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Best Solar Chargers. Qisa solar charger

Best Solar Chargers. Qisa solar charger

    Best Solar Chargers

    Advancements in solar technology have created a platform for the growth of numerous gadgets; the solar charger is one of them.

    Solar chargers allow you to charge your smartphone or other devices using the power of the sun, whenever and wherever you are.

    Read on for our expert reviews of the best solar chargers available. Check the latest to ensure you get a great deal!

    • 1 Our Top Picks
    • 2 7 Best Solar Chargers
    • 2.1 1. BigBlue 3 USB Ports 28W Solar Charger
    • 2.1.1 Features
    • 2.2.1 Features
    • 2.3.1 Features
    • 2.4.1 Features
    • 2.5.1 Features
    • 2.6.1 Features
    • 2.7.1 Features
    • 3.1 What Is a Solar Charger?
    • 3.2 How Does a Solar Charger Work?
    • 3.3 What Devices Can You Charge with a Solar Charger?
    • 3.4 What Are the Different Types of Solar Chargers?
    • 3.4.1 Direct Solar Chargers
    • 3.4.2 Power Bank Solar Chargers
    • 3.5.1 Eco Friendly
    • 3.5.2 Economical
    • 3.5.3 Efficiency
    • 3.6.1 Design
    • 3.6.2 Quick Charging
    • 3.6.3 Battery Capacity
    • 3.6.4 Power Output
    • 3.6.5 Portability
    • 3.6.6 Compatibility
    • 3.6.7 Solar Panel Surface Area
    • 3.6.8 Multiple USB Ports
    • 3.6.9 Indicators
    • 3.6.10 Durability
    • 3.6.11 Weather Proof
    • 3.6.12 Warranty

    Our Top Picks

    BigBlue 3 USB Ports 28W Solar Charger

    Anker 24W 3-Port USB Portable Solar Charger

    QiSa Solar Charger

    X-DRAGON Portable Solar Charger

    Foxelli Triple USB Solar Charger

    Nekteck 28W Foldable Portable Solar Charger

    CHOETECH 19W Solar Charger

    Best Solar Chargers

    BigBlue 3 USB Ports 28W Solar Charger

    The BigBlue 28W Solar Charger is a fascinating source of power for those who want to hook multiple devices into one unit without hesitation. It offers streamlined power, a high-grade build, and a set of USB ports perfect for versatile use.


    Triple USB Ports

    Most solar chargers come with dual USB ports, but this offers a third USB port for added versatility. This is essential for those who have a long list of devices that need to be charged simultaneously without having to worry about power drops and/or other similar charging concerns.

    Foldable Panels

    The foldable panels are perfect as most people will be on the go when they’re using the solar charger. This solar charger can be put away in a matter of seconds by folding the panels. This makes the device compact and easy to put away into any modern bag.

    Wide Compatibility

    It works well with all types of USB-powered devices, including smartphones, tablets, and/or anything else connected with a USB cable. This is ideal for different kinds of devices that need to be charged at the same time

    Short Circuit Protection

    There is built-in short circuit protection for users to rely on. This is designed to make sure devices don’t get overpowered and/or blow out due to the solar charger malfunctioning. There is a proper safeguard in place to make sure that doesn’t occur.

    • The safety standards set up with this solar charger are impressive and perfect for the outdoors
    • It is easy to store away due to the foldable engineering
    • The three USB ports provide tremendous flexibility
    • It works well with all types of USB-powered devices

    Anker 24W 3-Port USB Portable Solar Charger

    The Anker 24W Portable Solar Charger is all about efficiency, quality, and attention to detail. It is crafted by one of the market leaders in these types of products. The solar charger is fully compatible with a wide array of devices and provides refined power as soon as it is required.


    Built With Thin-Film Solar Material

    It comes equipped with a thin-film solar material that is perfect when it comes to maximizing solar energy output. The energy is used for converting into usable power, and it happens in a matter of minutes. This simple setup is all about the material used and is integrated into the solar charger’s overall design.

    Triple USB Ports

    It offers three USB ports, which is ideal for those who are not just carrying one type of device around with the solar charger. Whether it is a smartphone, tablet, or any other device, three viable USB ports can be used to streamline power.

    Built-In Stand

    The panels are angled in a way that allows the solution to be stood up. This provides added versatility and control in terms of how the solar charger is put to use.

    Foldable Panels

    The foldable panels are all about craftsmanship and understanding what the average user requires. These panels are easy to use and make the device as compact as it needs to be for regular traveling.

    • The stand is remarkably sturdy and works well on all types of surfaces
    • The foldable panels make it easy to put away in a bag
    • The solar material is refined and perfect for extended use and maximum solar conversion
    • The USB ports provide exceptional flexibility for modern users

    QiSa Solar Charger

    The QiSa Solar Charger is an optimal solution engineered to offer a comprehensive list of features. It delivers streamlined power, easy-to-use options, and makes sure the setup process is a breeze. It is a modern-day solution for those who want refined energy at the snap of a finger.


