Description
The Efest SLIM K4 is a compact four-bay charger that provides a simple way to keep several rechargeable lithium-ion batteries ready for use. Its USB-C power input allows it to run from a compatible USB wall adapter, laptop, power bank or other 5V USB source, making it convenient for use at home or while travelling.
Each charging bay is monitored independently, so different compatible battery sizes can be charged together. The charger automatically adjusts the available current depending on how many batteries are installed, while individual LED indicators let you quickly see when each battery is charging or fully charged.
- Charging bays: Four independently monitored battery slots.
- Charging current: Up to 1A per battery when charging one or two batteries, or 0.5A per battery when charging three or four batteries.
- Battery compatibility: Designed for rechargeable 3.6V and 3.7V lithium-ion and IMR batteries.
- Compatible sizes: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 20700, 21700, 26500 and 26650.
- LED indicators: Displays white while charging and blue when charging is complete or the charger is in standby mode.
- USB-C power input: Requires a 5V DC, 2A USB power source for full charging performance.
- Automatic charging control: Stops charging at approximately 4.20V and can restart if the battery voltage later drops to approximately 4.10V.
- Low-voltage activation: Can attempt to recover compatible deeply discharged lithium-ion batteries.
- Safety protection: Includes short-circuit, overcharge, over-discharge and overvoltage protection.
- Construction: Flame-retardant ABS housing with spring-loaded battery contacts.
- Dimensions: Approximately 107 × 117 × 29mm.
- Certifications: CE, FCC and RoHS certified.
Included: Efest SLIM K4 Charger, USB-A to USB-C Charging Cable and Instruction Manual.
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