A while ago I bought 40pcs poly-crystaline solar cells (5 x 2 cm2) with the hope that I will find some spare time to build a small 5W solar battery charger. Each cell provides an average of 0.28A @ 0.5V…
5W solar battery charger for 5 bucks
How to build a 65W solar panel system with only $80
For some time I was interested in testing methods of building a cheap solar panel using cheap solar cells and other things that you might find on the junkyard, so I've set up an experiment with the aim to build…