18350, 3.7 volt, IMR Li-Mn battery made by Efest. The capacity of this battery is 800 mAh. This battery can be used in torches that require an 18350 cell like the Nitecore EC11. This IMR cell has a high discharge rate.
Nominal Voltage: 3.7v
Battery Model: 18350v Capacity: 800mAh
Positive: Nipple Top
Cycle Life: 300 Cycles
Dimensions: 34.73mm (L) x 18.10mm (D)
NOTE:These IMR cells have much lower internal resistance than regular LiIon 3.7V cells and they may end up with a higher ending voltage when charged in certain chargers ( especially older versions of the WF-139 charger ). Please check the voltage of your 18350 IMR battery right out of the charger to see if they are above 4.20V when fully charged with your charger. You can do this with a Multimeter Overcharging above 4.25V may shorten life/cycles. Above 4.50V may even damage them. DO NOT use the charger if it is overcharging IMR cells.