Efest Slim K4 Four-Bay Battery Charger

Efest Slim K4 four-battery charger is a charger dedicated to four cells at the same time, with a Type-C port, smart protection chip, and practical design for use with a wide range of rechargeable battery sizes. This model combines automatic charging, LED indicators, and basic protection features that help organize the charging process clearly and safely for daily use in the vaping environment. Overview of the charger The Efest Slim K4 Charger features a flame-retardant ABS body, with 4 independent charging ports, and an automatic battery detection function during charging. It also supports automatic stop when charging is complete, and includes activation recovery functions for low-voltage and 0V batteries within a dual device and software protection system. Key features 4 charging ports for multiple batteries in one device Type-C port for input charging LED indicators to monitor charging status Built-in smart protection chips Automatic stop charging when complete Protection from overcharge, over-discharge, short circuit, and reverse polarity Supports activation recovery for low-voltage and 0V batteries Specifications and compatibility Input: DC 5V / 1A Standard mode: 2000mA × 1 max Compatibility: 10440, 14500, 16340, 17340, 18350, 18500, 18650, 26500, 26650, 20700, 21700 Certifications: FCC, RoHS, CE Contents: EFEST SLIM K4 charger and user manual Who is this charger suitable for? This charger is suitable for those who use multiple sizes of vaping batteries and need a four-battery charger that combines organization, charge monitoring, and USB-C port support. It is also a practical choice for those who prefer to charge more than one battery in one device instead of using separate chargers. Products you might be interested in E8 Case protective cover Voopoo Uforce-X Nano Tank Frequently Asked Questions Does the charger support more than one battery size? Yes, it supports a wide range of common rechargeable battery sizes such as 18650, 21700, and others. Does it have protection during charging? Yes, it includes protection from overcharge, over-discharge, short circuit, and reverse polarity. What type of power input does it use? It uses a Type-C port with DC 5V / 1A input.