    30 Watts of Power

    It provides 30 watts of power for those who want to get streamlined power to their devices as soon as they are connected to the solar charger. This has been designed to optimize that part of the process while retaining enough power to make it worthwhile over time.

    Dual USB Ports

    It comes with two USB ports and a DC port. This makes it perfect for users who want to connect multiple devices to the charger simultaneously without compromising on the charging power. This takes seconds to set up and works well.

    Foldable Panels

    The panels fold, making them perfect for storage. When it is time to put away the charger, it is a lot easier to do so with the panels designed in this manner. They do not get in the way of how the solution is charged and/or stored away.

    Optimized Conversion

    It has a 26% conversion on solar energy, making it one of the premier options in the industry for energy conversion. This is essential when it comes to utilizing the solar charger daily.

    • The 26% conversion offers streamlined energy for all solar energy sourced through the panels
    • The foldable panels make it much easier to store the charger while traveling
    • It has a robust build that makes it ideal for different conditions
    • The ports are perfect and easy to access

    X-DRAGON Portable Solar Charger

    The X-DRAGON Solar Charger is all about efficiency, performance, and durability built on the shoulders of modern-day craftsmanship. This charger provides refined energy as soon as it’s required while working with multiple ports at the same time. It is a top-tier product focused on maximizing solar energy for maximum output.


    SolarIQ Technology

    This solution by X-DRAGON has been tailored to meet modern solar requirements. This includes the built-in SolarIQ technology focused on optimizing how solar energy is handled and how quickly it is converted once it goes through the panel. This leads to faster access to high-grade natural energy.

    Waterproof Design

    The outer shell of the solar charger is not only compact but also waterproof. It is battle-tested when it comes to inclement weather and can handle moisture thrown it’s way. This makes it ideal for those who spend a lot of time outdoors with the new solar charger.

    Foldable Panel

    It is designed with a foldable design to ensure the panels don’t make it impossible to store away once a device has been charged. Instead, this can be stored away in seconds after the charger is folded into a compact bundle.

    Dual USB Power

    Since it offers dual ports, this allows users to connect multiple devices to the charger simultaneously. This increases efficiency and ensures the solar charger works well once set up.

    • The foldable panel makes it easier to hold up and store away when necessary
    • The SolarIQ technology offers a more consistent source of energy on the go
    • The waterproof design is well-made and perfect for inclement conditions
    • The dual USB setup makes it much easier to use for families

    Foxelli Triple USB Solar Charger

    The Foxelli Triple USB Solar Charger is designed to offer a portable, easy-going solution for charging different types of devices. It’s lightweight, well-built, and can work in an assortment of situations without breaking down or creating issues.


    21 Watts of Power

    The power you are going to get will matter, and it starts with the conversion of solar energy. It can provide 21 watts of power without fail to ensure all devices are charged as they need to be.

    Up to 3 Devices

    Whether it is a phone or any other USB-powered device, this power bank can handle the load. This is ideal for those who will be connecting multiple devices at the same time and want them to be charged properly. This power bank can handle those devices without missing a beat.

    Made of Industry-Grade PET Polymer

    It is the external build that stands out when it comes to PET polymer and how it functions. The attention to detail regarding the build allows it to do well in outdoor conditions without breaking down and/or losing energy. The polymer is soft to the touch and perfect when put to the test.

    24% Conversion Rate

    The conversion rate is essential with any solar power bank. With this solution, users get up to 24% conversion, which is impressive when it comes to overall efficiency. This will continue to do well in all types of situations without losing energy or quality in terms of overall performance.

    • Offers efficient charging with continuous uptime
    • Offers complete compatibility with all types of USB devices
    • Easy to carry around due to its lightweight design
    • Works well whether it’s used in wet conditions or dry

    Nekteck 28W Foldable Portable Solar Charger

    The Nekteck 28W Solar Charger is a highly reputable solution for those wanting to tap into natural energy with state-of-the-art panels. This is a competent, user-friendly design that’s easy on the eyes and continues to work well for extended periods without breaking down or creating new issues.


    Smart IC Chip Technology

    The foundation of this solar charger is built on the shoulders of the Smart IC Chip Technology. This technology allows solar energy to be effectively converted at a high rate into usable energy. This makes it an ideal fit for those hiking or camping outdoors without access to a traditional power outlet.

    For those looking to charge multiple devices simultaneously, this portable solar charger makes it look easy. The dual ports are ideally spaced out and allow both devices to be charged simultaneously without missing a beat.

    Voltage Stabilization

    Nekteck has taken the time to craft a built-in safety feature in the form of voltage stabilization. The core premise of this setup is to make sure the charger doesn’t overcharge as the energy runs through it.

    Foldable Panels

    For those always looking to keep the portable solar charger in their bag, it is easy to do so with this model. It takes seconds to fold the panels and put away the solar charger without having to think twice.

