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Sunforce 50012 1.8-Watt Solar Battery Maintainer

Brand: Sunforce

431 ratings

| 37 answered questions

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Charges 12-volt batteries and creates 1.8 watts of energy
Works with automobile, motorcycle, tractor, boat batteries and more
Made of durable ABS plastic and amorphous solar cells
For indoor use--solar panel is not waterproof
Built-in blocking diode to prevent reverse discharge

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Customer Rating	(431)	(2643)	(38)	(562)
Price	$20.42	$39.99	$32.95	$34.59
Shipping	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping. Details	FREE Shipping. Details	FREE Shipping. Details
Sold By	Amazon.com	Eco Home	Amazon.com	Amazon.com
Item Dimensions	4.92 x 0.47 x 13.86 inches	13.9 x 5 x 0.5 inches	8.4 x 0.5 x 14.4 inches	12.6 x 0.8 x 12.6 inches

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Product information

Technical Details

Manufacturer

‎Sunforce

Brand

‎Sunforce

Model

‎50012

Item Weight

‎1.35 pounds

Product Dimensions

‎4.92 x 0.47 x 13.86 inches

Country of Origin

‎China

Item model number

‎50012

Is Discontinued By Manufacturer

‎No

Manufacturer Part Number

‎50012

Cover Included

‎Solar panel with 8ft. (2.4m) of wire, 12V DC plug, battery clamps, suction cups

Additional Information

ASIN

B0006JO0KG

Customer Reviews

431 ratings

4.1 out of 5 stars

Best Sellers Rank

#305,889 in Automotive (See Top 100 in Automotive)
#558 in Battery Chargers

Domestic Shipping

Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.

International Shipping

This item can be shipped to select countries outside of the U.S. Learn More

Date First Available

August 30, 2004

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Product guides and documents

Product Documentation (PDF)

Product description

Maintain your vehicle’s 12V battery charge with the Sunforce 1. 8W Solar Battery Maintainer.

From the manufacturer

Convenient Power that Helps Maintain your Batteries


Sunforce 1.8 watt, 12 volt Solar Battery Maintainer No more battery drainage with the Sunforce 1.8 watt, 12 volt solar battery maintainer! Whether you are storing your car during the winter months or leaving your vehicle unused for long periods of time this solar battery maintainer will ensure your engine always starts. The ideal choice for cars, boats, SUVs, tractors and more!	Easy DIY Installation Just plug the charger into your vehicle's 12-volt lighter socket and position the panel to pick up the most daylight possible. Or, if you prefer, use the included battery clamps to connect the panel directly to the battery. Regardless of how you hook up the battery maintainer, you'll never get caught off guard without the power you need to start your vehicle.	Key Features Includes: Suction cups for mounting, battery clamps, and 12 volt DC plug. Connects to 12 volt battery. Quick connect technology. Fully weatherproof design. Maximum power output: up to 1.8 watts, 120 mA.	About Amorphous Solar Power Solar panels convert sunlight into an electric current, they do not store power. Amorphous solar panels are created by spraying silicon onto glass in very thin layers, and are commonly known as thin film solar panels. This process allows them to be better at generating electricity in all lighting conditions, including cloudy or shady environments. Amorphous solar panels have a maximum operating temperature of -40 to 176 degrees Fahrenheit, requiring virtually no maintenance.

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Customer reviews

5 star		59%
4 star		17%
3 star		12%
2 star		4%
1 star		9%

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Top reviews from the United States

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J. Silvers

Backwards

Reviewed in the United States on February 21, 2018

Verified Purchase

The wiring is backwards when using it with the connections that come with most battery tenders. You have to use the connections they supply or else they will be hooked up backwards.

As you can see in the photos the connector on the left is from a very popular trickle charger that I used while the battery was out of the vehicle.

The connector on the right is the one that comes from the solar panel and used the terminal clamps that came with it.

If I were to plug the solar panel connector right into the harness I used while trickle charging then it would be hooked up backwards.

I hope the photos help.

12 people found this helpful

Helpful

Romby

Did not work at all

Reviewed in the United States on June 14, 2018

Verified Purchase

Purchased the Sunforce 50012 1.8-Watt Solar Battery Maintainer for my pontoon boat. I placed it in full sun to get fully charged and installed it directly to my battery. During the day my on board digital voltmeter dropped a bit so I decided to check out the solar panel for myself. I disconnected the maintainer from my battery, placed it in full sun and connected it to my multimeter. The results were that it was not working at all besides the fact that the blue light continue to blink. Maybe I got a bad panel or something, but I will not waste my money on anther one.

5 people found this helpful

Helpful

Brian Westerman

no more blue light.

Reviewed in the United States on August 24, 2019

Verified Purchase

They changed the maintainer so that the little blue light (which told you it was working or not) has been removed. I really mis that as it's really (without testing it on a multimeter) that you can tell that it is actually still working. I have owned several of these, and they are great, but without the light you are just taking a big chance on if it's working. I'm not willing to find out after a month that it failed when the car won't start.

