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Efest Green 26650 IMR 4200mAh Flat Top Battery - 20A / 50A

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$14.99 (You save $4.00)
Ships same day if order placed before 2:00 P.M. EST (except Sundays and Holidays)

    Efest Green 26650 IMR 4200mAh Flat Top Battery - 20A Continuous / 50A Pulse

    The Efest Green 26650 IMR 4200mAh Flat Top Battery is one of the best batteries for long lasting battery power. Safe chemistry LiMN 3.7V rechargeable high drain batteries do not require a protection circuit and they also have a reduced risk of venting with flame or explosion. Not only are these the safest batteries available, they also perform better for a longer period of time. Can be charged with any Li-Ion battery charger with 4.2V output however, for best battery life we recommend charging with a Smart / Intelligent Charger.

    Price is for one (1) battery.

    IMPORTANT NOTE: These IMR cells have much lower internal resistance than regular Li-Ion 3.7V cells and they may end up with a higher ending voltage when charged in certain chargers (especially older versioins of the WF-139 charger).  Please check the voltage of your 26650 IMR battery right out of the charger with a Multimeter to see if they are above 4.20V when fully charged with your charger.  These batteries should never be discharged below 2.5 volts or the life cycle and performance will be reduced.  Overcharging above 4.25V may shorten life/cycles. Batteries that read above 4.5 volts may be damaged and we recommend to discontinue use of the charger.  DO NOT use the charger if it is overcharging IMR cells.  For best results and battery life expectancy, we highly recommend using an Intelligent Charger such as our Efest Bio Charger or LUC LCD Chargers for charging all your Li-Ion type batteries.



    • Do not over-discharge/overcharge
    • Recharge empty batteries (resting voltage ~ 3.6V) as soon as possible.
    • Leaving Li-Ion 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
    • Always remove battery from charger when fully charged


    Product Specifications

    • Nominal Voltage: 3.7V
    • Battery Capacity: 4200mAh
    • Lowest Discharge Voltage: 2.50V
    • Standard Charge: CC/CV (max charging rate 2A)
    • Maximum Pulse Discharge: 50A
    • Maximum Continuous Discharge: 20A
    • Battery Top: Flat Top
    • Battery Type: IMR ( LiMn )
    • Dimensions: (L) 66.67mm | (D) 26.21mm

    Write your own product review

    1. Great battery for 26650 mods!  star rating

      Posted by Mark Timblin on 19th Mar 2016

      I bought this battery to go with my Cloupor T6 100 watt 26650 box mod. I must say that this battery works extremely well, I get long life from this battery, I mean like a days worth, almost a day and a half worth of battery life. I am a heavy vaper, so for a battery to last me a day/day and a half is top notch in my book.

      I do have an Efest Purple IMR 26650 battery which is rated at 3500 mAh 3.7 volts with a discharge rate of 32/64A which is not quite up to the 4200 mAh 3.7 volts and 32/64A like the one I am reviewing.

      I do like this battery so much that I am going to buy another just so I have 2 batteries each for both my 26650 box mods, my T6 Cloupor and my Encom 80 watt box mod. Thank you all very much for taking the time to read my review it is greatly appreciated and....VAPE ON!

    30-Day Limited Warranty. See warranty section for details.

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