    • The safety mechanisms are excellent and protect devices from overcharging
    • The dual USB ports are robust and perfect for all types of modern devices
    • The built-in technology offers great converted energy for a charger this size
    • It is easy to store away due to the foldable panels

    CHOETECH 19W Solar Charger

    The CHOETECH 19W Solar Charger is a comprehensive, high-powered option for those who want to take advantage of solar energy as best as possible. This is a refined solution built with industry-grade materials and allows on-the-go charging for those who need it.


    Dual USB Ports

    The solar power bank offers dual USB ports making it easier than ever before to charge multiple devices. This is excellent when it comes to charging two smartphones simultaneously, especially when the user is outdoors or away from a power outlet indoors. These ports are accessible and easy to use.

    Foldable Design

    The power bank is foldable, which is ideal for those going to want to keep it in their bag at all times. Just fold it up and know the power bank will be ready to go whenever it is time to put it to use.

    PET Laminated Finish

    The build quality is always important, and this power bank is as good as they come. It has a robust exterior that can withstand constant moving and usage. This is a good option for those who are always outdoors for a camping/hiking trip.

    High Energy Conversion

    The energy conversion is excellent with this power bank. It can offer up to 22-24% conversion on solar energy focused on by the solar panel. This ensures the results are quick and on par with what users require.

    • Offers a robust power bank that is ideal for indoor and outdoor usage
    • Can easily convert solar energy into usable energy
    • The foldable design makes it easy to move around when traveling
    • It is easy to use for charging multiple devices at the same time

    Solar Charger Buying Guide

    Advancements in technology have created a platform for the growth of numerous types of gadgets. Some of these are vital to keeping life running, while others are to spice up living.

    The need has consequently led to the necessity for constant charging to keep the gadgets properly working. While the main source of power is electricity, it comes with blackouts on unfortunate days.

    The inconveniences are why manufacturers have decided to harness solar energy as an alternative source of power. Solar is environmentally friendly and sustainable, thus a positive way of charging your machines. Well, to get this power to keep your device working, you have to capture it. One of the outstanding machines produced to enable this is solar chargers.

    What Is a Solar Charger?

    A solar charger is like any regular charger you may use to charge your phone, but it uses solar panels to harness the sun’s energy as a power source.

    The huge benefit of this device is it can charge an array of items. The only condition is you place it under direct sunlight. It cannot store this energy. Therefore, you have to make the best of the machine while the sun is high in the sky.

    There are different models in the market, each with varying features. The most common differences include size and capacity. Before making purchases, it is vital to learn more about its functioning. Only then can you determine if the option is ideal for your needs.

    How Does a Solar Charger Work?

    A solar charger performs by converting solar energy into electrical energy hence charging any appliance. It employs photons from sunlight to produce electrons, therefore, causing a flow of current.

    The device has several components that aid in its functioning. The first and the most vital is the solar panels. These tools work to capture sunlight efficiently as much as possible to create sufficient power for charging purposes. They come in varying samples regarding sizes. The choice is entirely dependent on your needs and preferences. Since they work under direct sunlight, they use silicon as the primary cell material. When the photons land on the panel, they automatically break free from their orbits hence the photoelectric effect.

    The second feature is a rechargeable battery. However, most versions come without a built-in version. The alternative is only beneficial when the machine is working. The recommendation is a lithium-ion battery to bank more battery life.

    The last component is the PCB, meaning the Printed Circuit board. Its purpose is to connect and support an array of electronic items. With the aid of the items mentioned above, the solar charge efficiently functions to charge the relevant items in your possession.

    best, solar, chargers, qisa

    What Devices Can You Charge with a Solar Charger?

    Before listing the different machines that a solar charge can power, it is imperative to learn their capabilities. The ratings of solar chargers lie in the amount of solar output in watts. Therefore, you cannot walk into a store and choose the first sample hat you see. The feature is vital as it influences the types of machines that can draw power from your gadget.

    The most vital aspect is the solar panel. Since it harnesses light, its features determine the overall performance of the machine. The rule of thumb is to compare the required power against the amount of power released.

    A typical example of devices that you can charge using this powerful machine is lead-acid and Ni-Cd batteries.

    There are also portable versions that can power up mobile phones, laptops, Bluetooth speakers, and other mobile audio devices.

    What Are the Different Types of Solar Chargers?

    People have varying needs hence the availability of different types of solar chargers. Although the goal is similar, each version assumes distinct mode operations to charge different items. There are two primary categories of solar chargers in the market, direct solar chargers and power bank solar chargers.

    Direct Solar Chargers

    As the name suggests, direct solar chargers transfer the power straight from the solar panel into the machine. These do not require a bank to store the harnessed energy. They have built-in current that efficiently converts solar to electrical energy.

    There are varying options in the market regarding size and capacity. However, most types under this category work to power machines with high energy consumption. You will notice them in public areas where the need for charging is high, and several people cause them at a given period.

    They’re also suitable for charging automobiles. The benefit of this option is you can power your machines promptly as it is a direct service. However, this is only possible when the sun is shining.

    Power Bank Solar Chargers

    Solar chargers with power banks work to use a more interesting approach. The solar charger doesn’t need to get attached to your phone for it to function. Solar power banks are what receive the power from the solar panel and charge a battery. Once the battery is full, it stores the energy, and you cause it later when the need arises.

