There is no 5V Li-po batteries, LiFePO4 is 3.2V. Nominal per-cell voltage of a battery depends on anode/cathode pairs. Can be tweaked, state of charge dependent

There is no 5V Li-po batteries, LiFePO4 is 3.2V. Nominal per-cell voltage of a battery depends on anode/cathode pairs. Can be tweaked, state of charge dependent, but isn't an adjustable parameter.