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40 Amp MPPT Solar Charge Controller. Mppt solar system

40 Amp MPPT Solar Charge Controller. Mppt solar system

    MPPT Charge Controller Ultimate Guide

    The MPPT charge controller is a technology that has been specially designed to work with virtually all types of photovoltaic systems. Of course, it’s for the solar power system in which the module voltages are higher than the battery voltages.

    It’s an electronic system that assists the solar panel to produce all the energy that it is able to produce. On the other hand, it’s not mechanical tracking technology that physically moves modules toward the sun to convert more solar energy into electricity.

    An MPPT solar charge controller is a Smart electronic device that looks at the power output of the solar array that is feeding power into the charge controller and looks at the battery collection that needs to be charged and matches the voltage and current to utilize the maximum output of the solar array.

    What is MPPT Charge Controller?

    The MPPT charge controller refers to the “Maximum Power Point Tracking” solar charge controller, which is an evolution of the traditional solar panel charge controller.

    The MPPT solar charge controller detects the solar panel voltage and current in real time and constantly tracks the maximum power (P=UI). This ensures that the system always charges the battery with maximum power.

    What is Maximum Power Point Tracking?

    Maximum Power Point Tracking (MPPT) is an electronic system that allows the photovoltaic panel to produce more power by adjusting its operating state. The DC power generated by the solar panel can be efficiently stored in a battery.

    In remote areas and tourist resorts that are not connected to conventional power grids, it can meet residential and industrial power needs. It is environmentally friendly to produce and consume energy from a solar photovoltaic system.

    The MPPT charge controller detects the power generation of the solar panel in real time and tracks the highest voltage and current (VI) value, thus charging the battery with maximum power output. It coordinates the work of solar panels, batteries and loads and is the brain of the photovoltaic system.

    The output power changes accordingly because the solar collection by the panels is affected by sunlight and factors such as dust, pollution, rain, snow, and shade, etc. When the sunlight is strong and large controller is used.

    How MPPT charge controller works

    Generally, a DC/DC converter circuit completes the MPPT control. The photovoltaic cell array is connected to the load through a DC/DC circuit. The maximum power tracking device continuously detects the current-voltage variation of the photovoltaic array.

    It automatically adjusts the duty cycle of the PWM drive signal of the DC/DC converter in accordance with the variation.

    For linear circuits, the power supply has the maximum power output when the load resistance is equal to the internal resistance of the power supply.

    The photovoltaic cells and the circuits of the DC/DC converters are strongly affected by non-linearity. However, it can be considered as a linear circuit for a very short time.

    The maximum power output of the panel cell and the maximum power point of the photovoltaic array can be realized as long as the equivalent resistance of the DC-DC converter circuit is adjusted to be always equal to the internal resistance of the photovoltaic cell.

    How to Size MPPT Solar Charge Controller

    There are various types of MPPT solar charge controllers with the Rapid development of technology. We need to consider 2 aspects: the current of the solar panel and the voltage of the solar panel when choosing the right MPPT solar charge controller.

    Solar Panel Voltage

    We need to pay attention to the working voltage and short circuit voltage of the solar panels. The working voltage is usually 18V, 36V, and so on. If the working voltage is 18V, then the short circuit voltage of the solar panel should be 22V, similarly if the working voltage is 36V, then the short circuit voltage should be 42V. You need to choose the right controller according to the working voltage of the solar panels. As a rule, when you buy the solar panels, you will have all the parameters according to it.

    Solar Panel Current

    The size of the solar controller is often indicated by how much current the solar controller can handle (i.e. the maximum charging current). On the market, a solar charge controller will generally come in sizes of 10A, 20A, or 30A. There are also 50A, 60A controllers available for high power applications. Even larger, 80A solar charge controller and 100A solar charge controller are also common.

    In the selection of the controller, please be aware that the discharge current of the solar panel cannot exceed this value, otherwise the controller will be damaged.

    Therefore, if the solar panel current is 6A, we recommend choosing a 10A charge controller when selecting a controller. The input voltage of the solar panel of the MPPT solar charge controller is usually about 0~150V, and the input voltage of the PWM solar charge controller is usually 0~55V.

    As long as the voltage is below these values, it is easy to find the right MPPT solar power controller. In case of special requirements, if these input voltages are higher than the rated values, it’s also easy to find a solar charge controller manufacturer to order one. Zhcsolar just released a size calculator to choose the right ampere controller. check here.

    Which is better, PWM or MPPT?

    There is no doubt that your choice should be an MPPT controller rather than a PWM controller. The converting efficiency of the MPPT charging controller is 150% of the PWM one. Better quality, better conversion efficiency, better protection of your system and battery, in the long run, and the use of MPPT is also the trend, MPPT is more worth to implement. A comprehensive comparison guide is ready for review by zhcsolar expert.

    What is the best MPPT charge controller?

    The best MPPT solar controller is the one that is most suitable for your solar system and fits the requirement of your batteries or storage. You need to know all the details of your PV system, such as the input and output power, the maximum battery current, the nominal system voltage (12V, 24V, 36V, 48V, 60V, 100V, 150V, and 200V, etc.).

    When considering which MPPT controller to choose, please have a look at the MPPT controller calculation guide above. ZHCSolar has the best MPPT solar charge controller for sale of 2023. In order to choose the best 60 Amp MPPT solar charge controller, please refer to this guide.

    MPPT Charge Controller vs. PWM: Advantages

    To charge the battery, the solar panel output voltage must be higher than the battery input voltage. The output current will be close to zero if the output voltage of the solar panel is lower than the input voltage of the battery.

    In addition, the output power of the solar panel is not fixed, but will vary with various conditions such as the intensity of irradiation, the ambient temperature, and so on. It also depends on the level and ability of the designer whether the solar panel can work at the maximum value of the IV curve or not.

