How Many Volts In A Phone Battery. Our battery bank has a 400 amphour capacity and runs at 12 volts. If youre shopping for a new charger and the wattage isnt listed you can also calculate it with the formula.

96V Ni-MH Battery 12V Ni-MH voltage 8 Cells. Most battery circuits stop at 2730 Vcell. If not you can calculate it as Volts x amp hours Ah.
Battery capacity and voltage rating.
So the ideal power used would be 240 watts for the two batteries. The car has 12 volts so the cigarette lighter adapter simply reduces the 12 volts to 5 volts and feeds my cell phone in the car. A typical smartphone battery has a capacity of ABOUT 1500 mAh. A 12 volt 40 amp current will recharge our battery in around 10 hours.
