State of Charge (SoC)

To get accurate readings, the battery needs to rest in the open circuit state for at least four hours; battery manufacturers recommend 24 hours for lead acid. This makes the voltage-based SoC method impractical for a battery in active duty.

See also

• Lead, Lead–acid battery, SoC, BMS, VRLA, State of Charge (SoC), Trickle charging, Peukert's law