SMUGDESK
SMUGDESK Raspberry Pi 4 UPS HAT 18650
Uninterruptible power supply HAT for Raspberry Pi 4 with 18650 battery backup and smart protection
- Designed for Raspberry Pi 4 for stable plug-and-play power backup
- Uses standard 18650 lithium cells for continuous backup power during outages
- Built-in overcharge, overdischarge, short-circuit and overcurrent protection for safe operation
- Standard GPIO-mounted stackable HAT design enables easy installation without complicated wiring
- Ideal for edge computing, home NAS, monitoring systems and portable Pi projects
Pi 4 UPS HAT with 18650 backup
This UPS HAT is built for Raspberry Pi 4 Model B and adds battery-backed power through standard 18650 cells. It targets developers running edge-computing nodes, home NAS units or portable monitoring rigs that must survive brief mains interruptions. The board plugs directly onto the GPIO header without extra wiring.
Thermals noise and power draw
The module draws only the current needed for charging and Pi operation, so heat output stays low during normal use. No active cooling is present, leaving the system completely silent. Protection circuits prevent over-charge, over-discharge, short-circuit and over-current events without adding audible noise.
Bundled accessories and software impact
No batteries, cables or mounting hardware are included, so buyers must supply their own 18650 cells and any mechanical fixings. The on-board management chip handles charge and discharge automatically, requiring no driver installation or user-space daemon on the Pi. This keeps the software stack unchanged while delivering transparent power-fail resilience.
Highlights
- Designed for Raspberry Pi 4 for stable plug-and-play power backup
- Uses standard 18650 lithium cells for continuous backup power during outages
- Built-in overcharge, overdischarge, short-circuit and overcurrent protection for safe operation
- Standard GPIO-mounted stackable HAT design enables easy installation without complicated wiring
- Ideal for edge computing, home NAS, monitoring systems and portable Pi projects
Specifications
No published specifications for this item yet.
Questions about this item
How do I install the UPS HAT on the Raspberry Pi 4 and which step is often missed?
Align the board with the GPIO header and press it straight down until all pins seat fully; the step often missed is checking that every pin is fully inserted before powering on.
What maintenance will the 18650 cells need over time?
Replace the 18650 cells when they no longer hold enough charge to keep the Pi running during an outage; the onboard protection circuit handles charge safety automatically.
What limit appears first when the UPS HAT runs the Pi continuously on battery?
The runtime limit of the installed 18650 cells is reached first; once depleted the board shuts down cleanly to protect the Pi.
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