Pair of Efest IMR18650 Batteries

Product no.: B63-24

In stock


Delivery restrictions apply – please see the product description for details


Pair of Efest IMR18650 batteries in case


Pair of Efest IMR 18650 20A batteries packaged in a carry case for safe transport of your spare(s) in your pocket or bag. Safer chemistry means reduced risk of venting with flame or explosion. 

Suitable for use with regulated devices.


  • Nominal Voltage : 3.7V
  • Capacity : 3000mAh
  • Lowest Discharge Voltage: 2.50V
  • Max charge current: 4A
  • Standard Charge : 2A
  • Max. continuous discharge rate : 20A
  • Internal resistance 20mΩ
  • Operating Discharge Temperature : -20 - 75 Degree Celsius
  • Dimensions: 18.5 x 65.2 mm (+/- 0.2mm)

Attention: 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 some chargers. Please check the voltage of them using a volt meter 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 pop them or making them leak. DO NOT use the charger if it seems to overcharge IMR cells. They should never be discharged below 2.5 volts or cycle life/performance will be reduced.


Please read Lithium battery safety information before charging/using lithium batteries.

This product is only offered for sale within the UK due to shipping restrictions.




Additional product information

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