Sanyo KR1500AUL Cadnica Battery • Standard Charging Current: 150mA • Fast Charging Time: 2300mA • Standard Charge Time: 14 to 16 Hrs. • Fast Charging Time: 1 Hr • Ambient Temperature (Charging): 0 to +45 degree C • Ambient Temperature (Discharge): -20 to +60 degree C • Ambient Temperature (Storage): -30 to +50 degree C