Vehicle and method for managing battery thereof

A method for managing a battery of a vehicle including a battery supplying electrical energy, comprising:

• detecting, by a controller, deterioration severity of the battery;
• determining, by the controller, whether the deterioration severity is equal to or greater than a reference value;
• determining, by the controller, a cause of deterioration of the battery when the deterioration severity is equal to or greater than the reference value;
• reducing, by the controller, a SOC variance corresponding to a difference between an upper limit SOC and a lower limit SOC of the battery according to the determined cause of deterioration of the battery, wherein the cause of deterioration is due to vehicle driving;
• and
• changing, by the controller, a central SOC between the upper limit SOC and the lower limit SOC of the battery according to the determined cause of deterioration of the battery, wherein the cause of deterioration is due to the vehicle being left unattended,
• wherein the controller determines whether the cause of deterioration of the battery is due to vehicle driving or a state of the vehicle left unattended.