    The operating parameters of the traditional solar charge controller are set as they are. The parameter mode (constant voltage or constant current) is used as a base to transfer the solar panel energy to the battery and won’t change with the changes in the surrounding environment.

    The natural environment components such as sun radiation level, environment temperature and humidity are constantly changing.

    Therefore, the battery will be insufficiently charged by the solar panel energy generated and converted in a fixed way.

    On the other hand, when the weather is good and the sunlight is high, the solar power cannot be fully utilized and will be a waste of energy. We know that in a stand-alone photovoltaic solar system, the cost of solar panels and batteries is 80-90% of the total system budget. The controller is only 5-10%.

    A solar controller with a budget of 5% can optimize the system to its best performance if the design is reasonable.

    Practically, you can see the benefits of MPPT controller more clearly: in a system that uses a conventional PWM charge controller with 1000W solar panel capacity and it is replaced by an MPPT controller for the same load, the same battery, you only need to install 700W solar panels and it’s enough to meet the power demand of all the electrical equipment.

    According to the current market price of solar panels at 2 per watt, the cost of the solar panels in the system can be directly reduced to 650.

    In such cases, the savings can be greater in larger systems. This includes the cost of purchasing the panels, cables, and more.

    In addition, there are many types of amorphous silicon solar panels available on the market. The open-circuit voltage is high and the current is low for this type of panel.

    In practical applications, the traditional PWM controller, including the constant current controller, can convert the panel energy with low efficiency, which will cause the battery to be insufficiently charged, thus shortening the service life of the batteries.

    This also causes the solar energy generated by the system to be wasted. To improve the overall system performance, the maximum power point tracking controller can compensate for these practical shortcomings.

    Difference between MPPT Solar Controller and PWM Controller

    The main difference between MPPT controller and PWM controller is in three aspects.

    Charging method difference

    Because the PWM charge controller charges in a three-step charging mode, the charging method is different. MPPT is the maximum power tracking technology and the relative charging efficiency can be increased to about 30%.

    Charge voltage difference

    When an MPPT solar controller is used to charge a low voltage battery with a high voltage solar panel, the charging efficiency will have a big difference with the PWM charge controller under the same condition. The difference between the practical PWM controller and the MPPT controller will not be large if the voltage of the solar panels and the battery are the same, for example, both are 12V.

    Solar power difference

    If the solar power generation is small, it is better to have a PWM charge controller. If the power generation of the solar panel is large, the MPPT solar controller will be a better choice. Normally, the MPPT solar charge controller is more expensive than a PWM controller.

    If the power of the solar panel is small, the installation of the MPPT solar charge controller is a little bit of a waste of money.

    Features of MPPT Charge Controller

    MPPT solar charge controller is usually used in the off-grid solar power generation systems. The energy generated by solar panels is a very valuable resource as it is a clean type of energy.

    If a traditional PWM controller is used, the disadvantage is that the conversion rate is low and a lot of solar energy is wasted. By using a MPPT charge controller instead, the solar conversion rate can be greatly increased with minimal energy waste. The MPPT solar controller is obviously a better choice when the budget is rich.

    Highlights of MPPT Charge Controller

    High energy converting efficiency, up to 99

    Support all kinds of solar panels, such as mono-crystalline silicon solar panels, multi-crystalline silicon solar panels, amorphous silicon solar panels, etc;

    Rich load working mode: such as time control, pure light control, light control time control, manual, debug mode, long open mode.

    Good circuit protection functions, including PV reverse polarity protection, PV overcurrent protection, battery reverse polarity protection, battery overvoltage protection, battery overdischarge protection, load overcurrent protection, load short circuit protection, etc.

    Support serial communication functions (Wi-Fi, Bluetooth control and monitor devices).

    Support various battery types, such as lead acid, lithium iron phosphate, etc.

    Supports various battery voltages, like 12V, 24V, 36V, 48V, 110V, etc.

    MPPT Limiting Charge

    The system detects the battery voltage drop in low value can be charged when the initial charging stage starts. In order to convert and transfer the PV output power to the battery, the MPPT charge starts working. When the sunlight is strong, the output power of the PV array is greatly increased. The charging current reaches the threshold value.

    At this point, the MPPT charge stops and switches to the constant charge mode. Constant charge switches to MPPT charge when sunlight decreases.

    By this switching method, the battery is fully charged and the voltage rises to saturation voltage (Ur) and the battery enters constant charge.

    The solar energy can be fully utilized to charge the battery quickly and efficiently because the charging mode automatically switches between MPPT charging and constant charging.

    Constant Voltage Limiting Charge

    At this stage, the charge voltage is always saturated (Ur). The charge current gradually decreases due to the electrochemical reaction in the battery. When the charge current drops to approximately 0.01 C, the constant voltage charge is terminated and the float charge phase is entered. The charge current is also limited at this stage to protect the battery.

    Float charge

    The charge voltage (Uf) in floating charge is slightly lower than in constant charge. The main purpose of this charging mode is to compensate for the self-losing energy of the battery, since at this stage the battery is fully charged.

    Advantages of MPPT Solar Charge Controller

    When the MPPT charge controller is used, the charging efficiency can be improved by 30%, i.e. from the same solar panel power, the MPPT charge controller can generate 1.3 times more charging current than before, and the battery can be charged faster.

    How the MPPT Charge Controller Works: The MPPT charge controller tracks the maximum power point in the solar panel in real time, and the solar panel outputs maximum efficiency.

    The higher the voltage, the more power can be output by tracking the maximum power, thus improving charging efficiency.

    Theoretically, using the MPPT charge controller in the solar power system will increase the efficiency by 50% than the traditional ways. However, according to zhcsolar’s tests, the final efficiency can be increased by 20% to 30% due to the influence of environmental factors and energy losses.

