Efest IMR 26650 5200mAh 15A/40A IMR Flat Top Battery

Efest IMR 26650 5200mAh 15A/40A IMR Flat Top Battery


  • $ 8.50
  • 3

This is a CLEARANCE product. No additional quantity discounts will be given. Quantities ordered will not count towards quantity discounts on other products.


This is Efest's 5200 mAh 26650 battery.  Lots and lots of capacity for long usage here and a very respectable 15A continuous and 40A pulse ratings.  In our testing this is best used at 5A or less.  These batteries are discontinued and on clearance sale, so get them while they last.

  • Size: 26650 (26.22mm diameter x 65.11mm long)
  • Type: Li-Mn IMR (Rechargeable)
  • Rated Capacity: 5200mAh 
  • Max Discharge Current (Continuous):  15A
  • Max Discharge Current (Pulse):  40A
  • Voltage:  3.7V
  • Protected: No
  • Style: Flat Top
  • Weight:  100g 
  • Initial Impedance:  13Ω (plus or minus 2Ω)
  • Color: Purple
  • Rated storage temperature:  20-60 C

As always, you can trust Liion Wholesale to have tested random samples from each and every batch to make sure all the batteries are fresh and genuine.  We have an agreement with Efest themselves and buy only manufacturer direct for these so the chances of issues are small, but we test anyway.  You won't get that with most suppliers.


Warranty:  Satisfaction guaranteed, if your battery is DOA or you think there's a problem with it just let us know within 14 days of your order and we'll make it right.


Battery safety is very important.  Mistreated batteries can get extremely hot and/or vent which could cause injury.  Always follow the following rules to make sure this doesn't happen.  We are not liable for mistreated batteries.


  • Never completely discharge batteries (below 2.5V under load or 3V unloaded).
  • Charge fully (to 4.2V) before first use.
  • Never use a lot of force on the battery to install
  • Use only high quality battery chargers.
  • Do not expose to heat.
  • Do not connect the positive contact to the negative contact without an appropriate load.  
  • Be mindful of the current limits in the specification and never exceed them.
  • Never keep a spare battery loose in a pocket, purse, etc.  Always use protective cases for loose batteries.  If it shorts against a piece of metal it can be very dangerous.
  • Never charge battery 4.3V or above.
  • Do not charge unattended.
  • Do not store your li-ion batteries fully charged for an extended period of time (weeks or more)
  • If you must store battery then do it in a case or individual box in cool and dry place at approximately 3.6V - 3.7V.
  • Never try to charge or discharge li-ion batteries with battery chargers that are not made for Li-ion batteries. 


    Customer Reviews

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    • Reviews (3)
    • Questions (0)

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    Your input is very much appreciated. Share it with your friends so they can enjoy it too!
    Robert K.
    United States
    • What device/application do you use this with? Dive Lights, extream usage

    Efest Imr 26650

    Great batteries much better than others that i have used in the past. mAh apears to be correct not over stated like many of the others.

    George R.
    United States
    • What device/application do you use this with? 2,000 lumens flashlight from acebeam, ec60

    Real deal

    I have a really good charger and before I used it I did a refresh and it was just under 5400mah. Seems to last a long time and does what it's supposed to. You're not supposed to use unprotected batteries but I don't give a **** flashlight has a warranty but I haven't seen any issues with an unprotected cell


    Big cell, big power

    I primarily bought this for use in my Convoy L6 Flashlight. I am happy to report that this cell fits perfectly inside the L6's slender tube (not all cells fit, so be careful) It is able to provide many hours of run time for my flashlight. I highly recommend this battery.

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