ALLPOWERS 2 Pieces 2.5W 5V/500mAh Solar Panel DIY Battery Charger Kit Mini Encapsulated Solar Cell Epoxy for Battery Power LED 130x150mm (Solar Panel Only)

Well built and worked as advertised

I've got these to charge NIMH on sensors . Along with charging PCB ($6) it keeps my sensors operational without a need to take battery and charge them. Yes I needed to open the sensor and solder the charging board

Each panel in my kit gives 5w. The description on this product seems to indicate that in series these panels would have a total of 5w. That's not the case for mine which is fine for my usage. I have them wire in parallel to work at 5w and produce more amps. So depending on your use case this might be important to know. Other than that these work great. Solider on your wires, build a frame and put them in the sun.

Well made, works as expected.

I bought 2 solar powered flood lights a year ago that were perfect for my application. The lights are supposed to stay on all night in the dim mode and brighten when motion is detected. One light worked properly and is still working as it should. The other light would only last about an hour. I contacted the vendor and was sent a replacement, same thing, the replacement would only last about an hour. I contacted the vendor again and was just given a refund for the bad light. So I ended up with one light that stays on all night, every night, and 2 lights that only last an hour. I decided to roll the dice and buy these panels not knowing if the problem was the battery or the solar panels. I replaced the panels in both lights, let them sit in the sun for a day and now both of the bad lights come on at dusk and are stay lit until the sun comes. The original panels were 150x144mm and these are 150x130mm. They fit the frame one way and leave a little gap the other way which isn't an issue at all, I'm just glad they work as they should.

Works Great.

Used this to power a yard ornament and it worked great for 2 years. Then the ornament microcontroller started locking up. I first suspected the battery the panel charges through a controller. Replaced that but still had to be resetting the microcontroller to get it working again because even with a new battery, the battery wasn’t being fully charged. Replaced the panel and all is fine again.The plastic encapsulant had gotten dull over almost the entire surface and was blocking a lot of the light transmission. The panel itself seems still good but the plastic overcoat shadows it. Might try sanding and polishing the overcoat to see if performance comes back but coatings on a solar panel ought to stand up to sunlight.Still, for the price they aren’t bad. The performance just drops off after around 2 years.

Like most products from China the stated performance is optimistic. I measured the currrent output thru a 10 ohm resistor with full sunlight (sunny, clear day) and it was closer to 375 than 500 MA. Maybe in some special lighting situation it would get 500. But for my application it is good and I am satisfied.