    The Importance of MPPT Solar Charge Controller

    • When you look at many solar panels in the market and see their results, you’ll see that the range of voltages from low to high with variation under normal operating parameters. A usual solar panel is made to work in excess of 18 volts and storage batteries are made to a range of predefined voltage that is based on the structure of the battery and a lot is made to work at 12 volts.
    • It checks out the work or functions of a standard PV regulator. It tracks the battery charging and at the same time provides them the security from getting undercharged or overcharged. If you connect the regulator straight to the battery and then to the solar module, a high-quality MPPT solar charge controller works out and analyzes the voltage at which the module could generate the utmost power for its capability. The effectiveness and efficiency of most of the MPPT solar charge controllers are between 93% and 96%. This kind of solar charge controller is valuable in cold weather and on cloudy days when there’s almost no sunshine. This is the time when more power is needed to charge the battery in order to keep the SOC level
    • An MPPT solar charge controller could be a remarkable combination with a grid-tied solar module. Another remarkable benefit of the MPPT solar charge controller is that you save lots of time in the cable and wiring expenses that means where a smaller gauge cabling or wiring could be utilized.
    • While selecting an MPPT solar charge controller, you have to ensure that these essential features are on hand: Voltage and Current Regulation, Pulse Width Modulation or PWM control, current compensation load disconnection, temperature compensation as well as automatic load reconnection.
    • Electronic Security: Overcharging security, deep-discharging security, and reverse polarity protection from the module side as well as from the side of the battery. Reverse polarity security from the internal fuse, short circuit security as well as overvoltage security at module input. Also, you need to ensure that there’s open circuit security without battery, over temperature as well as overload security, and even battery overvoltage shutdown.

    MPPT Solar Charge Controller Negative Ground vs Postive Ground

    In simple words, all vehicles have a NEGATIVE ground system, so when choosing MPPT Solar Charge Controller for RV and Autos, remember to choose the Negative Grounding Charge Controller.

    Here I will explain why? As all vehicles use the battery as the storage of electric energy, all the input and output of electric energy must pass through the battery.

    Since the battery is direct current (DC), the positive and negative poles become equally important. This is the basic principle of negative ground.

    On the vehicle’s external works, the body of the vehicle is designed to use as the circuit of the negative pole. This means that the vehicle’s steel frame or chassis is directly connected to the negative side of the battery via the negative battery cable.

    MPPT Charge Controller Price

    The price of the MPPT solar charge controller is usually 3-5 times then the PWM controller which in the same size (amp).

    Generally, the price difference of the small amp is not as much as the big amps. The price difference between the MPPT controller and the PWM controller jumps after 30 amps size.

    MPPT charge controller price ranges from 70 to 1000 and is common in the market.

    An MPPT unit over 1000 is not unusual especially when it is a big unit. According to Comparison Shopping Engine – PriceGrabber, the most expensive 60A MPPT Solar Charge Controller is priced at 1,000.68 by the MidNite Solar Classic Lite 60A controller.

    In the long run, the MPPT charge controller has a higher return on investment, not matter for the home off-grid system or for commercial purposes. We strongly recommend taking an MPPT controller for your power system.


    In general, the MPPT charge controller tracks the maximum power point in the solar panel in real-time to maximize the effectiveness of the solar panel.

    The higher the voltage, the more power can be output through the maximum power tracking, thus improving the charging efficiency.

    In this sense, the MPPT solar charge and discharge controller is going to eventually replace the traditional PWM solar controller.

    Frequently Asked Questions:

    who makes the best mppt charge controller

    The most popular brands of controllers on the market are Renogy, Victron, EPever, ZHCSolar, SRNE, etc. From our experience, the most cost-effective products come from EPever and ZHCSolar.

    how mppt charge controller works

    The MPPT controller is able to detect the generation voltage of the solar panel in real time and track the maximum voltage and current value (VI) to enable the system to charge the battery with the maximum power output.

    how to marine mppt solar charge controller

    Marine mppt solar charge controllers are the controllers used in Marine and Boat solar systems, to size Marine controller is usually the same as the RV controllers. check the guide here.

    what can i power with my renogy rover 20 amp mppt solar charge controller

    Solar controllers should only be used in conjunction with solar panels and are not recommended for use with other energy inputs.

    how to wire solar panels to 24 volts to charge 12v batteries with mppt charge controller

    to wire the solar panels, charge controller, and solar batteries please check this wiring guide.

    what is the difference between charge controller and mppt

    The biggest difference between the mppt and PWM controllers is the way the energy is controlled. mppt uses a maximum power point tracking algorithm, while the PWM controller is Pulse Width Modulation, get more detail here.

    schneider conext xw 60-150 mppt charge controller why is discontinue

    to troubleshooting the solar charge controller, follow the instruction of the charge controller fix guide.

    which mppt charge controller is the best for 1050 watt solar aray

    to size the charge controller for 1050W solar array, please use this sizing tool, and usually, we recommend a 60 Amp MPPT Controller for 24V system.

    how to set up a mppt charge charge controller

    To successfully set up a solar controller, first you have to choose the right size, second you have to connect the controller correctly, and finally you have to configure the controller parameters.

    does renogy wanderer 20 amp mppt charge controller already know what kind of battery?

    Most mppt controllers correctly recognize the battery types and battery voltage and can automatically switch to the correct voltage mode, in some cases, it may need to be set manually.

    how many solar panels can i hook up to a aims power scc60mppt, 60 amp mppt solar charge controller

    according to the scc60mppt manual, you can hook up to 3400w solar panels to the charge controller.

    what is a mppt charge controller for wind turbine

    A turbine controller is a controller specifically designed to regulate the charging and discharging of the wind turbine and can often be mixed with a RV solar controller.

    what mppt charge controller do i need

    mppt solar controllers can be sorted by size, type of battery charge, application, and more. You need to be aware of these before going any further.

    how much more efficient is a pwm vs mppt charge controller

    Typically, MPPT is 30% more efficient than PWM. to better understand, check this comparison guide.

    mppt charge controller for 500 watt panel should be how many amp

    30 Amp MPPT Charge Controller is good for the 500 Watt Panel.

    pwm vs mppt charge controller how to spot

    To properly identify MPPT and PWM, read the product description first and then check the product directly. Usually MPPT is larger and more well-made, with a richer set-up interface and features.

