Efest Slim K2 Battery Charger


The Efest Slim K2 Battery Charger is available in-store and online now at VAPELAB NZ!

This portable and compact dual-bay battery charger is a great option for users of vape devices with external batteries. Featuring a micro USB input with a 1A charge rate, the Efest Slim K2 also includes a number of important safety features such as reverse polarity, short circuit and overcharge protection.

Each battery slot is monitored independently to ensure effecient charging. An LED light indicates when your battery is charging and when it is fully charged!

The Slim K2 can charge different types of 3.6V/3.7V lithium batteries commonly used in electronic cigarettes, flashlights, electric tools and more.


  • Compatible with: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 26500, 26650 (not inlcuded)
  • Portable Design with Quality Piano Strings
  • Battery Life LED Indicator Light
  • Dual Slot 5V/1A Micro USB Charger
  • AC Input Power: AC 100~240V 50/60Hz
  • DC Output Power: DC 5V 1A
  • DC Input Power: DC 5V 1A
  • 1A CC Current: 1000mA (+/-10%)
  • Auto Cut-Off Voltage: 4.20 (+/-0.05V)
  • CV Cut-Off Current: <100mA
  • Standby Current: <20mA
  • Activation Current: 50mA~100mA
  • Auto Recharge Voltage: 4.10 (+/-0.10V)
  • Operation Temperature: 0C ~ 40C
  • Storage Temperature: -40C ~ 70C
In The Box

1x Efest Slim K2 Battery Charger
1x Micro USB Cable

Customer Reviews

Based on 2 reviews
Mike R.
Does the job

Great unit that so far has charged a bit quicker than anticipated.

Great to know, thanks for leaving your review Mike!

Kyle F.
Great charger

Works great!

Thanks for the positive feedback!