METHOD FOR BATTERY MANAGEMENT AND BATTERY SYSTEM PROVIDING SAME

The present invention relates to a battery management method and a battery system for provides the same. An embodiment of the present invention provides a battery system including: a battery; and a battery management system (BMS) configured to control charging of the battery depending on a normal mode using a first battery capacity between a first lower limit state of charge (SOC) and a first upper limit SOC or an eco-friendly mode using a second battery capacity between a second lower limit SOC and a second upper limit SOC, wherein the first lower limit SOC is smaller than the second lower limit SOC, and the first upper limit SOC is greater than the second upper limit SOC.