    50 amp mppt solar charge controller how many watts

    the ZHCSolar 50a solar charge controller can handle 3500W solar panels at 48v mode.

    14000 watts needs what size mppt solar charge controller?

    to handle 14000 watts solar panels input, you will need 4 × 100 Amp mppt solar charge controller combination.

    mppt, solar, charge, controller

    what does pv mean in a mppt solar charge controller

    PV stands for Solar Photovoltaic, and you can simply understand it as solar arrays or solar panels.

    which mppt charge controller for 1kw

    60 Amp MPPT Charge controller is good to handle the 1KW Solar array input.

    what amp mppt charge controller for 200 watt solar panel

    20 Amp MPPT Charge controller is good enough for the 200 watt solar panel.

    which mppt charge controller should i use for deep cycle batteries

    there are a lot of charge controllers on the market support the deep cycle batteries, the zhcsolar 50A regulator is highly recommended.

    why does my mppt solar charge controller show charging but 0 amps

    to fix the controller not charge battery problem, check the troubleshooting guide here.

    what is floating mode on mppt charge controller

    Floating mode means the floating charge, is a charge process after the bulk charge to make the solar battery fully charged.

    what is the highest rated mppt charge controller

    A common maximum rated controller is 100 amp, and in larger solar power systems, multiple 100 amp mppt controllers can be stacked.

    why they mppt t30 is not a mppt charge controller

    There are very many fake mppt controllers on the market that are actually PWM controllers.

    what size mppt charge controller for 800 watt

    30A MPPT Charge Regulator will be a perfect option for the 800 Watt Solar panels.

    40 amp mppt solar charge controller how many watts

    A good 40 Amp MPPT Solar Charge Controller can handle 1040 Watts solar panels. EPever TracerBN 40A is one of the best on the market.

    where to buy tracer-bn series mppt solar charge controller

    tracer-bn series mppt solar charge controller can be bought from ZHCSolar Shop.

    what size mppt charge controller is needed for 200w

    for the 12V battery system, 20A MPPT Controller will be good, for the 24V Battery System. 10A MPPT Controller is a must.

    how many watts can a 40 amp 24 volt mppt charge controller handle?

    1040W, a 40 amp 24-volt mppt charge controller like EPever TracerBN can handle 1040 Watts at a 24V system.

    how can i tell if a charge controller is really mppt

    To properly identify MPPT and PWM, read the product description first and then check the product directly. Usually MPPT is larger and more well-made, with a richer set-up interface and features.

    why don’t my sunforce mppt wind charge controller put out dc?

    to trouble the mppt win charge controller put out no DC, please test the the whole system and the solar charge controller settings. or refering this guide.

    what do the numbers mean on a mppt charge controller

    the number is the rate ampers that the charge controller can handle. typically, 60A means the charge controller handle 60 amp current at the most.

    how to calculate mppt charge controller

    to calculate the size of the mppt charge controller, you can use this free size tool.

    285 watt 36 volt solar panel how big of a mppt charge controller will i need

    you need a 15Amp or 20Amp Charge controller to handle 285 Watt 36 Volt solar panel.

    how do i connect my mppt charge controller with my battery bank in my rv

    to right connect the mppt charge controller with battery bank in the RVs, you must follow this wiring guide.

    what are accumlated amps on mppt charge controller

    Accumulated Amp-Hour (Ah) is a unit of measurement that describes accumulated electric charge over time.

    what is range of amper for mppt solar charge controller

    typically, MPPT Charge Controller are Range from 20A to 100A on the market, 30A, 40A, 60A, 80A are the most common models.

    mppt charge controller draws power from battery at night?

    No, the mppt charge controller will not draw any power from the battery as the solar controller has not power consumption.

    Amp MPPT Solar Charge Controller

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    • Automatically detects 12V or 24V DC system voltages.
    • Compatible with various deep cycle battery options: Sealed, Gel, Flooded, and Lithium.
    • Innovative MPPT technology with high tracking efficiency up to 99% and peak conversion efficiency of 98%.
    • Electronic protection against reverse polarity, overcharging, over-discharging, overload, short-circuiting, and reverse current.
    • LCD screen and multiple LED indicators for displaying system operation information, customizable parameters, and error codes.
    • Features diverse load control; also capable of charging over-discharged lithium batteries.
    • Die-cast aluminum design allows for efficient heat dissipation.
    • RS232 port to communicate with BT-1 Bluetooth module.


    Rated Battery Current: 40A
    Rated Load Current: 20A
    Max. PV Input Short Current: 50A
    Max. Battery Voltage: 32V
    Max Solar Input Voltage: 100VDC
    Charge circuit voltage drop: ≤ 0.26V
    Discharge Circuit Voltage drop: ≤ 0.15V
    Working Temperature: -35°C to 45°C
    Max Terminal Size: 8AWG
    Rated Load Current: 10% to 90% NC
    Overall Dimension: 9.37 x 6.81 x 2.85 in
    Net Weight: 4.41 lb

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    MPPT Charge Controllers

    The MPPT charge controller is the most efficient type of charge controllers on the market. Adding it to your solar panel system helps you to keep your battery safe and maximizes the efficiency of its charging process.

    What does a charge controller do?

