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- Same day dispatch Monday-Friday on orders placed before 2pm, excluding bank holidays.
- Deliveries are made weekdays and Saturday.
- Fully tracked service.
£2.99
FREE over £40
After discounts
Efest Slim K1 Battery Charger
Regular price
£7.49
Unit price
per
The Efest Slim K1 Battery Charger is a one-slot battery charger perfect for vape mods that use an external single 18650, 20700, or 21700 battery.
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Key Features
- Slim single-bay design One-slot format for straightforward, travel-friendly charging of a single removable battery
- 1A charging current Delivers up to 1000mA for reliable everyday charging of compatible Li-ion cells
- LED status indicator Built-in LED lets you monitor charging progress and confirms when the battery is full
- Auto overcharge protection Automatic stop with reverse-polarity and short-circuit safeguards built in
Charger overview
The Efest Slim K1 is a single-bay Micro-USB battery charger designed for external Li-ion vape batteries. It charges one battery at a time via a Micro-USB connection, making it a practical spare or replacement charger if you use removable cells in your vape setup. The slim, compact body keeps things simple — drop your battery in, plug it into a USB power source, and the LED tells you when it is done.
Specifications
- Output Voltage / Current
- 4.2V ± 0.05V / 1000mA ± 10%
- Charge Indicator
- LED indicator — shows charging status and turns off when full
- Overcharge Protection
- Yes — automatic overcharge protection / auto stop
- Charger Dimensions
- 105 × 22.5 × 26 mm
- Compatible Battery Size
- 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 20700, 21700, 26500, 26650
- Battery Bay Capacity
- 1 battery
- Compatible Battery Voltage
- 3.6 V, 3.7 V — Li-ion / LiMn batteries
- Charger Type
- Single-bay USB charger
What's included
- 1 x Efest Slim K1 charger
How to use
- Insert your battery Place your compatible Li-ion battery into the single bay, ensuring the positive and negative ends are correctly aligned.
- Connect to USB power Plug the included Micro-USB cable into the charger and connect the other end to a USB power source such as a wall adapter or laptop.
- Check the LED indicator The LED will light up to confirm charging is in progress — keep an eye on it to monitor the status.
- Disconnect when full The LED turns off automatically when the battery is fully charged; unplug the cable and remove your battery.
Customer Reviews
Delivery Information
UK delivery options
UK shipping only: We currently deliver to UK addresses only.
DPD Next Working Day
- Next working day delivery to select UK locations.
- Deliveries are made Monday-Friday, excluding bank holidays.
- 1-hour delivery window with live tracking.
- Signature required or safe place option.
- Orders placed before 2pm are dispatched same day.
£6.49
DPD Saturday Delivery
- Same day dispatch for orders placed before 2pm Friday.
- 1-hour delivery window with live tracking.
- Signature required or safe place option.
£10.49
Tracking: You'll receive tracking info by email or SMS once dispatched. See Royal Mail service updates or track your order.
Delivery times
Orders placed before 2pm GMT Monday-Friday, excluding bank holidays, are dispatched the same day.
- UK: 1-3 days; allow up to 14 working days.
Returns
Changed your mind? Tell us within 14 days of delivery and send unopened items back for a refund. You pay the return postage.
- Faulty products: you can reject a faulty item for a full refund within 30 days of delivery; within 6 months we'll replace it, or refund it if we can't.
- E-liquids: cannot be returned once opened or once the seal has been broken for hygiene reasons.
- Clearomizers: cannot be returned if opened, filled, or used.
To return an item, email [email protected] with your order number. Please don't post anything back until we've approved it. Full details are in our returns policy.
