Question

Is potential reamins constant when battery discharges?

Answer 1

no it doesn't.......

Answer 2

●Constant power load circuits are possible, but unusual. In most cases, the battery will not supply constant power during discharge. On second thought, I use a nearly constant power load every day. It is a 12v refrigeration system. The lower the voltage, the longer the compressor runs each cycle. Averaged over a day, the power is nearly constant.