Efest Slim K1 Intelligent Charger

Sale price£7.99

Order by 3pm for next day delivery
FREE delivery on order over £25


Another powerful, compact and highly reliable product from EFest: the EFest Slim K1 Intelligent Charger. Featuring a single slot charger, Micro USB input and charging at 1A, the K1 Intelligent Charger ensures reliability and ease of use. The battery bay utilises a spring made from piano wire to provide a smooth sliding action when installing and removing batteries. As with all their devices Efest has included a vivid and intuitive LED display, which shows the user when batteries are charging and when they are fully charged with auto stop functionality.


  • Fast charging mode: 1.0A
  • Fits various 3.6V and 3.7V Li-ion batteries
  • Reverse polarity protection
  • Activation function
  • Auto-detect charging function
  • Over-charging protection
  • Short circuit protection
  • CE and RoHS certified

High Quality Spring:

  • Spring made from piano wire provides a smooth sliding action when installing and removing the battery
  • Steel cathode with low resistance and hard chromium plating achieves a more precise charging voltage


  • AC input power: AC 100~240V 50/60Hz
  • DC output power: DC 5V 1A
  • Auto cut-off voltage: 4.20+/-0.5V
  • Standby Current: <20mA
  • Auto recharge voltage: 4.10+/-0.10V
  • Storage temperagure: 40-70 C
  • DC input power: DC 5V 1A
  • 1A CC current: 1000mA+/-10%
  • CV cut-off current: ,100mA
  • Activation current: 50mA~100mA
  • Operation temperature: 0-40C


  • Slim K1 charger body
  • USB cable
  • Operation manual

Our recommendation is to take care when recharging batteries, as they can be dangerous if used incorrectly and as result we are not responsible for ANY damage caused during use. If you’re unsure whether this product is suitable for your particular set-up, just ask us!

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🇬🇧 UK Delivery Options

Orders dispatched same day if placed before 3pm Monday to Friday.

Orders after 3pm dispatched next working day. 

Excludes Saturday, Sunday & Bank Holidays.

Please Note: Delivery to Channel Islands, Isle of Man, Northern Ireland, Scottish Highlands, Islands and some remote areas may take a day longer. 

Royal Mail Free Delivery Option By Smokz Vape Store

Royal Mail Signed For 2nd Class

Online delivery confirmation
Signature on delivery
Delivered in 2/3 working days, including Saturdays
Free Over £25
UPS Express Next Day Delivery By Smokz Vape Store

UPS Express - Next Day Delivery

Next working day (Monday - Friday)
Online delivery confirmation
Signature on delivery

🇪🇺 EUROPE Delivery Options

 Please Note: we have currently suspended shipping to Europe please contact us for more information. 

🌍 Rest Of The World Delivery Options

Please Note: we have currently suspended shipping to Rest of the World please contact us for more information.


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