Epoch 14500 1000mAh 10A Battery These cells are outstanding in quality and have a "Top In Class" capacity of 1,000 mAh of energy, while giving you a Maximum Continuous Discharge/Drain of 10 Amps. This cell is the best 14500 form factor size on the market today for high capacity. That's a whole lot of capacity for such limited volumetric space as this AA sized cell. This is a Lithium-Ion cell in which operates @ 4.2 volts when fully charged, unlike the 1.5 volt typical AA battery used in many workplaces and household devices and is NOT compatible as a substitute, unless your device(s) states otherwise. So please check your device(s) before buying or using this cell, otherwise your device maybe permanently inoperable as a result. This cell is fantastic in EDC sized flashlights that require 14500 form factor sized cells or flashlights that are compatible with them. Make sure you check with your Owner's Manual or your device(s) manufacture, if your not sure. Specifications: Manufacturer Epoch Batteries Model 14500-1000P Size 14500 Positive Terminal Flat Top Nominal Capacity 1000mAh Continuous Discharge Rating (max) 10A Nominal Voltage 3.7V Maximum Voltage 4.2V Discharge cut-off Voltage 2.5V Protected No Rechargeable Yes Approx. Dimensions 14.3mm x 49.8mm Approx. Weight 24g