SOLVAO 7.5W Solar Trickle Charger Battery Maintainer
If not used regularly, batteries naturally drain power and if allowed to go flat, may never regain their full power. This solar powered battery maintainer helps manage battery drain in all seasons. The solar charger converts light energy from the sun into 12 volt DC electricity, which is then transported to batteries through a wire and your connector of choice.
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If not used regularly, batteries naturally drain power and if allowed to go flat, may never regain their full power. This solar powered battery maintainer helps manage battery drain in all seasons. The solar charger converts light energy from the sun into 12 volt DC electricity, which is then transported to batteries through a wire and your connector of choice.
Keep Your 12v Battery Charged Year-Round
Use for any rechargeable 12 volt battery and a variety of off grid applications, even in in cloudy conditions and other inclimate weather!
Our 7.5 watt solar powered trickle charger can be used for any rechargeable 12 volt battery and a variety of off grid applications! Perfect for automobiles, boats, motorcycles, RVs, motorhomes, marine, tractor, powersports, trucks, snowmobiles, golf carts, sheds, cabins, gate openers, and any other automotive or 12V battery applications. Prevents your battery from dying if not in use for an extended time.
Plug and Play Connectivity with High Efficiency Solar Panel Blocking Diode to Prevent Overcharging
Easily installed. just plug in the solar panel, set it and forget it! No technical knowledge needed.
Great for grandparents or vehicle owners who don’t use their cars or auto mobile every day! Just set it up on the dashboard and let it charge your battery. Has a built-in blocking diode for reverse protection, which means the regulator will control the amount of power it sends and won’t damage or over charge your 12volt batteries.
- Solar energy keeps 12v batteries alive in all seasons
- High efficiency amorphous solar panel
- Built-in diode to prevent reverse charging overcharging
- Quick easy plug-and-play functionality
- Strong, durable ABS frame
- Low maintenance, portable and lightweight
- 2 different charging methods available via alligator battery clamps DC plug
Charge Any 12 volt Battery with the Power of the Sun
Because our solar trickle charger is also a maintainer, it safely charges and maintains Wet, Gel, SLA, AGM and Deep Cycle batteries, etc using solar energy. Great to keep handy for emergency preparedness, keeping backup batteries charged, camping, motorhomes and even tents that are powered.
Setup and installation takes just minutes! This product works right out of the box and can be used on day 1.
Please fully read the included instruction manual prior to use.
If you experience damaged product(s), defects, or issues of any kind, please reach out to our support team immediately. we are happy to help and will address any issues immediately!
This is an awesome solar charger. I’ve used it a few times on my RV battery and it’s done a great jobDennis Burrill
SOLVAO 7.5W Solar Trickle Charger Battery Maintainer
What Are People Saying About This Solar Battery Charger?
I had been looking for an inexpensive solar charger to keep my RV battery charged. This was the perfect answer. 7.5 watt trickle charge is perfect for when my RV is not being used. Plug and play feature makes for easy setup and teardown. Would recommend.
The length of the cord makes it adaptable to different situations. I use it in my shed with the panel on the side wall. It’s very easy to plug in and out when needed. Works great keeping the battery strong Michael W.
“This is a great little unit to keep your vehicle go-ready, especially in extreme heat or cold, when batteries tend to fail. Easy to use, no extra power source required. So cool!”
“I get these for my RVs (I build them Out of school buses). This one is mounted on my roof and works great so far. Better than the flexible panels for a more permanent answer.”
SBC750 Solar Battery Maintainer FAQs
No, this unit does not require a solar controller. There is a built-in diode to prevent over-charging.
This charger is not meant to fully charge 12v batteries, but to keep them topped off so they don’t die when not in use.
What output connections are available? if i have an electric generator with a dc, 8mm connector can i use these panels to recharge it? adapter?
This solar trickle charger includes a built-in cord measuring 8 feet, 8 inches with an SAE connector at the end. The following 2 adapters come with the unit for different applications: 1 x alligator clips for 12v battery, 1 x 12v cigarette lighter adapter.
Is there a longer cord available for the charger so the panel can be further from the battery so I can put it in a better position to get the sunlight?
At this time, we don’t offer separate cord for the solar trickle charger but we do plan on adding that in the future.
Full Product Description Specs
Please fully read the included instruction manual prior to use.
If you experience damaged product(s), defects, or issues of any kind, please reach out to our support team immediately. we are happy to help and will address any issues immediately!
If not used regularly, batteries naturally drain power and if allowed to go flat, may never regain their full power. This solar powered battery maintainer helps manage battery drain in all seasons. The solar charger converts light energy from the sun into 12 volt DC electricity, which is then transported to batteries through a wire and your connector of choice.
A reverse blocking diode inside the unit ensures the charger will not damage or over-charge your battery. Please note, this charger is designed to send a slow, steady charge to the battery and is not designed to fully charge any battery.