    A charge controller is a crucial part of every solar panel system with a battery. Both a PWM (pulse width modulation) or MPPT (maximum power point tracking) controllers:

    • protect the battery from high voltage of solar panels — PWM and MPPT controllers do it in different ways.
    • block the usage of a deeply discharged battery
    • don’t allow the battery to be overcharged
    • prevent reverse current: at night electricity can flow from an energy storage back to panels, which can potentially be dangerous.

    What is special about MPPT controllers?

    Unlike a PWM controller, an MPPT charge controller doesn’t simply limit the voltage of panels for a battery, but rather converts it into current at high frequency. This speeds up the charging process and allows you to use your solar array at its full power. Basically, the solar charge controller MPPT technology allows to find and maintain the “sweet spot” where voltage and current are set to maximize the energy production of panels. As a result this controller makes use of 90-95% of energy coming from solar panels.

    The higher the voltage, the better it is with an MPPT charge controller. In winter when it’s cold and sunny solar panels tend to reach their peak voltage. This is why this type of regulators becomes especially good during cold months — it’s 40% more efficient, compared to a PWM regulator.

    MPPT controllers are more internally complex than PWM controllers which results in slightly shorter lifespan — from 10 to 15 years on average. The downside of a MPPT controller is its cost — 5-10 times higher than of a PWM regulator.

    How to choose a charge controller for a solar panel system?

    An MPPT solar charge controller fits almost any solar panel system, whereas a PWM controller is more likely to be used only in situations where the voltage of panels is slightly higher than the one of a battery. But even in solar systems where both PWM and MPPT controllers can be used, an MPPT solar charger is 20% more efficient.

    Look for two main characteristics in an MPPT charge controller: maximum amps size and maximum voltage.

    • Figuring out minimum amps size can be done like this: take the combined power of your solar array and divide it by the voltage of your battery. For example, if the power of your array is 900 watts and you are using a 24 volt battery, then the charge controller should be bigger than 900 W / 24 V = 37.5 A.
    • To determine the voltage of your array, sum the VOCs (open circuit voltage) of every panel in the array. During cold and sunny days panels can reach their peak voltage (Vpp). To make sure that it won’t hurt the controller, add 5V to the VOC of every panel. For example, if you have two 400W solar panels in an array, the VOC of each panel is 48.1V. The maximum voltage of a controller here must be bigger than (48.1V 5V) 2 = 106.2V

    To adjust the voltage and amperage of your solar panel system, you can play around with the connection of panels. Remember, that wiring panels in series gives you combined voltage and allows you to keep the current low. Connecting panels in parallel gives you combined currents, but voltage stays the same. Combination of two types of connection allows to adjust the system to the parameters of a charge controller.

    Why buy from us

    • Our distribution centers are located on both east and west coasts of the USA: California, Washington, Colorado, Texas, Florida, New Jersey, and Missouri.
    • We guarantee the authenticity of all the products we sell.
    • We process all orders within 24 hours and ship them within 48 hours.
    • Delivery normally takes between 4-7 business days.
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    We have a wide selection of solar charge controllers in stock. Call us, and our A1 SolarStore experts will answer all of your inquiries, help you choose the right product, and complete your order.

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    MPPT Solar Charge Controller: Features, Application and Price

    Do you know what an MPPT solar charge controller is? If not, don’t worry! We will give you insights into this concept.

    But before a briefing on that, let’s first understand what a solar charge controller is.

    Well, a solar charge controller is a device that keeps the battery from overcharging and provides limited power to charge up the appliances.

    The PV modules absorb power from the sunlight. This power is generally intense, and if not kept under control and sent directly to the home appliances, it might damage them.

    So, the solar charge controllers ensure the power intensity is controlled before distributing it to the loads.

    When the MPPT algorithm is embedded in a solar charge controller, it becomes an MPPT solar charge controller.

    Let’s now understand what an MPPT charge controller is in detail.

    What Is An MPPT Solar Charge Controller?

    The MPPT solar charge controller tracks the maximum power point available. It converts the energy from the PV modules to battery voltage.

    An interesting fact about MPPT is that it is not a device but an algorithm/software. It is applied to the controller.

    The current and the voltage come together at the maximum power point to generate maximum power at a specified time.

    Moving on, the MPPT charge controller tracks this power and optimises the voltage between the batteries and the solar panels. This controller is used in off-grid systems that run without the grid mechanism.

    Working of an MPPT Solar Charge Controller

    Now let’s understand how the MPPT solar charge controller works in more detail.

    When sun rays fall on the solar panels, the MPPT solar controller takes the maximum energy and operates them at the most efficient voltage.

    • – First, when the tracker receives the energy from the PV module, it checks the output.
    • – Then, it cross-checks the outcome with the battery voltage.
    • – After that, it determines the best power the solar panels can generate to charge the battery.
    • – After this analysis, the tracker transforms the energy to the best voltage to send maximum energy into the battery.
    • – Finally, the battery sends the power to the household appliances to charge them up.

    Features of an MPPT Solar Charge Controller

    When it comes to MPPT solar charge controllers, they have many benefits. Let’s have a look at each.

    • – The MPPT charge controller corrects the solar cell’s voltage and current variation.
    • – It ensures that maximum energy is drawn from the solar panels.
    • – This controller can be used in wind-power turbines and small water turbines.
    • – It eases the system’s complex operation.

    Price Comparison of Different MPPT Solar Charge Controllers

    No matter which MPPT algo you use, the MPPT solar charge controller price is going to be more expensive than the other solar charge controllers. The reason is that the controller operates alone without the help of the grid.

    The MPPT solar charge controller is mainly used in rural areas and, as you might have already guessed, in off-grid systems.

    Since the alternating current is not required, the controller can power up the pumps that require direct current.

    Even for charging the pumps, the controller has to work alone. It has heavy electronic units like choke units and mini transformers that come at a costly price range.

    Although the rate varies on multiple aspects like brand, you can expect it to be up to 60-70% more expensive than the normal inverters.

