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It keeps my weak battery fully charged every day. Had no problem starting car ever since. Mechanics says my battery only has 40% capacity left. But the voltage is only 11.6V, so he's been over optimistic. Recently I was away from home for 3 weeks. Coming back from the trip, the car started immediately.
Verified purchase: Yes | Condition: New
I tested these solar panels on a bright cloudless sunny day connected to a fully charged 12 volt 2AH wet cell battery. I had it connected to a 60 amp regulator and a load that drew about 600 MA. The most I could get out of either one was 12 volts at 364 ma. of current. This amounts to less than half of the advertised power. Needless to say in a short time I only had 11.5 volts of battery power. I would not advise buying these panels unless you don't need more than 5 watts. Overall rating: P.O.S.
Verified purchase: Yes | Condition: New
The ease of the product is great. Works very well even on cloudy days.
Verified purchase: Yes | Condition: New
Not the highest quality panel, but good for the price. Could be wrong, but seems like after some time in the sun it will warp unless better supported on the back side. Price is best I could find for cheap project I was working on.
Verified purchase: Yes | Condition: New
I have this on top of my shed trickle-charging a 'lawn and garden' battery that I had given up on. the battery would not work in my mower, but with this solar panel charging it constantly it is providing power to some LED lights in my shed.
Verified purchase: Yes | Condition: New