efest Slim K1 Charger
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Efest Slim K1 – 1 Bay USB Lithium Battery Charger
Overview
The Efest Slim K1 is a compact, single-slot USB lithium battery charger, designed for safe, efficient, and portable charging. With its intelligent charging capabilities, the Slim K1 automatically detects battery type and applies the appropriate charging current to optimize battery life and performance.
Its slim and lightweight design makes it perfect for travel, everyday use, and emergency charging needs, ensuring convenience and reliability for flashlight users, vapers, and professionals.
Key Features
✅ Wide Lithium-Ion Compatibility: Supports various 3.6V/3.7V Li-Ion/IMR/INR/ICR batteries, including 18650, 20700, 21700, and more.
✅ Portable & USB-Powered: Ideal for on-the-go charging, powered via USB cable.
✅ Smart Charging System: Automatically detects battery type and applies optimal charging current.
✅ Fast & Safe Charging: 1A charging speed for efficient battery replenishment.
✅ Multiple Safety Protections: Features overcharge, short circuit, reverse polarity, and auto-cutoff protections.
✅ LED Indicator: Displays charging status in real time.
Specifications
Specification Details Brand Efest Model Slim K1 Battery Type Supported 3.6V/3.7V Lithium-Ion (Li-Ion, IMR, INR, ICR) Compatible Battery Sizes 10440, 14500, 16340, 17340, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22650, 26500, 26650 Input Power DC 5V / 1A (USB) Charging Current 1A (Automatic Selection) Indicators LED Charging Status Display Safety Features Overcharge, Short Circuit, Reverse Polarity, Auto-Cutoff Protection Dimensions 110mm × 30mm × 30mm Weight ~50g (without battery)
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