    PWM vs MPPT Charge Controller

    Now let’s understand the main distinctions between PWM (pulse width modulation) and MPPT (maximum power point) charge controllers.

    Before you ask, PWM is an obsolete technology that’s rarely used nowadays.

    • – PWM solar charge controllers were popular in the 90s. MPPT solar charge controllers are popular now.
    • – PWM charge controllers used to work efficiently on small solar power systems, whereas MPPT works on large ones.
    • – The conversion efficiency rate of PWM used to be no more than 75%, whereas, for MPPT, it is 95%.
    • – Customer charging profiles and Bluetooth features are present only in MPPT solar chargers. These features weren’t a part of PWM solar charge controllers.
    • – MPPT has better build quality than PWM had.

    How Does MPPT Work on a System of Batteries?

    The voltage and the current work in the opposite manner. In other words, if the voltage increases, the current decreases, and if the current increases, the voltage decreases.

    The MPPT charge controller adds resistance to the current, adjusts the voltage to the current ratio, and increases the voltage. With the MPPT solar charge controller, you can expect to increase the current up to 25-30%.

    An interesting fact to remember is that the 80% discharged battery will get powered up faster than the 50% removed battery.

    This is because as the battery reduces, the voltage also drops. So, the voltage that a 50% discharged battery can provide is much less than that of an 80% battery.

    On a broader scale, MPPT has more connection with the solar panels rather than the batteries. For batteries, there’s a battery management system.

    When Are MPPT Charge Controllers Necessary?

    An MPPT solar charge controller is highly efficient; hence, expensive.

    Here’s when you can decide to buy them.

    • – MPPT works better in the cold season. During the cold season, the voltage increases, and the device takes the excess voltage.
    • – If high efficiency is your concern, you should consider purchasing the MPPT charge controllers.


    Maximum Power Point Tracking, also known as MPPT, is a more recent and efficient technology. Today, more and more solar panels use MPPT charge controllers to increase current and voltage.

    With the MPPT solar charge controller, the solar power flows with a slightly higher current and voltage, and the controller lowers the voltage to ensure that the battery is charged properly.

    MPPT generates a highly efficient solar charger by minimising losses and increasing the incoming current.


    Q. Explain the MPPT charge controller. What is it?

    MPPT charge controller guarantees that the loads receive the maximum amount of usable current (by rapidly charging the battery).

    Maximum power point (MPP) can be considered the optimal voltage at which the loads receive the most power while experiencing the lowest losses.

    Q. What is a maximum power point (MPP)?

    The maximum power point (MPP) represents the location on an I-V curve where a solar photovoltaic device produces the most output or the location where the product of current (I) and voltage (V) is greatest.

    Q. What kind of weather is perfect for an MPPT charge controller?

    MPPT controllers perform better than PWM controllers in cold weather. The voltage rises when the temperature falls, and an MPPT solar charge controller can collect the extra voltage.

    Ultimate Guide to MPPT VS. PWM

    Both MPPT and PWM charge controllers are frequently employed when using solar energy to recharge batteries. The terms MPPT and PWM may be familiar to you if you’re interested in solar power for the off-grid building, camping, or home power backup.

    While managing off-grid PV systems, adequate battery charging is a crucial factor to consider. Hence, it is much more critical than you might realize to include the proper solar charge controller in your system. On this page, you will discover what MPPT and PWM are, MPPT vs. PWM, and how to select the best solar charge controller.

    What Are The MPPT and PWM Controller

    By controlling the amount and rate of charge to your batteries, the solar charge controller, located between the energy source and storage, avoids overcharging batteries. Additionally, they stop battery drain by turning off the device if the amount of power stored drops below 50% of its maximum level and charge the batteries at the proper voltage. The batteries’ life and health are preserved as a result.

    MPPT Solar Charge Controller

    Maximum Power Point Tracker controllers are typically more expensive than PWM controllers because they are more efficient and complicated. The electronics enable MPPT controllers to control the solar panel’s Maximum Power Voltage (Vmp). Our Tracer 3210An series has a reported efficiency of 98% thanks to this, which offers 5-25% greater efficiency than the PWM.

    Also, using an MPPT charge controller when your PV arrays are more significant is more economical because they often operate at a greater voltage than your batteries. It allows the controller to capture more solar energy by turning all the excess voltage into the current.

    PWM Solar Charge Controller

    Compared to the MPPT, a PWM charge controller has a simpler charging function. Due to the charging function’s simplification in design, an average PWM charge controller will only have 75–80% efficiency, which means it will not convert all of the solar panel’s higher voltage potential into the current.

    Pulse Width Modulation is abbreviated as PWM. PWM charge management devices can be considered electrical switches between batteries, which can be turned on and off rapidly. As a result, the batteries can be charged at the specified voltage. A gradual reduction in charge current will occur as the batteries charge.

    MPPT VS. PWM: What Differences

    Everyone would use MPPT controllers if maximizing charging capacity were the only consideration when choosing a solar controller. Nonetheless, the two technologies are distinct, and each has unique benefits. Concerning MPPT vs. PWM, the choice is based on the site’s characteristics, the components of the system, the size of the array, and the cost.

    MPPT VS. PWM: Appearance

    Both MPPT and PWM controllers include electrical connectors for connecting the batteries and solar panels, and they look very similar. Both also have LED lights to check how things are working. The size and weight of MPPT charge controllers are greater. Because they don’t require large DC-DC convertor coils, PWM charge controllers are typically smaller.

    MPPT VS. PWM: Working Principle

    The technology in the MPPT controller is more advanced and effective. The MPPT charge controller converts high to low-voltage power using a DC-to-DC converter. To always supply the batteries with the maximum power point, it monitors the maximum power point that the solar array can produce and balances voltage and current by the P = V x I equation. The voltage will equal the battery bank, as shown in the image below, but the current will rise.