    When choosing this design, it is vital to select a power bank with sufficient capacity to charge your gadgets. One limitation, though about power banks, is they tend to lose power whether they are working or not.

    The speed of charging varies depending on the model. Therefore you must keep checking to ensure that there’s some power to keep your machines running.

    One huge advantage of this machine is you can always charge the power bank when there’s no emergency and later use it when you run out of power. It saves you from the hassle of constantly worrying if it will be sunny or rainy.

    What Are the Benefits of Portable Solar Chargers?

    A solar charger is one machine that prevents you from staying in the dark whenever there is a power cut or while in transit. It can charge a variety of items efficiently as long as you choose a reliable model. If you were hesitant about buying the options, below are reasons to convince you.

    Eco Friendly

    Solar energy is the safest and sustainable form of power that you can ever use. Gadgets employing it work in a different environmentally friendly manner. While charging your phone, there is no possibility of emissions.


    When purchasing a gadget, you hope that you don’t end up breaking your bank to make it work. Solar chargers are a cost-saving way of powering up different machines.

    Once you buy it, that is it. You can bid goodbye to electric bills through the endless charging of your machines. Furthermore, there is a model for everyone regarding the budget. They also require minimal maintenance.


    The last aspect is the convenience that comes with the machine. There are bulky and also portable solar chargers. The bigger one requires a one-time installation as transporting them becomes a setback. However, with the mobile versions, you can always carry it wherever you are going to keep your gadgets functioning.

    The simplest design can fit in your comfortably. The assurance of always having source of power is quite fulfilling, and that’s what you get.

    Also, it is user-friendly. You do require so much training to make it work.

    Understanding its performance is, however, paramount for learning the safe ways of keeping it. The machine allows users to directly charge gadgets without the need for an additional electrical source.

    Features to Look for in Solar Chargers

    When making purchases, it is crucial to consider the following factors before making a final decision. Otherwise, you might settle for an inefficient model.


    The design is vital regarding the size and features. Do you want a mobile or big version of solar chargers. These features are essentials; they determine the performance levels.

    Quick Charging

    Enquire how much time it will take for the charges to fill up the power bank or the different gadgets you may have.

    Battery Capacity

    The capacity is paramount as it determines the amount of power it can keep for usage later when you need it.

    Power Output

    The output rating is dependant on the features of the solar panel. Their capacity to harness solar energy directly influences how much output you get.

    best, solar, chargers, qisa


    There are various mobile solar power chargers with varying capabilities. If you require something sizeable to fit in your. you will likely find it.


    When making choices assess the kind of devices that you want to charge. Is the solar power charger compatible with them?

    Solar Panel Surface Area

    They determine the amount of power harnessed at a given period.

    Multiple USB Ports

    Several ports allow for charging different machines at the same time.


    These are vital for the power bank since they show if it’s charging and the amount left upon usage.


    The longevity of the device. It should serve for an extended period without failing.

    Weather Proof

    Is it water and corrosion proof?


    It must come with a warranty as proof of quality and shield you from untimely financial losses regarding malfunctions.


    The key to finding a suitable solar power charger is first understanding how it works, its features, and its capabilities.

    Hopefully, this guide has given you the necessary information to help you make an informed decision when choosing the ideal solar charger for you.

    Solar Power Bank Charging Time – How Long To Fully Charge?

    Solar power banks can be very handy when you are off-grid, away from a mains power source for any length of time. Whether that is on a camping trip, hiking or cycling, using the sun’s energy is an environmentally friendly way to charge your electronic devices. But how long do solar power banks actually take to charge? Typically in direct, unobstructed sunlight, you should allow up to 50 hours to charge the battery on a standard (25,000mAh) power bank fully. This is, of course, a very rough estimate based on my personal experience and what manufacturers state. But there are also many other factors to consider too which I will try and cover in detail in this article.

    How does a solar power bank work?

    Solar energy is one of the most sustainable and environmentally friendly ways to generate electricity. A solar power bank uses a small built-in solar panel to charge a rechargeable battery (usually a lithium-ion battery). The panel is a photovoltaic cell which is sandwiched between a semi-conductive material (usually silicon). This silicon has been altered by adding phosphorus to one end which creates a negative charge and boron to the other end which creates a positive charge. This allows an electrical field to be created. This electric field causes electrons (tiny particles) to move around within the cells. If you imagine sunlight also as a stream of tiny particles (called photons) hitting the solar panel these photons occasionally strike one of the free electrons and knock it out of the circuit where it is then collected by a conductive plate to create electricity and re-charge the battery. Lithium based batteries are favoured, as lithium is a substance that has a high tendency to lose electrons. Meaning electrons will easily move from one side of the battery to another when prompted, making them great for charging your electronics.

    What is the best time of day to charge a solar power bank?

