How to make solar mobile charger?
I want to make a solar charger for my mobile....I want to charge my 3.7 v Lithium-ion battery near about 1500 mah....The solar panel would be about "6-7 volts and 200-250 mA"... or "6 Volts-3 Watts-400mA"..
which instruments will i need...I have average...