Note: Batteries not included. You can buy your original lithium batteries here.

The Efest Slim K2 is a dual-slot charger ideal for those seeking efficiency and portability. With an ergonomic design that incorporates high-precision springs, this model ensures stable contact and long life. Equipped with intuitive LED indicators, it offers an intelligent solution to charge your batteries safely and practically.

Technical Specifications

• Brand: Efest
• Certification: Product certified CE and RoHS.
• Number of slots: 2 independent charging channels.
• Charging current: 1A (1000mA).
• Input: Micro USB (DC 5V 1A).
• Compatibility: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 26500, 26650.
• Interface: LED indicator light to monitor charging.

Usage Instructions

1. Connect the Micro USB cable to a compatible power source (5V 1A).
2. Insert the batteries into the slots, observing the correct polarity indicated on the device.
3. The LED indicator will light up to signal the charging process.
4. Disconnect the charger and remove the batteries after the charging cycle is complete.

In case of abnormal behavior, stop using and get in touch with our support.

• ELECTRICAL SAFETY NOTICE: Certified with CE and RoHS protections against overcurrent, short circuit, and polarity reversal. Never leave batteries charging unattended or on flammable surfaces. For a safe experience, consult our Beginners FAQ.