    • The panel’s open circuit (Voc) voltage must be lower than the allowed value.
    • For the controller to kick in, the VOC must be higher than the start voltage.
    • The maximum panel short circuit current (Isc) has to fall within the predetermined range.
    • The maximum array wattage. some controllers let this be oversized, for instance, the Redarc Manager 30 can have up to 520W attached.

    The PWM controller acts as an electrical switch to connect the batteries and the solar panel directly. When the battery has to be charged, the switch can open and close at predetermined intervals. When the switch is completed, the PV array’s voltage is forced to match the battery’s voltage. Thus, utilizing a PWM controller will result in a significantly reduced power output. The voltage is concentrated in the diagram below to match the battery voltage, but the current remains unchanged. This is due to the PWM’s need for current adjustment.

    • When the charger mode is set to bulk charge, the switch is ON.
    • To maintain the battery voltage at the absorption voltage, the switch is flicked ON and OFF as necessary.
    • After absorption is complete and the battery voltage reaches the float voltage, the switch is turned off.
    • To maintain the battery voltage at the float voltage, the switch is once more flicked ON and OFF as necessary.

    MPPT VS. PWM: Temperature

    The PV system gets hotter when the sun shines on the solar panel. The open-circuit and maximum power point voltage decrease when a solar-heated panel warms up, but the current stays constant.

    An MPPT controller may extract more power from a solar array under colder temperatures than a PWM model can since the operating voltage at maximum power point at Standard Testing Conditions (25C°) is approximately 20V, and the battery voltage is about 13.5V. In chilly temperatures, an MPPT controller can generate up to 20–25% more than a PWM controller.

    A PWM controller, in contrast, is unable to change either the voltage or the current because the pulse width modulation technology meets the low battery voltage and the corresponding current in the I-V curve.

    MPPT VS. PWM: Costs

    PWM charge controllers cost little money. Several inexpensive PWMs are available online for 15–25. However, when purchasing one, caveat emptor is unquestionably in effect. Better ones start at roughly 40 to 50. Yet, the price of the more effective MPPT charge controllers can range from 80 to 500, depending on the voltage and current (A) rating. The cost will play a significant role in your choice.

    MPPT VS. PWM: Shading of Panels

    The P-V curve has just one maximum power point (MPP) when a solar array runs with evenly distributed solar radiation over its surface. Trees, clouds, or other objects may block some sun rays outdoors. The MPPT controllers can track the several maximum power points that the partial shade produces and set the highest MPP as the operation point. Still, the fundamental operation of a PWM cannot manage this scenario.

    MPPT VS. PWM: PV or Battery Voltage

    With both varieties of charge controllers, for the battery to charge, the PV voltage must be higher than the battery voltage. Regardless of the PV voltage and battery voltage differences, MPPT charge controllers perform effectively. For instance, with an MPPT, a 36V solar array may effectively charge a 12V battery.

    When the solar panel voltage, or incoming PV voltage, is near the battery voltage, PWM charge controllers perform at their best. With multiple PWMs, a 12V solar array and 12V battery provide the optimum configuration. A PWM charge controller will be less effective, with a more significant discrepancy between PV and battery voltage.

    MPPT VS. PWM: Series vs Parallel Connections

    But series wiring isn’t always the best choice. For instance, parallel wiring is functional when the panels are frequently exposed to various lighting conditions. You can connect more solar panels in series with MPPTs because they nearly invariably have larger PV voltage limits than PWMs. For instance, 100 volts is a typical PV voltage limit for MPPTs. As the open circuit voltage (Voc) of many common 12V 100W solar panels is roughly 22V, you could series-connect up to 4 without exceeding this limit.

    You must typically connect many solar panels in parallel when connecting them to a PWM. This is because many PWMs only support one or two 12V solar panels connected in series due to low PV voltage constraints (e.g., 25V or 50V).

    MPPT VS. PWM: Pros Cons

    The functions of MPPT and PWM charge controllers in a solar power system are identical. For your convenience, we create a list of MPPT vs. PWM pros and cons.

    Solar Charge Controller

    Maximum Power voltage Tracking up to 99% AIP Conversion rate.

    Multi-charging maintains the battery’s health.

    Available for purchase in a sizeable off-grid power system.

    Available for 100 Amp solar systems.

    Provide flexibility when system expansion is necessary.

    Costly Pricing (usually cost twice of a PWM Charge Controller).

    Larger than a PWM regulator in size.

    PWM controller uses sophisticated and tested methods.

    PWM controller has a simple structure, and the price is lower.

    Smaller-scale deployments are simple.

    The battery bank voltage must equal the input voltage.

    Less scalability for system growth.

    Inability to handle higher voltages.

    How to Choose Your Solar Charge Controller

    There you have it—a feature-by-feature comparison of MPPT vs. PWM. The PWM charger still has room, but the MPPT charge controller is better than the PWM charge controller.

    • MPPT Charge Controller:The best option for business owners looking for a controller that can handle difficult jobs (Home Power Supply, RV Solar Power, Boat, Hybrid Solar Power, and off-grid power station). Due to its powerful capabilities, it can help you save money by reducing other expenses and gaining a lot of power.
    • PWM Charge Controller:It works best for small off-grid power applications with lots of money and little need for additional functionality. The PWM controller is the best option if you only need a simple, affordable charge controller for a modest lighting system that doesn’t aim to satisfy the expectations of others.

    Why Choose MPPT Over PWM

    There are numerous benefits to selecting an MPPT solar charge controller as your perfect PV system component.

