Battery Type: YCY-LP-483450 3.7V 850mAh Battery type: polymer lithium battery Combinations: Batteries + guard + plus lead Capacity: 850mAh Voltage: 3.7V Battery Thickness: 5.0 ± 0.2mm Battery width: 34.0 ± 0.2mm Battery height: 52.0 ± 0.2mm Battery weight: about 14.5g Protection IC technical parameters: Overcharge protection voltage 4.25V ± 0.05V Over-discharge protection voltage 2.7V ± 0.1V Over-current protection 3.0 ± 1.0A (2.7V ~ 4.25V) Note: The protective plate matching parameters according to customer requirements, the size of the battery capacity can be customized. Cycle life: after 500 continuous charge and discharge, the battery capacity of not less than 80% of the rated capacity. Temperature: -20 ℃ ~ 60 ℃ Product Certification: ROHS, CE, MSDS.