A Battery Management System (BMS) and a battery management method include
a sensing unit to measure a battery terminal voltage, current, and
temperature, and a Main Control Unit (MCU) to compare the measured
battery terminal voltage, current, and temperature to a State of Charge
(SOC) reset condition and to reset a battery estimate SOC according to
the comparison result. The MCU resets the battery estimate SOC to a first
reset SOC when the SOC reset condition corresponds to a first SOC and
reset the battery estimate SOC at a second reset SOC when the SOC reset
condition corresponds to a second SOC.