The Efest Slim K1 Battery Charger is a compact and efficient single-bay USB charger designed for lithium-ion batteries. It provides fast and stable charging at 1A while ensuring safety with multiple protection features. Equipped with intelligent detection, it automatically adjusts charging functions and safeguards against overcharging, short circuits, and reverse polarity. Ideal for users seeking a portable and reliable charging solution. Main Features Single-bay compact USB charger Fast charging mode at 1A LED charging status indicator Reverse polarity, overcharge, and short-circuit protection Auto-detect and low voltage activation functions Smooth sliding spring tested for 15,000+ uses Chromium-plated steel cathode for precise voltage and low resistance Compatible with a wide range of lithium-ion battery sizes Specifications Input: DC 5V / 1A Standby Current: <20mA Activation Current: 50mA – 100mA Charging Current: 1.0A ±10% Auto Recharge Voltage: 4.10V ±0.10V Cutoff Voltage: 4.20V ±0.05V CV Cutoff Current: <100mA Operating Temperature: 0°C – 40°C Compatible Batteries: 3.6V/3.7V Li-ion (10440–26650, including 18650, 20700, 21700, 26650) Package Includes: 1x Efest Slim K1 Battery Charger 1x USB Cable 1x User Manual
Checkout happens on the official store. This page mirrors catalog facts in plain HTML for direct reading and crawlability.
