How do you calculate charge percentage in a battery with a multimeter. pls reply fast
You don't. There's nothing a multimeter can measure that can accurately tell you the charge percentage in every type of battery.
Steve
With lithium the voltage is a fairly good guide to charge state, some other types of battery you simply cannot tell from the voltage except in the most rough and ready way. What battery chemisty are you talking about?
Datasheets for batteries sometimes have a set of discharge curves, if they are flat, no dice, if they slope then you have a reasonable estimate from the voltage alone. However temperature and current drain also affect voltage.