Applications * Lighting or other device that needs 3.7V power * Building portable power device needing high energy density and low weight Warning * CAUTION: when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled. * User should have enough knowledge on Li-Ion rechargeable batteries in charging, discharging, and assembly before use. * Put the batteries in fire-proof container * Do not put batteries on wood surface or carpet when charging * Never leave battery un-attended when charging * We are not responsible for damage of any modification of the batteries in form, shape or made into packs * We are not responsible for any damage caused by misuse or mishandling of these Li-Ion batteries Product Specifications * Capacity* Nominal 2600 mAh, Minimum 2500 mAh * Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.35V. UNIQUE INTERNAL PCB! * Dimensions: Diameter: 19 mm Height: 69.5 mm * Weight (Typical) Approx. 50 g * Nominal Voltage: Average 3.7V * Discharge Voltage: 3.0V * Internal Impedance: less or equal to 130 milliohm (with PTC) * Cycle Performance: 90% of initial capacity at 400 cycles * Cycle life: