Use the power of the sun to keep the 12V battery (sold separately) charged in your car, RV, ATV or boat with the Competition Solar 7W Amorphous Solar Power 12V Battery Charger. Amorphous thin-film solar panel technology allows high performance even in cloudy, hazy or indirect light. Installs easily by hooking its cables to your battery. Provides up to 0.6 amps of power. Portable.
Features and Benefits
Recharges the 12V battery (sold separately) in your boat, car, RV or ATV using solar energy
Amorphous thin-film solar panel technology allows high performance even in cloudy, hazy or indirect light
Installs easily by hooking its cables to your battery
Provides up to 0.6 amps of power
Number of Batteries:
Product weight (lb.):
What's in the Box
Competition Solar 7W Amorphous Solar Power 12V Battery Charger
Rated 5 out of
Kevin 78748 from
Great productIt really works and mage electricity to use everywhere
Date published: 2017-02-23
Rated 5 out of
Does what it says on the tinThis panel is great. If you're intending to charge a small battery with it, be careful. It's sold as a 12V unit, but I measured an open-circuit voltage of 24.5V in mottled early-evening sunlight (laying flat, central TX, winter). This means if you intend to use it to maintain a small (i.e. ATV or lawn mower) battery you might be at risk of boiling the battery's electrolyte with excess voltage. I wouldn't expect it to be a concern with automotive batteries or batteries in applications where there's a sustained load of at least a watt or two. If you have doubts, you'll probably want a charge controller.
In that same light it measured approximately 500mA short-circuit current. I wasn't able to test for peak power, but it's entirely possible it was making at least 5W in that low light, and I wouldn't be surprised to find out it could do 12W in full sun.
On the back it has four M8 size T-nuts captured in the long sides of the frame rail. The box that contains the cable-panel junction is probably somewhat moisture resistant, but you should consider filling it with RTV if it's going to be in a place where it can get wet. Otherwise it looks like it will be durable in my outdoor installation.
For the price it seems like a great deal, and I plan on buying more for other uses.