Why Are Rechargeable Batteries 1.2 V And Not 1.5 V. The typical discharge level for rechargeable batteries is 10 to 11V and 11V is when I try to recharge my batteries both NiMH and NiZn. When the voltage requirement refers to just one battery and to a not really demanding load such as a tungsten lamp.
I have noticed that AA or AAA in that case rechargeable batteries are always of nominal 12V while non-rechargeable have nominal voltage of 15V. If you have a device that doesnt perform well with the lower 12 volt supply then this rechargeable Lithium-Ion AA technology may be a welcome replacement for disposable conventional 15 volt cells. In the end an alkaline battery only benefits from 15 V voltage at the beginning of its discharge.
These are resting voltages for NiMH cells.
I have noticed that AA or AAA in that case rechargeable batteries are always of nominal 12V while non-rechargeable have nominal voltage of 15V. At moderate to high current drains NiMH cells will work much better in these devices than alkaline cells delivering both a higher voltage during discharge and greater total energy. Theres an interesting wrinkle to this problem. 44 out of 5 stars.
