WARNING: This product contains nicotine.
Nicotine is an addictive chemical.
Efest Slim K2 Charger

Efest Slim K2 Charger

0.00 LBS
Calculated at Checkout

Maybe the smallest, smartest dual-battery charger we've ever seen! From the trusted minds at Efest - people who obviously know batteries! - comes this slimline small form factor charger that takes all battery sizes from 10440 to 26500! And of course the all-important 18650.

It's a smart one, too, with plenty of protections built in like reverse polarity, over-charge, and short circuit. It automatically senses the battery and begins charging with the appropriate rate - and even supports 1 amp fast-charge! The piano-wire main springs are not only smooth, but they're rated for a solid 15,000 compressions - that's a lot of charged batteries!

Treat your batteries properly by charging them in a real battery charger: get the Efest Slim K2 charger today!


  • AC Input: 100 V - 240 V (50/60 Hz)
  • DC Input: 5 V (1 A)
  • DC Output: 5 V (1 A)
  • Cutoff Voltage: 4.2 V


  • 10440
  • 14500
  • 14650
  • 16340
  • 16650
  • 17650
  • 17670
  • 17350
  • 18490
  • 18500
  • 18650
  • 26650
  • 26500

What's in the Box

  • Efest Slim K2 Charger
  • Micro-USB Cable
  • User Manual

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