Specification: Brand Best Fire Materialli-ion Model 18650-3.7-3100 Voltagestandard voltage 3.7v, full voltage 4.2v, discharge voltage 2.75v Charging time Standard charging 3.5HRS (h) for 1000m A Quick charging 2.0HRS (h) for 1600m A Maximum continuous current 25 A Protection current 25 A Internal resistancewithin 60milliohms Capacitynominal 3100 mah Positive poleflat head Service life 1300 times Dimensionsdiameter D18.1 mm * height H65.5 mm Weightabout 45g
Features:-Over charge & discharge protection circuit.-Safe & environmental friendly.-Good packing & safe shipping for the battery.-Battery appliances such as emergency lighting, portable devices, power tools. Notes:-DO NOT dispose in fire or heat.-DO NOT puncture, damage, and disassemble.-DO NOT mix fresh batteries with used batteries. Package included:2x Best Fire 3100m Ah 25A 3.7V18650 Rechargeable Battery