How long the battery can store?
On the theory, when the battery stores, the total energy will loss some. Inherent in the electrochemical cell structure determines the battery capacity of inevitable loss, mainly due to the self-discharge. Usually the size of the self-discharge bears on the cathode material solubility in the electrolyte and its instability after heat (easy to self-decomposition). Rechargeable batteries self-discharge is high than a battery . The battery types, battery-month self-discharge rate is not the same. Generally 10-35% change. A battery self-discharge is significantly lower, at room temperature it does not exceed 2% per year, with the self-discharge during storage is accompanied by increase in battery internal resistance, which can cause the battery to reduce power load, while in the discharge current is larger cases, the energy loss is a very significant change.