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  • eFest eFest Slim K1 (Single) Battery Charger
  • eFest eFest Slim K1 (Single) Battery Charger

eFest Slim K1 (Single) Battery Charger

Excl. tax

Single Bay Charger for Rechargeable Lithium Ion Batteries
Will fit 18650, 20700, and 21700
Battery NOT Included

The rating of this product is 0 out of 5

In stock (Delivery timeframe:2-4 Days)


  • 1 Bay Compact USB Charger
  • Single charging speed - 1A x 1
  • LED charging indicator
  • Compatible with 18650, 20700, 21700, 26650 and more
  • Reverse polarity protection protects if cell is entered in the wrong way


  • Efest Slim K1 Battery Charger
  • USB Cable
  • User Manual


  • Fast Charging Mode: 1.0A
  • Auto Detect Charging Function
  • Low Voltage Activation Function
  • Short Circuit Protection
  • Reverse Polarity Protection
  • Over Charging Protection
  • Piano Wire Spring Provides Smooth Sliding Action - 15000+ Tensile Test
  • Chromium Plated Steel Cathode Insures Low Resistance While Achieving A More Precise Charging Voltage


Input: DC 5V 1A
Standby Current: <20mA
Activation Current: 50mA - 100mA
1.0A CC Current: 1000mA ± 10%
Auto Recharge Voltage: 4.10V ± 0.10V
Auto Cutoff Voltage: 4.20V ± 0.05V
CV Cutoff Current: <100mA
Operation Temperature: 0°C ~ 40°C


3.6V/3.7V Lithium-ion Batteries
Most Cylindrical Lithium-ion Batteries Ranging In Size From 10440 To 26650
battery charger / efest
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