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Efest K4 Slim USB-C Battery Charger

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EFEST K4 SLIM USB-C BATTERY CHARGER

The Efest K4 Slim provides fast USB-C charging for up to four battery cells, and is compatible with a wide range of battery sizes.

Compatibility

Compatible with Lithium IMR 3.6V/3.7V Batteries:
10440 | 14500 | 16340 | 17340
18650 | 18490 | 18500 | 18650
26500 | 26650 | 20700 | 21700

Compatible with many sizes of lithium IMR batteries.

Description

The Slim K4 will automatically charge your battery cells a few seconds after they are installed. The indicator shows blue when in standby mode or the batteries are fully charged. The indicator will show white when the battery cells are charging.

LED Indicator. Shows blue when in standby and when fully charged. White colour shows when batteries are charging.

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

Lightweight and portable. Safe charging, safe and convenient USB charger. Auto-detect charging current

Craftsmanship

The piano wire made spring ensures smooth gliding of each slot when installing and removing batteries. To achieve a more accurate charging voltage, the Slim K4 is designed with a steel cathode, with low resistance and hard chromium plating.

Piano wire spring allows for smooth gliding. Accurate charging voltage.

USB Port Design

Type-C USB helps to reduce the heat of the port effectively.

Type-C USB port 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.