Battery Type: Primary Lithium Battery Nominal Voltage: 3.6V Nominal Capacity: 4000mAh Model: ER18505HC Battery Brand: VCELL/OEM Discharge Cut-Off voltage: 2.0V Maximum Continuous Discharge Current: 200mA Peak Discharge Current: 400mA Work Temperature: 60~85 Size: 18.5*50.5mm Max Weight: 28gApprox Self-Discharge Rate: 10Years Application: Gas Meter, Water Meter, lot System, Medical Device, Calculator, etc