Description: 3.7V 1800mAh Massager Polymer Lithium Battery Product No.: HG1CE4511 Cell model:  1800mAh / 3.7V Battery Specification: 1800mAh / 3.67V Nominal voltage: 3.7V         Nominal capacity:  1800mAh Charging voltage:  4.2V    Charging current: 360mA Discharge current: 360mA Maximum discharge current: 900mA Discharge cut-off voltage: 2.75V Internal resistance : ≤100mΩ Delivery voltage: 3.6-3.9V   Battery weight: 50g Product size: 35 * 34* 10mm (Max) Operating temperature: Charging temperature: 0-45°C; Discharge temperature: -20-60°C Storage temperature environment: 1month - 20-60 ° C; 3 months - 20-45 ° C; 12 months - 20-25 ° C Relative humidity: -20-25 ° C. Battery structure: Lithium Battery protection: short circuit protection, overcharge protection, overdischarge protection, overcurrent protection, etc.   Application field: personal health care, medical care,electrical  toy, photographic, consumer electronic devices powered by Lithium battery