Free Royal Mail Tracked 24 Hour Delivery on all orders over £20

  • Superfast UK Delivery

    Orders over £20 qualify for FREE delivery

  • Excellent Ratings

    4.9/5 on TrustPilot over 5,000 reviews

  • PayPal Accepted

    Alongside all major credit cards

  • Quality Products

    From official manufacturers & distributors

Efest K1 Slim Battery Charger

£799
Tax included Shipping calculated at checkout.
Earn Points on this purchase. Learn more

The EFest K1 Slim Battery Charger is a single cell battery charger that is compatible with a range of cell sizes. The slim portable design makes it easy to take this charger on the go with you and features an LED charge indicator light, so you can see charge progression. This charger is powered by a MicroUSB and has 1A fast charging mode.

  • Input: AC 100V-240V 50/60Hz
  • Standby Current: <20mA
  • Activation Current: 50mA - 100mA
  • Compatible With: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 26500, 26650
  • Auto Cutoff Voltage: 4.20V ± 0.05V
  • Auto Recharge Voltage 4.10V ± 0.10V
  • Operation Temperature: 0°C ~ 40°C


Age Verification

1Account Age Verification

To purchase products from our store, you must be over the age of 18. To ensure you're over the age of 18, we run an effective and monitored age verification process, provided by 1Account. We do not sell age restricted products to persons under the age of 18. By purchasing age restricted products, you hereby consent to the processing of your personal data for age verification purposes.

Why Do We Need To Verify Your Age?

The law in the United Kingdom states that tobacco and nicotine inhalation products cannot be sold to persons under the age of 18. To ensure that we're compliant with the law, we have to carry out some form of age check and we can only do this during the checkout process. Much like buying from a physical location, you would need to provide identification if you looked under age, but because we cannot see who you are, we have to ID everyone.

If you do not verify your age, we cannot legally dispatch your order, so after 5 days (this is when the age verification link expires) we will refund your order, unless requested beforehand.

Delivery Options

Royal Mail 24 Delivery

£3.80 or Free on Orders Over £20

Royal Mail 24 Delivery is a 1 - 3 working day service. Orders are dispatched same day Monday - Friday on orders place before 4pm (Excluding Bank Holidays and Holidays.)

Royal Mail aim to deliver these packages within 24 hours, however remote areas and unforeseen circumstances means delivery may take longer.


Royal Mail Special Delivery (Only Guaranteed by 1pm Mon - Fri)

£6.70 or Free on Orders Over £100

Next Day delivery, guaranteed by 1pm, Monday to Friday only (excluding Bank Holidays and Holidays.) This is a fully tracked service.


Royal Mail Saturday Guaranteed Special Delivery

£6.70

Guaranteed Saturday delivery, order before 4pm on Friday to ensure prompt delivery.

The Efest Slim K1 Charger is a single slot charger with Micro USB input and charges at 1A. The LED indicates when your battery is charging and when the battery is fully charged. The Efest Slim K1 Charger features reverse polarity, short circuit, overcharge protection and many more safety features. The Efest Slim K1 Charger can charge different types of 3.6V/3.7V lithium batteries commonly used in electronic cigarettes, flash lights, electric tools, and more.

Features and Specs:

  • Compatible with: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 26500, 26650
  • 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
Package Contents:
  • 1 x Efest Slim K1 Charger
  • 1 x Micro USB Cable

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Efest K1 Slim Battery Charger
Efest

Efest K1 Slim Battery Charger

£799

The Efest Slim K1 Charger is a single slot charger with Micro USB input and charges at 1A. The LED indicates when your battery is charging and when the battery is fully charged. The Efest Slim K1 Charger features reverse polarity, short circuit, overcharge protection and many more safety features. The Efest Slim K1 Charger can charge different types of 3.6V/3.7V lithium batteries commonly used in electronic cigarettes, flash lights, electric tools, and more.

Features and Specs:

Package Contents:
View product