Dual-Slot USB Smart Lithium Battery Charger, 4.2V 1000mA

This dual-slot portable smart charger provides convenient USB-powered charging for a wide range of cylindrical lithium batteries. Featuring built-in safety protection and adjustable spring-loaded electrodes, it is an essential power accessory for electronics hobbyists, makers and students working on battery-powered robotics projects.

Dual-slot versatile charging

Equipped with adjustable electrodes, this portable charger accommodates two batteries simultaneously across various sizes, including 18650, 18500, 18350, 14650, 16650, 16340, 14500 and 10440 cells.

Intelligent safety protection

The integrated smart IC features a current and Vmax detection program to safeguard cells from overcharging. Built-in output short-circuit and anti-reverse polarity protections prevent the charger from operating if a battery is inserted incorrectly or shorted.

Convenient USB power

Powered via standard 5V USB, this unit can be plugged into a computer, standard USB wall adapter or power bank for portable charging on the go. An attached cable measuring approximately 32.6 cm provides a tidy and compact setup.

Clear status indicators

Integrated LED indicators provide instant visual feedback during operation. The indicator glows red while actively charging and turns green once the battery is fully charged or when the slot is empty.