    So now you know to re-charge the battery, we need to get as many photons hitting the solar panel as possible to increase the likelihood that an electron will be knocked out of the field to be used in the battery. The sun’s intensity varies depending on the time of year and the time of day. But remember it is the light not heat that the solar panel uses and so just because it is the hottest part of the day doesn’t mean that is the best time to charge. In fact, the light energy is often highest earlier in the day before temperatures get to their peak and extreme high temperatures can even affect the performance of the panel, making them less efficient.

    Can it charge in indirect sunlight?

    The reality with solar power banks is that you will be moving around a lot whilst using them. Many people like to attach them to a backpack for example. The answer is yes, it will still charge in indirect sunlight but nowhere near as effectively. This probably seems obvious now you know that you need the photon particles in order to generate electricity and charge the batteries. Less direct light hitting the panel means less chance of interaction with the electrons and therefore less charging occurs. With such a small panel you will need as much direct sunlight as possible and so if you have the option of a shorter time in direct sunlight over a longer time in indirect sunlight I would choose the direct sunlight option every time.

    Will it charge in the shade?

    A common misconception is that a solar panel will still charge on a hot day, even when in the shade. This comes back to the thought that heat is used to generate power, we now know this is not the case. You probably guessed it then, that unfortunately, your solar power bank will not charge in the shade as no photons are reaching the photovoltaic cells. ‘Shade’ is a term that will vary greatly though. Most objects causing shade will not be blocking out 100% of the sunlight. A tree, for example, will still let through quite a bit of light and so it will still charge a solar power bank, just much more slowly than in direct sunlight. So obviously if you can avoid shade then you will see much better results.

    Will it charge when it’s cloudy?

    Clouds have a similar effect to objects causing shading. They prevent as many photons from reaching your panel. Therefore, the same as in the shade, the solar power bank will still charge but at a much slower speed. Estimates and studies show this to be around 25% of direct sunlight on a moderately cloudy day and as little as 10% on a very cloudy day.

    So what’s the point then?

    You can see that it is slow to charge these banks in just the sun, around 50 hours! This compares to around 5 or 6 hours from mains electricity.

    You may be asking now, what is the point in even trying to charge the power bank using the sun?

    Most manufacturers therefore only really recommend charging from the sun to ‘top-up’ the battery or for use in emergencies.

    This is how I use mine. I’ll charge it from the mains before I go on a trip and then I’ll leave it attached to the outside of my bag or on the ground when I’m camping to get some extra charge.

    I still find this very useful, if you are out camping for a long time it can get you some vital battery which you might not have been able to get otherwise.

    It’s a balance between practicality/ size and performance. With current solar technology, you would need several panels to provide the charge required to match that of your household plug socket. That wouldn’t exactly be the most practical solution for carrying around.

    The nature of charging batteries too also means it will charge much more rapidly for the first 50% and then slow down thereafter. You may never use the sun to fully charge the power bank but might just use it to get a little extra ‘juice’ for those emergency situations when you are far away from the nearest power source.

    Can you speed up the charging?

    Add more panels

    As you might have noticed with the examples. The ADDTOP which has 4 panels rather than the standard 1, charges much more rapidly.

    panels give you more surface area for photons to strike and therefore electricity to be generated.

    Taking this into account the best way to speed up solar charging is to add some more panels. This obviously requires you to have more space but there are some great options out there now.

    The Nektek Solar Charger is a solar charger designed for the outdoors that has 3 decent size panels that fold up. There is no battery included in the unit but with USB outputs this will allow you to recharge your solar power bank more rapidly.

    And because it has 2 USB charging points you can be recharging your device and recharging the power bank at the same time, making the best use of any available sunlight!

    Using this you should be able to fully charge a large solar power bank in just one day.

    Optimize conditions

    This one is a bit more obvious, but make sure you optimize the chances of getting as much energy as possible to the panel. Keep it in direct sunlight and avoid shade.

    If you have the option of staying still for a few hours then that will be better as you can move the panel and ensure it is always getting direct sunlight. If you are on the move and have it attached to a backpack for instance then a lot of the time you will be facing away from the sun or standing in the shade.

    How do I tell when it’s fully charged?

    Pretty much all solar power banks I have used or seen have a series of LED lights on the side to indicate the level of charge. When all the LED lights are on the device is fully charged.

    However, the device will still work fine when only half charged so don’t worry about waiting for full charge before using it!

    How many times will it charge my phone when fully charged?

    This will again vary depending on the size of your power bank and the type of phone you are trying to charge. But from my experience with a 25,000mAh power bank, fully charged you can expect about 3-4 full charges of an iPhone.


    As you now know it takes a long time to fully charge a solar power bank using just the sun’s energy. But I don’t think that really matters and it isn’t how these devices are designed to be used.

    Charge them up fully before you go (of course make sure your home electricity is renewable too ) and then use the suns energy to ‘top-up’ the power bank to extend the use further than it would normally go. Think of the solar panel as more of a bonus feature.

    If you are going ‘off grid’ for a while the reality is you will need to get yourself some more panels or you will be sat around for weeks! There are lots of great folding, portable solar panels sets out there now.

