WARNING: These products contain Nicotine. Nicotine is an addictive chemical.

Cart 0
Efest IMR 21700 3700mAh 35A Battery

Efest IMR 21700 3700mAh 35A Battery


  • 14.99
  • Save $ 5.00

Efest (Purple) IMR 21700 (3700mAh) 35A 3.7v Battery Flat-Top 
The Efest (Purple) IMR 21700 (3700mAh) 35A 3.7v Battery Flat-Top is 100% authentic! This high drain rechargeable battery has the capacity of 3700mAh and has the powerful chemical makeup of lithium-ion. This battery also works great with 21700 mechanical mods.

This battery is sold separately as an individual unit.

Package Contents:

  • 1 x Efest (Purple) IMR 21700 (3700mAh) 35A 3.7v Battery Flat-Top

Product Specifications:

  • Model: IMR 21700
  • Rated Capacity: 3700mAh
  • Nominal Voltage: 3.7V
  • Voltage at end of discharging: 2.5V
  • Max Charging Current: 4A
  • Standard Charge: 2A
  • Discharging Current: 35A
  • Charging Temp Range 0C-45C
  • Discharging Temperature Range: -2C - 75C
  • Inner Resistance: 20M OHM 
  • Cell Size: 21 (+-0.2) mm x 7 0 (+- 0.2) mm

Usage Specifications:

  • Fully charge before initial use
  • Always charge battery in/on a fireproof surface
  • Never leave charging batteries unattended.
  • To avoid short circuits, keep this battery away from metal objects (e.g. coins, keys, jewelry)
  • Keep the battery in its case or any other insulated material
  • To avoid shortening your battery’s life, do not overcharge it-- doing so may result in the battery popping or leaking
  • Do not use the battery if there are signs of previous usage
  • Do not dispose battery with the use of fire
  • Stacking more than one battery at a time may result in explosion.
  • Never short the battery. Connect the positive and negative sizes.
  • Do not use adapters with these batteries.
  • Use special caution when working with Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable cells.

We Also Recommend