4-Slot USB Battery Charger, 3.7V Lithium Battery Charger for 18650, AA, AAA

4-bay USB lithium battery charger, 4.2V Output for Multiple Sizes 3.7V Rechargeable Lithium Batteries. USB power supply makes it ideal for charging batteries for flashlights, headlamps and DIY power backup systems, perfect for home use during load shedding.

Key Features

Wide Compatibility

Works for most 3.7V lithium batteries: 18650, 10400, 14500, 16340, 16650, 14650, 18350, 18500.

Independent Charging Slots

Four separate charging channels. You can charge any number of batteries from 1 to 4 with no interference.

Dual Color LED Indicator

Red light while charging; turns green once fully charged. The charger automatically cuts off power to avoid overcharging and protect battery lifespan.

Reverse Connection Protection

Power will be disconnected automatically if the battery is installed backwards, effectively avoiding damage.

Standard USB Power Supply

Input: DC 5V, 1-2A, works with regular USB wall chargers, power banks and laptop USB ports.

Output: DC 4.2V, 1000mA.

Important Note

This charger is exclusively for 3.7V lithium-ion batteries. It is not compatible with Ni-MH rechargeable batteries or ordinary dry cells.

Specifications

Color: Black

Slots: 4 independent bays

Dimensions: 82mm x 103mm x 22mm

What's in the box
1 x Lithium Battery Charger
1 x Charging cable