Nitecore 14500 750mAh USB Rechargeable Li-ion Battery NL1475R Features: Integrated micro-USB charging port Compatible with traditional battery chargers Pressure relief valve protection for rapid temperature increases Microporous barrier to protect internal components High performance protected circuit automatically protects against overcharge, over discharge and short-circuiting Nickel-plated stainless steel protectors Certified by International Standards Battery Size: 14500 Battery Chemistry: Lithium Ion (Li-Ion) Nominal Voltage: 3.6V Nominal Capacity: 750mAh Estimated Charge Cycles: 500 cycles Max Output: 2A Dimensions: Length 49.50mm, Diameter 14.20mm Weight: 18.6g Warranty : 1 year warranty from the date of purchase. Overdischarging or battery leakage is not covered nor is fast draining of battery while using. Please keep the voltage of all Li-Ion batteries above 3.8V for healthy storage. Recharge as soon as possible when you have run them down. Storing a depleted ( less than 3.2V open voltage ) battery may damage/ shorten life/cycle permanently. Package Includes: 1 x Nitecore 14500 750mAh USB Rechargeable Li-ion Battery NL1475R