Battery Specification 2000mah lithium ion battery 10c for power tools, full capacity, high cycling, low internal resistance and ultra-low self-discharge to meet the requirements of your power products. Capacity 2000 mAh Minimum Capacity 1980 mAh Discharge Rate 10C Nominal Voltage 3.7V Internal Resistance 17ml Cycle Life 500 Charge Voltage 4.2V0.03V Charge Current 0.5C (About 3 hours) 1C (About 2 hours) Standard Discharge Mode 0.2C Constant current discharge to 2.75V Max. Continuous Discharge Current 20000mA Operating Temperature Range Recharge (0-45C) Discharge (-20-60) Long time Storage Temperature -20~25C Initial Size Diameter:18.15+0.20mm Height:65.0-0.50mm