On bright sunny day, Vmp=20.2 volt, Imp: 10.2 amp on a good solar angle. I was able to get up to 11.763 amp.

Received this SOLPERK 15W 12V Solar Panel Kit for review. Since this was temporary set up, I used a tripod for the panel and hooked it up to my Travel trailer 12v battery system consisting of 2 12v deep cycle batteries. Both batteries were at full charge 6 weeks ago when the panel was hooked up and the shore power battery maintainer was disconnected. We've had a few partially sunny days and but mostly we've had cloudy weather over the last 6 weeks here in the Seattle region. The travel trailer was unused with the exception of some interior maintenance where the interior lights were on for several hours. So the batteries were on a light load a few times. Tested the battery levels today and they show readings consistent with a full charge. The batteries are over 4 years old and I did expect some power drain. As there was none, that indicates this 15 watt solar panel is doing its job. I will update this review next spring or sooner if this unit fails in some way to maintain these batteries at a proper level. So far it's performance is very satisfactory.

Would give it zero stars if I could, just stopped working. Won't charge and there is no support or customer access to product support. I am so disappointed in this unit, when I needed it it was dead and there is nothing I can do. I don't know if I got a dud or if they are all like this, but I won't be buying any more Grecell products.

bought it for my small power station. takes a little bit to charge up but worth it for the price and size. it folds up pretty small and with the handle and pocket makes it convenient to travel with. Doesn't take up much space at all.

Strong