The PB0A module can be used as-is and without utilizing its built-in I2C interface. This article discusses PB0A basic operation, wiring, and default behavior.
If you want to change any of its default settings, you can add a microcontroller later and use its I2C interface.
Before reading on, make sure you read the article about the IP5306 chip that PB0A uses, and the PB0A overview article.
Overview
By default - without adjustments made through the I2C interface - PB0A works like this:
| Feature | Description |
|---|---|
| Battery | Connects to a single LiIon cell (1S) through two through-hole pins marked with a battery symbol. The pin next to the little “pin” in this symbol (adjacent to pin K) is BAT+, the other one (adjacent to DATA and unmarked) is BAT-. |
| Charger Input | Built-in USB-C connector serves as external power source to charge the battery. This connector is uni-directional and can only be used for charging. Charging occurs at a maximum of 2.1A. |
| Power Output | Pins 5V- and 5V+ provide stabilized output power at 5V and a maximum of 2.4A (12W).- when charging, this output is powered by charger - when not charging, this output is powered by battery and internal boost controller |
| Push Button | A push button can be installed at K and 5V-. When present, a single push turns power output on manually, and a double short press turns output off manually. |
| Auto-Power | By default, power output is enabled automatically when a load is connected, and disabled automatically once the load drops <50mA for a period of >32s, so no push button (manual operation) is required |
| RGB LED | A single RGB LED indicates current operational status |
Wiring
This is the typical basic wiring:
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(content created Jul 11, 2025)