3 people found this helpful

Helpful

Reign Security

Like the suction cups too.

Reviewed in the United States on January 16, 2019

Verified Purchase

I used this smaller solar panel to check our larger solar panel angles with. I put a meter on the ends and lifted toward the sun while watching the meter to see where the best lean angle was for charging, that is how sensitive it was. All I could get was 1.76v from it which is within what they listed it to do. It was amazing to see how much the angles matter and since it is winter now the sun angle is very low and the better you get the angle the more power you are making. It was well packed and seems to be made out of real glass, will be using it to keep my motorcycles and car batteries charged.

2 people found this helpful

Helpful

A decent product. Worth the money.

Reviewed in the United States on August 18, 2014

Verified Purchase

It works OK, but not even close to 125mA. Under 90deg illumination in full california sun without a single cloud in the sky - I get 70mA. Wouldn't get my car battery past 13.05V. Still - it's better than nothing. I'm often gone for a few weeks (travelling on business) and I park my car in the street - cannot hook it up to a battery tender. This little thingy kinda does the trick. I would buy a little bigger one if I knew that this one doesn't give that much power.

FYI: 70mA is achievable when it is outside the car, pointer directly towards the sun. In reality it has to stay inside the car and then you get ~55mA max (the windshield absorbs most of the UV and reflects quite a bit of Vis). Take into account that the sun is moving and you are not in the car to keep rotating the panel to face it directly... overall you don't get that much charge. But it's kinda enough to do the trick.

On another note - black is not a good color (if you can call black a color). The frame gets really hot and the cable softens up a lot in the direct sun... But it keeps working, so I guess it's alright...

5 people found this helpful

Helpful

Mike

Works like a dream

Reviewed in the United States on June 18, 2017

Verified Purchase

I have used one of these for the last 6 years, to keep my garden tractor battery topped off. If I would guess the average life of a garden tractor battery is about 2 -3 years tops. After I set this solar panel up my battery has lasted over 5 years. After each winter I would always have to drag my charger out to the shed and charge the battery, but with the solar charger that is not necessary anymore. The panel does not need direct sunlight to work just light! I would also recommend purchasing the regulator, as this will keep the panel from discharging/over-charging the battery. I purchased this as a gift for someone in my family having the same issues with batteries.

3 people found this helpful

Helpful

Robert BlankTop Contributor: Camping

Nice solar chargers

Reviewed in the United States on November 12, 2016

Verified Purchase

So far so good. These come with 2 connector types so you can clip or permanently mount them to your battery. The suction cups are holding up so far too. They do come with an extra pair just in case. One of my cars I have an alarm and it drains the battery down over a one month period of time. Since I have got these chargers I have also started driving the car every other week or so. So if by buying these, I am driving a car which should be driven anyway then this is still money well spent. I did check the output on a mild fall day and they put out what they were rated for so I am very pleased with that.

Helpful

Emrol Ed

Poor solar cell connections.

Reviewed in the United States on December 24, 2018

Verified Purchase

Unit stopped working after 8 month. Took off the back panel and found that the negative connection was not contacting the solar cell connection. Appears that original solder did not bond and fresh solder would also not bond. I used a small piece of packing foam and the back cover presses on the solder blob. It is working now. Not sure if the foam will hold up. Might need to rig up a small spring instead.

Helpful

Top reviews from other countries

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Paul Babier

Free and green

Reviewed in Canada on September 19, 2017

Verified Purchase

Kept my Motorcycle Battery fully charged all winter ....perfect since it uses the sun not my electric bill...even though a trickle charger wouldn't use much - is free and green!

el chief

Bien

Reviewed in Mexico on September 24, 2020

Verified Purchase

Las gomas para pegar al vidrio son chicas y de mala calidad

Translate review to English

Jim

Sunforce Battery Maintainer

Reviewed in Canada on January 14, 2014

Verified Purchase

Excellent little product for low mileage drivers. I just put it on the dash when parked and plug it into the cig. lighter outlet. Modern batteries seem to just go flat rather than run down. People don't like to boost them because the cars are high tek. This is the solution and it's not costly.

Seems to work

Reviewed in Canada on October 25, 2014

Verified Purchase

I attached this to my boat battery to keep it charged over the off-season. So far it seems to be keeping the battery from draining even though I don't get a lot of sun. I need to post an update after a longer test period.

bridarpet

It is like a warm start when plugged in for your car

Reviewed in Canada on July 28, 2014

Verified Purchase

Had one of these for years and the wire got broke. It is like a warm start when plugged in for your car. Remember not to use remote starter when this is plugged in.

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Sunforce 50012 1.8-Watt Solar Battery Maintainer

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Frequently bought together

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Have a question?

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

Product guides and documents

Product description

From the manufacturer

Convenient Power that Helps Maintain your Batteries

Sunforce 1.8 watt, 12 volt Solar Battery Maintainer

Easy DIY Installation

Key Features

About Amorphous Solar Power

Customers who bought this item also bought

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