Why Do You Need a Raspberry Pi UPS?

Sudden power loss can corrupt your SD card and ruin hours of work. A Raspberry Pi UPS (Uninterruptible Power Supply) acts as a safety net, instantly switching to battery power when the mains fail. SunFounder’s UPS HATs connect directly to the GPIO pins, offering a compact and cable-free solution. Whether you are building a solar-powered weather station or a home media server, a Raspi UPS ensures continuous operation and protects your hardware from voltage spikes.

Key Features of Our UPS Modules

○ Seamless Switching: Zero-delay switching between external power and battery backup ensures your Pi never reboots unexpectedly.
○ Power Management: Monitor battery levels, voltage, and current in real-time via I2C, allowing you to create custom scripts for low-battery alerts.
○ High Output: Our advanced Raspberry Pi UPS models support high current output (up to 3A/5V), making them fully compatible with the power-hungry Raspberry Pi 4 and 5.

Frequently Asked Questions

○ Does the UPS HAT charge the batteries while powering the Pi?
Yes, our Raspberry Pi UPS modules feature pass-through charging. They power the Raspberry Pi while simultaneously charging the connected Li-ion batteries (typically 18650s).
○ Is it safe to leave the UPS plugged in 24/7?
Absolutely. Our boards include over-charge and over-discharge protection circuits to maintain battery health and ensure safety during long-term operation.
○ How do I install the safe shutdown script?
We provide open-source Python scripts and detailed tutorials on our Wiki. These scripts detect when the battery is critically low and trigger a safe sudo shutdown command to prevent data corruption.