System and method for correcting SOC of battery

A system for correcting a state-of-charging (SOC) of a battery, the system comprising:

• an SOC measuring unit configured to measure an SOC value of the battery;
• a storage unit configured to store preset operation ranges to determine whether charging/discharging of the battery is compensated;
• a determining unit configured to determine an operation range corresponding to the SOC value of the battery among the preset operation ranges, the determined operation range being a range on which a dead band in charging/discharging directions is based, a frequency correction signal range corresponding to a range of the dead band in charging/discharging directions being used to adjust an amount of a power signal applied to the battery;
• and
• an SOC correcting unit configured to selectively adjust the charging/discharging directions and charging/discharging power according to the range of the dead band and the frequency correction signal range, based on the operation range determined in the determining unit to correct the SOC value of the battery.