Dual 18650 3.7V Battery Charger, Universal Smart USB Charger for 3.7V 26700, 21700, 26650, and 18650 Li-ion Rechargeable Batteries

Universal Compatibility: The dual battery charger charges 3.7V Li-ion batteries (26700, 21700, 26650, 18650). Ideal for vaping devices, flashlights, and household electronics.

Two Independent Slots: The 18650 battery charger charges two batteries simultaneously or individually; no need to match sizes. Perfect for mixing 18650 and AA batteries without compromising charging speed.

Smart LCD Screen and Safe Charging: The USB battery charger with a real-time LCD screen displays voltage, charge percentage, and errors. Built-in protection against overcharging, overcurrent, and short circuits; CE/FCC certified for added peace of mind.

USB-Powered Portability: The 3.7V battery charger works with USB adapters, power banks, or laptops, making it ideal for travel.

Compact design (11 x 5.5 x 2.5 cm) that easily slips into bags, no need for bulky cords