    Rob is the head writer at Innovate Eco sharing knowledge and passion cultivated over 10 years working in the Environmental Sector. He is on a mission to build a community of people that are passionate about solving environmental problems.

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    As I’m sure many of you did, I sat down to on Sunday evening to watch David Attenborough’s latest ‘last ever’ series Wild Isles (David it’s time to accept you will live till at least 150.

    About Me

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    Solar Power Bank Not Charging (Causes Solutions)

    Are you an outdoor enthusiast who relies on a solar power bank for your adventures? Maybe you have a power bank as a reliable backup for emergencies? Either way, discovering that your solar power bank isn’t charging can be a frustrating experience. In this post, we discuss five possible reasons behind solar power bank charging issues and provide practical solutions to help you troubleshoot and fix each problem. By following these tips, you can ensure that your solar power bank is always ready to charge your devices, no matter where you are or what situation you’re facing.

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    Reasons your solar power bank is not charging

    There are many reasons why your solar power bank might not be charging. Here are the five most common ones:

    The battery has reached the end of its life

    Unfortunately, no battery lasts forever. It’s inevitable that it’ll reach the end of its lifespan after performing a certain number of cycles. If you’ve had your solar power bank for some time, your battery might have lost its ability to hold a charge.

    You’re not using it properly

    Although technically, you use your solar power bank while it’s charging (in an emergency, for instance), this practice isn’t recommended. Doing so frequently may result in your solar power bank not charging or charging erratically. When you do this, the power banks’ battery is in line (or in series) with the gadget. The result is a higher power draw which leads to excessive heating that can damage your battery.

    Your solar panel isn’t getting enough sunlight

    A common misconception is that the solar panel in your solar power bank can generate electricity on a hot day, even when placed in the shade. That is not true — solar panels require direct sunlight to work effectively. Additionally, solar power banks require a minimum amount of luminous flux per area unit (also called lux). If they don’t receive the minimum amount of lux, they won’t start charging via solar. The following image showing the charging instructions of a standard solar power bank serves as an example. Notice that it requires a minimum of 25,000 LUX sunlight to charge via solar.

    Wrong or broken charger/power cable

    If you’re trying to charge your solar power bank using a USB charger and it isn’t charging, the issue might not be your power bank. It could instead be the charger or the cable. Make sure you’re using the correct charger, one that delivers the proper voltage and current (as required by your solar power bank). If it still doesn’t work, the charger (or just its power cable) could be broken.

    Excessive battery drainage

    We recommend that you recharge your solar power bank before you drain it completely. If you drain your power bank completely, it’ll require more energy to get going again instead of charging it from a 50% state of charge. As a result, if you deplete your solar power bank entirely, it might take even longer to charge with solar, or in a worst-case scenario, it might not charge at all. Related reading: How To Use A Solar Power Bank – A Helpful Guide

    How do I know if my solar power bank is charging?

    Charge your power bank properly. Doing this ensures that it provides you with power when you need it.

    best, solar, chargers, qisa

    Led indicators

    Most Solar Power Banks on the market have four tiny LED indicators that flash progressively when charging. Although they may vary in size and color, you can quickly identify them on your Solar Power Bank. Advanced models display different LED colors to indicate the charging source. After reading the User Manual from a few different Solar Power Bank models, we’ve noticed that for most models:

    • Blue LED: Indicates USB port charging
    • Green LED: Indicates solar charging

    Furthermore, the LEDs indicate the state of charge when the solar power bank isn’t charging (and the LEDs aren’t flashing). In this case, the lights represent:

    • 1 LED on = 25% state of charge
    • 2 LEDs on = 50% state of charge
    • 3 LEDs on = 75% state of charge
    • 4 LEDs on = 95%-100% state of charge

    Logically, when fully charged, your solar power bank should have its 4 LED Indicators active. As it discharges, the indicators gradually turn off.

    Because of the variety of models, you might find yourself with a device that indicates charging differently than the way we described.

    For this reason, we strongly advise that you read your device’s user manual. There, you’ll find all the information you need, specific to your solar power bank model.

    Ways to fix a solar power bank that won’t charge

    If your solar power bank isn’t charging, don’t panic! Here are a few things you can try to get it up and running again:

    Add extra solar panels

    If you’re trying to charge your power bank with solar energy after draining it completely, it may not charge at all.

    Why? The surface area of your power bank’s solar panel might be too small to generate enough electricity to get the redox reactions in the battery going.

    In this case, adding extra solar panels might fix the problem. You can attach/connect small solar panels to your solar power bank (if it supports this addition) – you can easily find them online.

    This will increase the solar input of your power bank until it recharges to at least 50%. After this point, the electricity generated by your main solar panel (without the extra ones) will probably be enough to continue charging your power bank.

    Try charging it with electricity from a wall outlet

    As mentioned above, your power bank might be too drained to start recharging only with the small energy input the solar panel provides. If this happens, don’t give up on your solar power bank just yet. Pumping up some juice from a wall outlet might bring it back to life.

    Place it in direct sunlight for an extended period

    Solar Power Banks can take over 50 hours to recharge using solar energy. Considering how many hours of sunlight are in a day, it could take an entire week to recharge your solar power bank.

