this is a simple battery charger with torch light

Step 1: Materials Required

torch with about 4v,below 6v battery
charger pin(it should be fit to the torch )
battery(AA ,AAA or mobile battery. but there are some battery is cannot be charged so you should be careful about it.

Step 2: Procedure

connect the pin to the torch. now scrape the two free end of the wire with the knife to see the copper wire.

Step 3: Battery

connect the two end of wire to the two terminal of battery . the positive end of wire should be connected to the positive terminal of battery. also negative to negative.