2-Way 18650 Battery Holder

This 2-way 18650 battery holder provides a versatile, regulated power management solution housing two 18650 cells. Designed for makers, students, and hobbyists, it delivers multiple 5V, 3.3V, and standard USB outputs to power micro-devices, smart vehicles, and outdoor electronics projects.

Multiple regulated power outputs

The module features five 5V/2A ports, five 3.3V/1A ports, and a dedicated 5V USB output interface. It supports a maximum total current of up to 3A depending on the quality of the installed 18650 batteries.

Dual charging inputs and hardware protection

Recharge your cells conveniently using either the onboard Micro USB or Type-C input ports. Built-in overcharge, over-discharge, and reverse polarity protections prevent cell damage, while an acrylic bottom plate protects against accidental short circuits during placement.

Board layout and mounting dimensions

The integrated holder incorporates mounting points and a neat footprint for straightforward integration into robotics chassis and DIY enclosures.

Push-button switching and operating modes

Power the unit on with a light button press, or double-press within one second to switch it off. A dedicated DIP switch toggles between Normal mode, which powers down on low current, and Hold mode for continuous uninterrupted supply.

Four-stage LED status monitoring

Four onboard LEDs display remaining battery capacity during discharge. While charging, the indicator LEDs flash in sequence and turn solid once the cells reach full capacity.

Battery selection and operational notes

Always use 18650 batteries of the same brand with matching voltage levels for balanced operation. Running at the absolute 3A maximum limit is not recommended for sustained periods.