WARNING: This product contains nicotine. Nicotine is an addictive chemical.


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Efest Slim K1 Battery Charger

An clever battery charger that can charge a single cell is the Efest Slim K1 Single Bay Battery Charger. For a smooth sliding movement when adding and removing batteries, the battery bay uses a piano wire spring. As with other of their products, Efest offers a bright and user-friendly LED display that lets users know when their batteries are charging and when they are fully charged with an auto-stop feature. Reverse polarity, short circuit, overcharge protection, and many more safety measures are included in the Efest Slim K1 Charger. Look through our selection of rechargeable batteries and get vaping!

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Efest Slim K2 Battery Charger
Efest LUC V4 Smart Charger


  •  Portable Design with Quality Piano Strings
  •  Battery Life LED Indicator Light
  •  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


  •  1 Efest Slim K1 Charger
  •  1 Micro USB Cable