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Waveshare Power Management HAT (B) for Raspberry Pi – Power Management Module
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The Waveshare Power Management HAT (B) for Raspberry Pi is a compact power management and control board designed to provide more reliable and flexible power control for Raspberry Pi projects. It uses an RP2040 dual-core Arm Cortex M0+ processor with a clock speed of up to 133 MHz and communicates with the Raspberry Pi through UART + GPIO, with a default baud rate of 115200 bps.
The board supports 5V USB power input or 3.3–4.2V through the PH2.0 connector, suitable for a 3.7V lithium battery. Its onboard PCF85063 RTC provides accurate timekeeping, while the MP28167-A buck-boost DC chip enables fast load transient response when switching between power sources.
A dedicated voltage/current monitoring circuit allows the Raspberry Pi operating voltage and current to be monitored in real time. The HAT also includes power supply anti-reverse and counter-current protection, along with a user-defined button for functions such as startup and safe shutdown.
Measuring 56.5 × 65.0 mm with 3.0 mm mounting holes, this Raspberry Pi power management HAT is well suited for embedded systems, automation projects, portable Raspberry Pi applications, and projects that require controlled power operation.
| Specification | Details |
|---|---|
| Main Controller | RP2040 |
| Communication Interface | UART + GPIO |
| Communication Baud Rate | 115200 bps by default (configurable) |
| Power Supply Interface | USB port or PH2.0 connector |
| USB Power Input Voltage | 5V |
| PH2.0 Power Input Voltage | 3.3 ~ 4.2V (3.7V lithium battery) |
| Embedded Circuits | Battery anti-reverse, counter-current protection, voltage/current monitoring |
| Dimensions | 56.5 × 65.0 mm |
| Mounting Hole Diameter | 3.0 mm |
This product comes with a 1-year manufacturer warranty from the date of purchase, covering manufacturing defects only.
The product shows signs of physical damage, mishandling, exposure to water/moisture, fire, natural calamities, unauthorized repairs, improper storage near heat or direct sunlight, or alteration in any way.
Short circuit triggered cutoff—saved my Pi! Inner box had foam. Ordering smooth. Battery fuel gauge accurate. Support confirmed reverse polarity protection. Well-designed for real-world abuse scenarios.
Three months running 24/7—zero issues. Secure packaging, no bent pins. Live chat helped choose battery. Fuel gauge via I2C works flawlessly. Support sent systemd service example. Highly recommended for critical apps.
Charges battery while powering Pi—no reboot! Packed in anti-static tray. Website had circuit diagrams. RTC keeps time during outages. Support confirmed LiFePO4 compatibility. Essential for UPS-like behavior on Pi.
Time accurate to seconds per month. Box included stacking headers. Fast shipping. Over-voltage protection saved Pi during bench test. Customer service verified I2C address conflict avoidance. Great for data loggers.
No overheating during 24hr charge cycle. Secure packaging, components undamaged. Website UX let me check stock. Simultaneous charge/power works as advertised. Tech support sent Python RTC example. Peace of mind included.
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It is Amazing and great item in this price
Veri usefull and cheap price from other shopping site, I use this module many project. Thank you robocraze
I like this motor
Excellent
good product
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