problem

first, i'm using battery non-rechargeable to test the circuit. then, i change into rechargeable battery. when going to buy the battery, the 6v was to difficult until one shop have it. but it not Ni-MH but Ni -cd.

because of i'm want to charge to become high voltage after using it. using the solar is to slow. then, i want make it faster by using the charger of 6v. but it is not suitable and make it broken and burn it.

after charging:

p/s: i need to find another rechargeable battery. it is must be Ni-MH battery 6V because the Ni-cd too low their current.