Fyte IMR Battery: 18350, 18490, 18650, 14500by Fyte $7.95
Fyte 18350: 700mah
Fyte 18490: 1100 mah
Fyte 18650: 2000 mah
Fyte 14500: 700mah
•Nominal Working Voltage: Average 3.7V
•Peak Voltage: 4.2V
•Discharge Cut-off Voltage: 2.50V
•Cycle Performance: 500 cycles
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 version WF-139 charger ). Please check the voltage of the battery right out of the charger to see if they are above 4.20V when fully charged with your charger. 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.
Warning - Never store batteries in your pocket with other metal objects like coins or keys Or even other batteries. This can short out the battery and cause a hazard. Batteries should be stored in a safe area away from metal objects or in a plastic storage container.