    • Energy:Depending on the climate, MPPT controllers boost the energy harvest from solar arrays by 5 to 30% compared to PWM controllers by operating array voltages above the battery voltage.
    • Fewer Module Restrictions:Because MPPT controllers run arrays at voltages higher than battery voltage, a more comprehensive range of solar modules and array designs can be employed. They can also accommodate systems with smaller wire diameters.
    • Solar Arrays:Unlike PWM controllers, MPPT controllers may support bigger arrays that would otherwise go above the charge controller’s maximum operational power restrictions. The controller achieves this by restricting the array’s current consumption when solar energy production is at its highest, often in the middle of the day.

    Jackery with Best MPPT Solar Charge Controller

    Jackery is a solar generator pioneer and top-selling brand recognized by over 100 authorized organizations worldwide. The Jackery Portable Power Station enables efficient solar charging with a built-in MPPT controller. The multi-stage charging procedure of an MPPT charge controller allows it to transition between charge methods depending on the PV condition automatically. The Jackery solar panels transform sun energy into electrical power, which is then stored in portable power stations for later use. With sizable capacities and high operating leverage, the Explorer series satisfy your massive power use for all purposes that you will encounter.

    There are over 12 Jackery portable power stations, which range in dimensions and capacities. The Explorer 2000 Pro. Explorer 1500 Pro. Explorer 1500. Explorer 1000 Pro. and Explorer 1000 deliver enormous charging capacity powering all your required appliances, including TV, blenders, coffee maker, mini cooler, and more. They are equipped with an AC outlet, a DC carport, and USB charging connections so that you can use them for long-term camping trips, off-grid living. and emergency power supplies for your house. The portable power stations are compatible with Jackery solar panels. Also, the stations support pass-through charging, which allows you to charge your power station, with essential devices still plugged in, enabling you to simply and rapidly charge on the go.

    Charge Controller

    mppt, solar, charge, controller

    Jackery Explorer 2000 Pro

    3AC Outlets, 2USB-A Quick Charge 3.0, 2USB-C PD 100W, 1Car Outlet

    Light(13W) 100H, TV(60W) 22H, Cooler(21W) 70H, Heating Blanket(40W) 68H, Coffee Maker(1000W) 2.2H, Electric Stove(1150W) 90Min, Mini Cooler(90W) 15H, Electric Grill(1600W) 1.1H

    Jackery Explorer 1500 Pro

    31800W AC Charging Ports, 2USB-C Charging Ports, 1 Car Charger

    Ice Shaver(700W) 1.7H, Mini Fridge(90W) 10.5H, Coffee Maker(1120W) 1.3H, Bluetooth Speaker(10W) 88H, Drone(90W) 35Times, Light(5W) 115H

    Jackery Explorer 1000 Pro

    2100W PD Ports, 31000W AC Ports, 2USB-A Ports, 2USB-C Ports, 1DC Carport

    Light(13W) 60H, Cooler(21W) 34H, Heating Blanket(40W) 35H, Coffee Maker(1000W) 4H, Electric Stove(1150W) 40Min, CPAP(10W) 80Times, Tower Fan(45W) 17H

    Meanwhile, the Explorer 500. Explorer 300. Explorer 240 are affordable, lightweight, portable power stations with USB Type-C, USB-A, and an AC outlet, so they can power your iPhone, laptop, and lights while camping or working from home. The Jackery Explorer series has a solid handle for easy carrying. It is simple to use wherever you go due to the push-button operation. The Jackery Explorer series contains a built-in MPPT controller for maximum eco-friendly solar recharging efficiency with the SolarSaga solar panel. You can also recharge the Explorers with a wall outlet, car outlet, and generator.

    mppt, solar, charge, controller

    Charge Controller

    1AC Outlet (500W, 1000W Peak), 3USB-A Ports, 2DC Ports, and 1Carport

    Light(5W) 45H, Phone(iPhone) 53Charges, Laptop(Mac) 4.5Charges, Camera(5W) 54Charges, TV(60W) 5H, Blender(50W) 7H, Mini Cooler(60W) 9H

    2AC Outputs, 60W PD USB-C, QC3.0 USB-A, USB Port. 12V carport

    Light(5W) 24H, Phone(iPhone) 30Charges, Laptop(Mac) 4Charges, Camera(5W) 54Charges, TV(60W) 4.5H, Drone(60W) 5.5Times, Fan(5W) 15H, Mini Cooler(60W) 4H

    1AC Outlet (110V 200W, 400W Peak), 2USB-A Ports, and 1DC Carport

    Light(5W) 21H, Phone(iPhone) 24Charges, Laptop(Mac) 3.5Charges, Camera(5W) 11Charges, TV(60W) 3H, Drone(60W) 4Times, Fan(5W) 15H, Electric Blanket(55W) 4H


    The following are the frequently asked questions about the MPPT vs PWM:

    Why is MPPT better than PWM?

    The MPPT controller is more worthwhile to purchase than the PMW controller in terms of quality, additional features, investment-output ratio, and various other variables. Several MPPT controllers have Bluetooth remote controls attached, allowing users to read and adjust the controller from a distance.

    For solar charge controller, which one is better?

    No matter how they operate PWM or MPPT, the goal is to control the current flowing from the energy source (a solar array) to the battery to avoid the battery from being overcharged. Whether you choose MPPT or PWM, select a charger with a well-known brand, superior quality, and numerous positive reviews. Jackery is a perfect choice!

    Is the MPPT controller worth it for a 12v panel system?

    For systems using 12-volt panels, an MPPT controller is a wise choice. MPPT offers many advantages, including improved energy transfer efficiency compared to PWM charge controllers. Alternatively, you can select a portable solar generator that combines solar panels with power sources; in terms of conversion efficiency and quality, the Jackery could be the best.

    Final Thoughts

    In conclusion, check a solar charge controller’s operations, the conditions, the functions you would require, and your budget before selecting one for yourself. This page compares MPPT vs. PWM to help you decide which type of charge controller you need. Before buying your charge controller, make sure to take the aspects above into account. Also, Jackery helps to build your solar system with the best MPPT charge controllers in its portable power stations.

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