    For this reason, it may seem like it isn’t charging, when in reality, it’s just taking a long time.

    To maximize sunlight absorption and overall efficiency, one way of speeding up this process is to place your solar power bank in direct sunlight for an extended period.

    Check for any loose connections

    A more elaborate way to fix your solar power bank requires some skills. If you have previous experience repairing electronics, you could try opening your solar power bank to check for any fraying or loose connections.

    For instance, your solar power bank might not be charging because the wire that connects the solar panel to the circuit board is loose.

    In this case, using a soldering iron to solder the loose wire will fix the broken.

    Check if the battery is dead

    This one also requires exposing the inner pieces of your solar power bank.

    Depending on the battery’s chemistry (and its nominal voltage), you can tell if it’s dead by using a voltmeter to check its voltage.

    If you conclude that it’s dead, the only way to fix your solar power bank would be to replace the battery. This procedure might not be cost-effective, so do your research before buying a replacement battery.

    Here’s a little tip: You can also use the voltmeter to measure the output voltage of the solar panel. Maybe the battery is fine, but the solar panel isn’t generating any electricity.

    If you’ve exhausted all your options, and cannot find a way to fix your solar power bank, it’s time to invest in a new one.

    This video from Bushcraft Zone discusses the top solar power banks you’ll find on the market:

    The Best Portable Chargers and Power Banks for 2023

    Is your phone, tablet, or laptop typically in the battery red zone before the day’s end? These portable chargers and power banks give you the most boost when you’re out of juice.

    I love portable technology—if you can put it in a or a bag, I’m probably into it. I’ve covered phones and tablets of all shapes and sizes, and reviewed everything from game consoles to laptops in my decade-plus career. Prior to joining PCMag, I wrote articles for Android Authority, How-To Geek, MUO, New Atlas, Tom’s Hardware, and plenty of other tech publications.

    Apple MagSafe Battery Pack (Credit: Steven Winkelman)

    Watching your phone or tablet steadily run out of power when you’re nowhere near an outlet is stressful. Fortunately, third-party portable batteries are available in many sizes and capacities. Some power banks offer fast charging, wireless charging, built-in cables, AC adapters, and LED flashlights—and even the ability to jump-start your car. Regardless of your budget, you can find a portable charger that keeps your device going when your battery icon starts to dip into the red.

    But with so many options to choose from, how do you know which one is right for you? Read on for our tips, followed by the most important points to consider as you shop.

    Recommended by Our Editors

    Best Affordable PD Power Bank

    Anker PowerCore Slim 10000 PD

    Why We Picked It

    Despite its reasonable price, the Anker PowerCore Slim PD 10000 offers high-end features like USB Power Delivery for fast charging, as well as both types of USB ports.

    Who It’s For

    This 10,000mAh charger doesn’t have the highest capacity, but it’s more than enough for people who need just a little extra power throughout the day and don’t have the patience for slow charging speeds.

    Best Ultra-Portable Power Bank

    Anker 321 Power Bank (PowerCore 5K)

    Why We Picked It

    A huge battery capacity is convenient, but sometimes you need a small device that you can carry around without a backpack. The 5,200mAh Anker 321 Power Bank fits that need perfectly, especially because it offers both a USB-A and USB-C port.

    Who It’s For

    This is ideal for people who care more about portability than capacity. It won’t charge your phone multiple times, but it can still get you through a long day.

    Best for Charging Laptops

    Anker 737 Power Bank

    Why We Picked It

    The Anker 737 features 140W output, which means it can charge bigger, more power-hungry devices like a laptop just as effortlessly as it can juice up a phone or tablet.

    Who It’s For

    If you often need to charge a laptop when you’re nowhere near an outlet, this 24,000mAh backup battery can lower your stress levels. It’s more expensive than other options on this list, so people who tend to charge smaller devices like phones or tablets are better off with the more affordable choices.

    Apple MagSafe Battery Pack

    Why We Picked It

    True to its name, Apple’s MagSafe Battery Pack is notable for its MagSafe support. You can simply stick it to the back of your phone to charge it wirelessly.

    Who It’s For

    If you need to keep your iPhone running while away from home, you won’t find a more convenient solution. People with older iPhones (before the iPhone 12) need to look at other options, though, as MagSafe isn’t supported.

    Best High-Capacity Power Bank

    Mophie Powerstation XXL

    Why We Picked It

    The Mophie Powerstation XXL does it all—it has a considerable 20,000mAh capacity, 18W PD charging, and both USB-A and USB-C ports.

    Who It’s For

    If you’re looking to recharge a phone or tablet several times on the go (and quickly), this is a top choice. The only drawback is that it doesn’t support larger devices like laptops.

    Most Durable PD Power Bank

    Otterbox Fast Charger Power Bank

    Why We Picked It

    Many people know Otterbox for its durable phone cases, but the company is now bringing that expertise to the world of power banks. In addition to its strong build quality, the Otterbox Fast Charger Power Bank has all the key features you need, such as fast charging with PD, both types of USB ports, and several options for battery capacity.