- Maximum Power: Up to 7.5 watts
- Current at Pmax: 400mA
- Voltage at Pmax: 18v
- Solar Panel Type: Amorphous
- Measurements: 13 3/10 x 13 3/10 x 7/10
- Weight: 2.73 lbs
- Solar energy keeps 12v batteries alive in all seasons
- High effeciency amourphous solar panel
- Built-in diode to prevent reverse charging overcharging
- Quick easy plug-and-play functionality
- Strong, durable ABS frame
- High quality glass covers the solar panel
- Low maintenace, portable and lightweight
- 2 different charging methods available via alligator battery clamps DC plug
- 1 x Solar Panel w/ 8 ft. 8 in. SAE connector cord
- 1 x Battery Clamps (approx 2 ft. with cord)
- 1 x DC Plug (approx 2 ft. with cord)
- 4 x Mounting Screws
.4W Solar Battery Maintainer
2.4 W SOLAR BATTERY MAINTAINER Charges 12V lead-acid batteries Extends battery life Works in cloudy conditions Water-resistant Environmentally safe Minimal maintenance Ideal for boats, cars, motorcycles, snowmobiles, trucks, RVs and more Contents: (1) Schumacher SP-200 solar panel (1) 12V DC adaptor (1) clamp adaptor (4) mounting screws (1) owner’s manual
Product Manuals/Tutorials
These manual(s) will explain how to use the product safely and effectively.
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Disclaimer: Products, specifications and data are subject to change without notice, to improve reliability, function, design, or otherwise. Product images are for illustrative purposes only; actual product appearance may vary. All weights and measurements are approximate. All product names, trademarks and registered trademarks are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.
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Choosing the Best RV Battery Charger: The Basics and the Options
A popular method o RV battery charging among those who camp without electrical hook-up is the Solar Panel.
A solar panel converts sunlight to electrical energy, which in turn is used to charge batteries.
Small solar panels of 15-20 watts are used to maintain RV batteries while not in use, while larger panels of 100-150 watts can often supply enough power to replace a full day’s use of the batteries.
Since 14 volts are needed to do any charging, a 15 watt panel delivers about 1 amp to the battery(s).
That’s about enough to replace the 0.25 amps per hour that many RVs have as a background (phantom) load on the battery, even when everything appears to be turned off. Small solar panels are wired direct to a battery with no charge controller.
Just “adding a solar panel” is rarely satisfactory for a RV solar battery charger. It takes careful planning, the correct components, and often a professional installation to get desired results. Read more about RV Solar technology if you are considering this option.
Wind Charging
Another alternative charging method is the Wind Charger. Basically a propeller driving an alternator, the wind charger can provide a small supplemental charging current.
Because the propeller is fairly large and must be continually aimed to face into the wind, wind chargers are not common on RVs, but in deserts or in mountain valleys where there are constant winds, they can be a useful RV battery charger supplement.
Generators
Many motorhomes and some trailers have generators to produce electrical power.
Some campers bring a portable generator with them as well. People often say their generator is charging the batteries, but that isn’t really accurate.
In most cases, the generator is providing 120v power to the RV, the equivalent of shore power, and the RV’s own Converter or Inverter Charger is doing the charging chore.
Some portable generators have an output terminal that provides DC current that can be used for direct battery charging.
Many of these units wont provide enough voltage to charge the batteries fully as mentioned above. Additionally, even it if can fully charge the batteries, the generator may have unregulated voltage concerns.
This makes it risky to use if the battery gets near full charge and nobody turns the generator off.
RV Battery Charger – Maintainers (Trickle Chargers)
A RV Battery Charger – Maintainer is simply a small charger intended to keep a fully charged battery at the 100% level.
These used to be small single stage units called trickle chargers, but the battery maintainer of today is a bit more sophisticated and does a Float Charge (see Multi-stage chargers).
Battery maintainers are usually designed to maintain a single 12v battery, but some models have multiple outputs so they can handle 2 or more at the same time.
A popular brand of battery maintainer for RVs is called the Battery Minder and another is the Battery Tender.
“Echo” Chargers and Battery Combiners
Technically these units are a switch rather than RV battery charger, but they serve the purpose by borrowing the charge from one battery and applying it to another.
They are very useful when the RV has two separate banks of batteries that are normally kept separate (isolated) but still need to be charged from one source.
The main RV battery charger is connected to the “main” battery and the Combiner “echos” a portion of the charging amps to the secondary battery while still keeping them isolated from each other.
In a motorhome this method is often used to charge the chassis (engine) battery from the house batteries while the RV is connected to shore power.
Some examples of RV Battery Combiners are the Xantrex Echo Charger, the Magnum Smart Battery Combiner, and the Ultra Trik-L-Start.
What are the best solar battery chargers on the market in 2023?
If you have access to the sun and a solar battery charger, you can rest easy when it comes to keeping electronics charged and ready for use.
