100% brand new high quality Li-polymer rechargeable battery Voltage: 3.7V Model: 504055 Capacity: 1300 mAh ,1C discharge Charging current: standard charging:1C, fast charging:0.5C Thickness: 5±0.5mm(0.20″) Width: 40±0.5mm (1.57″) Length: 55±0.5mm (2.17″) Composition: Lithium polymer Standard charging method: 0.5C CC (constant current) charge to 4.25V, then CV (constant voltage 4.2V) charge till charge current is less than or equal to 0.05C …