Efest K4 Slim USB-C Battery Charger
Description
EFEST K4 SLIM BATTERY CHARGER
The Efest K4 Slim provides fast USB-C charging for up to four battery cells and is compatible with various battery sizes.
Compatibility
Compatible with Lithium IMR 3.6V/3.7V Batteries:
10440 | 14500 | 16340 | 17340
18650 | 18490 | 18500 | 18650
26500 | 26650 | 20700 | 21700
10440 | 14500 | 16340 | 17340
18650 | 18490 | 18500 | 18650
26500 | 26650 | 20700 | 21700
Description
The Slim K4 will charge your battery cells a few seconds after installation. The indicator shows blue when in standby mode or when the batteries are fully charged. The indicator will show white when the battery cells are set.
Features
Auto-detect charging current: 1 x 1.0A / 2 x 1.0A / 3 x 0.5A / 4 x 0.5A
Safe charging mode: CC & CV | Safe and convenient USB charger (5V 2A)
Monitors and charges each slot independently | Low voltage smart activation recovery function
Super lightweight and portable
Safe charging mode: CC & CV | Safe and convenient USB charger (5V 2A)
Monitors and charges each slot independently | Low voltage smart activation recovery function
Super lightweight and portable
Craftsmanship
The piano wire-made spring ensures smooth gliding of each slot when installing and removing batteries. The Slim K4 is designed with a steel cathode, low resistance and hard chromium plating to achieve a more accurate charging voltage.
USB Port Design
Type-C USB helps to reduce the heat of the port effectively.
Six Protections
The built-in intelligent chip comes with six protections.
Short circuit protection | Automatic overcharging protection
Automatic over-discharge protection | Reverse polarity protection
0V activation recovery function | Hardware and software double protection.
Short circuit protection | Automatic overcharging protection
Automatic over-discharge protection | Reverse polarity protection
0V activation recovery function | Hardware and software double protection.
Certifications
Global insurance technical support with FCC, CE, and RoHS certification
Package
Please see our comprehensive guide to battery safety.
Delivery
Royal Mail Tracked 24
- Order before 9 pm for same-day dispatch and next-day delivery
- Deliveries are made 7 days a week (excluding Sunday exceptions & bank holidays)
- Tracked service with a 2 hour delivery window
- Safe place option
- FREE on orders over £20
- £2.99 for orders under £20
DPD Local
- Order before 9 pm for same-day dispatch and next-day delivery
- Deliveries are made 7 days a week (excluding bank holidays)
- Tracked service with a 1 hour delivery window
- Signature required, or safe place option and collection point
- £4.99 for orders under £20 (£6.99 at weekends)
- £3.99 for orders between £20 and £59.99 (£5.99 at weekends)
- £1.99 for orders over £60 (£3.99 at weekends)
- FREE for orders over £100 (£150 at weekends)
DPD Local Pickup
- Order before 9 pm for same-day dispatch and next-day delivery
- Deliveries are made 7 days a week (excluding bank holidays)
- Tracked service with a 1 hour delivery window
- Signature required, or safe place option and collection point
- £4.99 for orders under £20 (£6.99 at weekends)
- £3.99 for orders between £20 and £59.99 (£5.99 at weekends)
- £1.99 for orders over £60 (£3.99 at weekends)
Royal Mail Special Delivery
- Order before 9 pm for same-day dispatch and next-day delivery
- Deliveries are made Monday to Saturday (excluding bank holidays)
- Tracked service with a 1 hour delivery window
- Signature required
- £7.99 for orders under £20
- £6.99 for orders between £20 and £59.99
- £5.99 for orders between £60 and £99.99
- £4.99 for orders over £100
All orders are sent in discreet packaging.
Please view our delivery page for further information.
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