12000mah power bank for samsung s2 Efficient lithium betteris over charge and discharge ... 0.75ACharging Time:0-6 hoursWorking Temperature:0°C-40°CWorking Humidity:≤90%Storage Temperature:-10°C -25°CStorage ... short circuit, over charge/discharge;Attached Connectors:6 connectors for Samsung, Motorola, Nokia, Sony Ericsson, HTC, iPhone and, etc ... Product Color:Black;White 12000mah power bank for samsung s2