Nitecore 14500 AA sized 3.7V 750mAh Li-ion Battery (NL147)NL147 14500Rechargeable AA BatteryNitecore has finally made their way to the battery party by offering their own batteries. These rechargeable 14500 batteries are perfect for high drain devices such as the intense LED flashlights from Nitecore, video game consoles, appliances, and more. The 14500 cells are protected from overcharging and discharging, so they can last you a long time. Being able to recharge the cells more than 500 times ensures you'll have power for all of your devices.Safety FirstYou are CoveredThe 14500 batteries are equipped at both ends with a nickel-plated S.S. protector ensuring high impact resistance, good electrical conductivity and oxidation resistance. To prevent against abrasion the cells are coated with a durable metallic film, as well as the circuit board being coated with tough plastic. The innovative anode was designed to resist high temperatures, while the microporous barrier protects the delicate internal components.Specifications: Battery Size: 14500 Battery Chemistry: Lithium Ion (Li-Ion) Nominal Voltage: 3.7V Nominal Capacity: 750 mAh Max Charging Current: 750 mA Recommended Charging Current: 350 mA Estimated Charge Cycles: 500 cycles Max Discharge Current: 3.5A Dimensions: Length - 2.03" (51.5 mm) Diameter - 0.56" (14.2 mm) Weight: 0.73 oz. (20.6 g)