Efest 30amp 18650 IMR Flat Top


Efest 30amp 18650 IMR Flat Top

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Efest 30amp 18650 IMR Flat Top

Efest 30amp 18650 IMR Flat Top is a 3.7V Li-Mn battery with 1600mAh capacity. This battery can be used in devices that requires an 18650 cell. It has a high discharge rate at 30 amps which is great especially when using sub ohm coils. You may want to purchase a safety fuse to use with a mechanical Mod.   Price is for 1 battery.


Copied from Efest site:


Weight: 50g
Length: 64.91 mm
Diamter: 18.34 mm

Typical Capacity: 1600mAh
Min capacity:      1600mAh
Max discharge current : 30A (20C)

Quick discharge current
1600mA (10C)     cycle life:  500 times

Charge cut-off voltage:     4.2V ± 0.5V

Charge cut-off current:     0.01C 5A (at CV mode)
Initial Impedance:     Max: 18mΩ     Discharge cut-off voltage:   3.0V
Temperature:     Discharge temperature range:  -10°C—60°C
Shcarge temperature range:  0°C—40°C

1 year: -20°C—25°C
3 months: -20°C—45°C
1 month: -20°C—60°C


Please note that due to their inherent safety, IMR cells do not have a protection circuit built in. They should never be discharged below 2.5 volts or cycle life/performance will be reduced. Maximum charge voltage is 4.25 volts. 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 18650 IMR battery right out of the charger to make sure that they are NOT 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.


– Do not over-discharge/overcharge
– Recharge empty batteries ( resting voltage ~3.6V ) as soon as possible. Leaving LiIon batteries in discharged state will incur irreversible damage ( capacity / cycle loss )
– Do not short circuit ( will release tremendous current )
– Do not dispose of in fire.


Please refer to the Battery Use and Safety” link on Home Page of this website for further knowledge or visit batteryuniversity.com to learn more. Batteries and chargers on this website are to be used at your own risk!


Additional information

Dimensions 64.91 × 18.34 mm


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