    Who It’s For

    If you are worried about damaging your backup battery when you travel or commute, this is one of the safest bets. It also comes with a limited lifetime warranty.

    Best Solar-Powered Portable Charger

    QiSa Solar Charger

    Why We Picked It

    The QiSa Solar Charger can use the sun to recharge itself, supports both wired and wireless charging, and even has a built-in flashlight. Best of all, it offers a massive 38,800mAh capacity.

    Who It’s For

    If you spend a lot of time outdoors, this is among your best choices for keeping your devices running while off of the grid. In other words, it’s camping approved.

    What Size Battery Do You Need?

    On the.friendly front, most smaller batteries have a capacity of around 5,000mAh, which is typically enough to top up most phones once.

    Meanwhile, a 10,000mAh battery can give today’s flagships two full charges. A 20,000mAh battery can charge a flagship four times, or two phones two times. Some power banks have enough juice to power laptops. Of course, a higher capacity often translates to a heavier, larger, and more expensive battery.

    Most companies advertise how many times their products can recharge popular phones, but if you want to calculate that number for yourself, RAVPower has a useful guide (Opens in a new window) that can give you an estimate.

    In the end, it’s best to assess your typical needs before buying. If your phone hits the red zone by mid-afternoon and you only need enough juice to get you to the end of the workday, a 5,000mAh battery should be plenty.

    What’s the Difference Between Power Input and Output?

    You’ll find three types of ports on today’s portable batteries:

    Generally speaking, you charge the battery itself via micro USB or USB-C (input). Some batteries charge faster than others and USB-C charges much faster than micro USB.

    Nearly all batteries include a standard USB-A port (output). This is for plugging in USB-A-to-micro-USB, USB-A-to-Lightning, or USB-A-to-USB-C cables for charging your iPhone or Android device.

    Some batteries include built-in output cables and these generally have micro USB, USB-C, or Lightning connectors.

    The most important thing to do is to match the battery’s output to your phone’s input. For example, if you have an iPhone, be sure the battery has its own Lightning connector or supports USB-A-to-Lightning or USB-C-to-Lightning cables.

    Larger batteries with higher capacities might include a multitude of ports to support input and multiple outputs at the same time. You may see two USB-A and two USB-C ports, for example, though micro USB ports are becoming less common.

    If you picked up an iPhone 13 or iPhone 14 and were surprised by the lack of an included wall charger, see our article on charging your iPhone.

    What Is Fast Charging?

    Another factor to consider is how quickly a power bank can charge your device. Battery output is measured in voltage and amperage. Amperage (or current) is the amount of electricity that flows from the battery to the connected device, while voltage is the amount of potential energy. Multiplying volts by amps gives you wattage, the measure of total power. To make devices charge faster, most manufacturers either vary the voltage or boost the amperage.

    Today’s devices support a wide range of Rapid-charging technology, such as Qualcomm QuickCharge, USB Power Delivery, or proprietary fast-charge systems.

    Quick Charge works by increasing voltage rather than amperage. This standard typically allows you to charge supported phones to 50 percent capacity in 30 minutes, which is especially helpful when you need power in a pinch.

    Power Delivery is a newer protocol in which two compatible devices negotiate on the fastest charging option available based on the charger, cable, and circuitry. It also allows for power to flow both ways.

    The most common devices (Apple iPhones and Samsung Galaxies) support charging rates of 27W and 45W, respectively. It’s best to look for batteries that can support charging in that range.

    Is Pass-Through Charging Safe and Useful?

    Pass-through charging is another feature to consider; with it, you can charge devices and the portable power bank simultaneously. That’s convenient if both your phone and backup battery are running on empty. You shouldn’t encounter any safety issues if the manufacturer of the portable battery you buy advertises pass-through charging as a feature, but the power output might change in this mode.

    How Does Wireless Charging Work?

    Wireless charging has become popular because it allows you to power up compatible devices without a cable. Qi is the dominant standard for compatible Android phones (up to 18W) while Apple iPhones rely on MagSafe charging (up to 15W). iPhones will charge wirelessly on Qi chargers, but only at 7.5W.

    Some battery makers have built Qi or MagSafe-compatible wireless charging into the surfaces of their portable batteries. Such batteries mean you can leave the cables at home.

    Should You Buy a Battery Case Instead of a Power Bank?

    If you find that you often forget to carry your backup battery when you need it most, you should consider a dedicated battery case instead. These combine the portability and protection of a case with additional battery capacity to keep your phone topped off at all times.

    There are several drawbacks. First, they have limited additional capacity on board. Second, they are limited in terms of the number of phones they support (mostly just iPhones, Galaxies, and Pixels). Third, you can’t charge much else with them.

    The Best Wireless Chargers

    Why fumble around for a charging cable when you can rest your phone on a wireless charging pad? Whether you’re an Android user or an iPhone fan, check out our roundups of the best wireless chargers and the best MagSafe chargers to help you cut the cord.

    Steven Winkelman contributed to this story.

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