Let´s make 3V Battery!!!
What do we need?
2x AA Battery
1x Led of any colour
and a tape
Step 1: Stooping the Pin.
Take your pin and your pliers and make a bend on the end of pin.
Step 2: Taping Up the Batteries.
Step 3: 1.5+1.5=3
Put the bent pin on the batteries and cover it by tape.
Step 4: That´s Finish!!!
When the Led lights, all is good.