Storage condition:

Storage in a 50% charged state;

 (Do NOT storage at fully charged state; Over long storage periods batteries should be cycled every 90 days, The method is to do a charge-discharge cycle with standard method. (Under normal storage conditions, long time storage can lead to decrease of capacity and cycle life, it will be caused more decreasing of the capacity and the cycle life if the storage condition out of the normal condition.)

Cycle life@25℃

After charged at a constant current of 0.5C until the voltage is 4.20V,a cell is charged at a constant voltage of 4.20V till charge current is less than 0.02C, and stored for 5 minutes, after that, discharged to cut-off voltage 3.0V at a constant current of 0.5C, then stored for 5 minutes. The cell shall be continuously charged and discharged for 400 times.