Efest Slim K4 USB-C Battery Charger

The Efest Slim K4 stands at the forefront of battery charging technology, offering a versatile and speedy charging solution for a wide array of Lithium IMR batteries. Its compact design, coupled with the advanced USB-C connectivity, ensures your batteries are charged efficiently and safely, making it an indispensable accessory for vaping enthusiasts.

Key Compatibility:

The Efest Slim K4 is engineered to be universally compatible with Lithium IMR 3.6V/3.7V batteries, accommodating sizes including but not limited to:

• 10440
• 14500
• 16340
• 17340
• 18650
• 18490
• 18500
• 26500
• 26650
• 20700
• 21700

Advanced Features:

• Adaptive Charging: Automatically adjusts charging current based on the number of batteries, supporting 1 x 1.0A, 2 x 1.0A, 3 x 0.5A, or 4 x 0.5A configurations.
• Independent Monitoring: Each slot is independently monitored and charged, ensuring optimal charging efficiency.
• Intelligent Protections: Equipped with six layers of protection including short circuit, overcharging, and reverse polarity safeguards for peace of mind.
• Activation Recovery: Features a low voltage smart activation recovery function to rejuvenate over-discharged batteries.
• Portable Design: Its super lightweight build makes it easy to carry, perfect for on-the-go vaping needs.

Design and Build:

• High-Quality Springs: Utilizes piano wire springs for smooth battery installation and removal.
• Precision Charging: Steel cathode with hard chromium plating guarantees precise charging voltage.
• Type-C USB Port: Minimizes heat generation for safer charging sessions.

Safety First:

Efest prioritises your safety with the Slim K4, integrating:

• Short circuit protection
• Automatic overcharging and over-discharge protection
• Reverse polarity protection
• Zero voltage activation recovery function
• Double-layered hardware and software protection

Certifications:

Proudly bearing global certifications including FCC, CE, and RoHS, the Efest Slim K4 USB-C Battery Charger is backed by comprehensive insurance and technical support.

Packaging Contents:

• Efest Slim K4 Battery Charger
• Warranty Card
• User Manual

Specifications:

• Input: DC 5V 2A
• Compatible With: A broad spectrum of Li-ion batteries from 10440 up to 26650 and 26500

Product Highlights:

• 4 Bay Battery Charger with multiple charging speeds for efficiency
• Automatically ceases charging upon completion
• Designed with reverse polarity protection for added safety