Efest K1 Slim Charger

Efest K1 Slim Charger


  • $6.99
Shipping calculated at checkout.

The Efest K1 Slim charger is a lightweight micro-USB powered li-ion charger. The K1 charges at up to 1A depending on the power supplied to the charger. A white LED indicates the battery is charging while a blue LED indicates a finished charge. Great option for charging your batteries at home on the go.


  • Single 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
  • (***Batteries Not Included***)
  • Compatible with 10440/14500/14650/16340/16650/17650/17670/17350/18490/18500/18650/26650/26500 cells
  • Features over-current, over-voltage, short-circuit, and reverse polarity protection
  • Piano Wire Spring Provides Smooth Sliding Action - 15,000+ Tensile Test
  • Chromium Plated Steel Cathode Insures Low Resistance While Achieving A More Precise Charging Voltage
  • DC Input: 5V 1A
  • Output current: 1A
  • Auto cut-off voltage: 4.2V+-0.05V
  • Auto recharge voltage: 4.10+-0.1V


  • 1 K1 Slim Charger
  • 1 Micro USB Cable