In 2023, photovoltaic solar panels can do more than power your home. they can keep your electronics charged and power up your car battery, too! Solar power can be utilized from almost anywhere and can charge basically any device with the right charger.
The number and wide variety of solar battery chargers on the market can be a bit daunting, so we’ll make it easy for you. Whether you need a solar charger kit for charging your phone battery, car battery, boat battery, or supplying power to your RV, our favorite products on the market are covered below.
Editorial note: This is an unbiased review: we have no financial ties with any of the companies mentioned, nor do we earn money from affiliate advertising. The content of this blog is based on research and information available at the time of writing.
Best solar batteries and solar panel kits to buy
We picked these options based on their performance, ease of use, and practicality. Some chargers are built only for one use, such as charging a phone, and others use an adapter that can work to charge anything from car batteries to boat batteries.
Best overall
SUNER POWER 12V Solar Panel Car Battery Charger Maintainer
- Comes with a 1-year warranty
- Can be used for 12v batteries in cars and boats
- Does not include a solar charge controller, which acts as a regulator for potential overcharging
Best for RV/ATV use
Renogy 400 Watt 12 Volt Solar Premium Kit
List price: 819.99 (often on sale for less) Buy Now
- 400 Watts of power to keep your RV lights on and running
- Solar panel, charger, and brackets are all included in the kit
- Renogy is a well-known, trusted brand
Best for small appliances
BigBlue 3 Portable Charger
List price: 79.99 (often on sale for less) Buy Now
- Very reliable, works in cloudy conditions
- Charges electronics, like iphones and ipads, safely
- Lightweight, foldable and easily portable
Best for boats
Topsolar Flexible 100W Solar Panel
- Thin, flexible monocrystalline 100-watt solar panel
- Sealed to be waterproof, wear-resistant panel
- Includes connector cable to attach to a charge controller
Best for cars
Sunway Solar Car Battery Mppt and Trickle Charger and Maintainer
List price: 59.99 (nearly always on sale for under 40) Buy Now
- Designed for daily use, diminishing risk of overcharging the battery
- Includes LED light to monitor charging
- Options available from 1.5kW. 8 kW, includes alligator clips
How do solar battery chargers work?
Similar to how solar panels power your home, a solar battery charger powers a device’s battery. Portable solar chargers use their solar cells to absorb and then transfer solar energy in order to supply electricity to devices or to charge lithium-ion batteries within devices.
Solar battery chargers range in price, depending on which type you need, but many can be found for under 100.
Despite their relative ease of use, some people think they are not as powerful as traditional chargers. But, as the technology becomes more sophisticated, you won’t have to worry so much about their power. or lack thereof.
Do solar battery chargers really work? What type do you need?
Yes! Solar battery chargers can fully charge your devices. The only thing is, if the battery has reached the end of its lifetime and needs to be replaced, a simple recharge won’t cut it.
They do take a longer time than gas powered or wall powered chargers but they are a great option for traveling or off-grid living.
Determine which one will work for your needs by answering the questions below:
What do I want to charge, something as big as a car or as small as a phone?
If you are looking for a charger for a specific purpose, like charging your car battery, then you can look strictly at solar car battery chargers. Typical 12V car batteries aren’t always the most reliable, especially if there is an accidental light in the car left on overnight or a car sits idle for months.
Once you determine the category of chargers you are looking at, i.e., automotive chargers, then you can pick between the chargers available. The size and type of the battery you need to charge will determine the size and amp power of the charger you need.
Solar powered battery chargers are a great way to add a charge to your 12-volt battery and act as a battery maintainer to expand their lifetime and practical use. Many of these batteries are known as ‘trickle charge batteries’ because they produce a low current of electricity to charge batteries’ power banks.
How portable do I need the solar battery charger to be?
Portability is important, especially if you are planning to use your solar battery charger while camping or on the go.
But if you need the charger as a backup for your car battery, it doesn’t need to be portable and can sit in a garage for use only when it is needed. or be stowed in your car for emergency use!
Do I want individual solar battery chargers for each prospective use or one that serves multiple purposes?
You might be thinking to yourself that you don’t want a few different chargers for each device, that only one solar battery charger is necessary for you.
Luckily, there are charger options that can serve many purposes! So if you don’t particularly care about portability but more about practical uses, buying a general charger makes sense.
Other things to consider are making sure it’s waterproof if it is used for a boat or dust-proof if it is needed for camping and hiking. You can narrow down your search by getting specific about what role your solar battery charger is going to play.
Increase your solar savings with a solar powered home
Relying on solar power makes your life easier. all you have to do is set up the solar panels and let them be.
With portable solar battery chargers, you can improve and maintain the charge for your car, boat, and RV battery packs. from anywhere. If the concept of using the sun’s energy to power your appliances appeals to you, a solar powered home might also make sense.
Learn how much it can cost you to power all of your electricity usage with solar panels alone.