Specifications
Product
Geekworm UPS Scap 5V5A supercapacitor UPS HAT
Developed With
Mcuzone
Platform
Raspberry Pi 5
Available Capacitance
100F, 60F and 22F versions
Hold-Up Time
A few seconds to a few minutes — sized for save-and-shutdown, not long backup
Output
True 5V / 5A via an on-board PD negotiation chip
Power-Loss Detection
Pogo pins contacting the Raspberry Pi 5
Monitoring
I2C for real-time voltage and current telemetry
Input 1
Wide-voltage DC barrel jack
Input 2
Standard USB-C PD charger
Input Design
Dual independent power inputs
Primary Function
Prevents low-voltage warnings while riding through brief power interruptions
Overview
The Geekworm UPS Scap 5V5A, developed together with Mcuzone, is a supercapacitor-based uninterruptible power supply HAT for Raspberry Pi 5. It is deliberately sized for ride-through rather than long backup: hold-up of a few seconds to a few minutes is enough to flush data and run a clean shutdown after mains loss.
An on-board PD chip negotiates a genuine 5V/5A output so the Raspberry Pi 5 does not see the low-voltage warnings that plague passive HATs under load. Pogo pins detect power loss at the board, and an I2C interface exposes real-time voltage and current so the host can trigger its own shutdown sequence. Two independent inputs — a wide-voltage DC barrel jack or a USB-C PD charger — let the HAT run from a bench supply or a standard phone charger.
Key Benefits
Supercapacitors tolerate far more charge cycles than lithium cells and need no battery-management safety circuitry; true 5V/5A PD negotiation avoids undervoltage throttling; dual independent inputs simplify test-rig and field power; I2C telemetry allows shutdown logic to be driven by real measurements.
Applications
Raspberry Pi 5 edge gateways and kiosks, industrial data loggers, remote monitoring nodes and any deployment where an unclean power cut would corrupt storage.
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