Keep your Raspberry Pi 5 running through any power interruption with 10,000 mAh of clean, USB-C PD battery backup.
The Argon PWR 27W UPS for RPi 5 is an uninterruptible power supply purpose-built for Raspberry Pi 5 and compatible Argon 40 cases. It sits between your wall power supply and your Pi, delivering a steady 27W USB-C Power Delivery output so that a momentary outage, a tripped breaker, or an accidental cable pull never causes an unexpected shutdown or filesystem corruption.
At its core is a 10,000 mAh lithium battery paired with a smart fuel gauge, giving you meaningful runtime on battery rather than just a few minutes of grace time. An auxiliary USB-A 5V port lets you power a secondary device — a small hub, an LED strip, or an external sensor — directly from the UPS. The unit is controlled entirely in hardware: a physical ON/OFF switch, a battery-check button, and a row of LED indicators cover everything you need without installing any software.
The Argon PWR UPS is designed for makers, home-lab enthusiasts, and anyone running a Raspberry Pi 5 in a location where reliable power matters — a remote data logger, a home server, a kiosk, or a project that simply must not lose its state unexpectedly. It carries both FCC and ETL certifications and ships with an Argon E-marker USB-C cable rated to carry a full 27W PD session.
📝 Note: A USB-C power supply is not included. You must supply your own compatible PSU — see Power Supply Selection for wattage recommendations.
| Specification | Value |
|---|---|
| SKU | ARG-PWR-UPS-10K |
| Model Number | A24-011-PWR-UPS-AR-10000 |
| UPC / EAN | 5065019946225 |
| Battery Capacity | 10,000 mAh |
| USB-C Output (PD) | 27W USB-C Power Delivery |
| USB-A Output | 5V |
| USB-C Input (minimum) | 5V 18W |
| USB-C Input (recommended) | 27W PD |
| USB-C Input (optimal) | 45W PD |
| Battery Check Button | Yes — press to display charge level for ~1 second |
| Battery Level Indicator | LED bar indicating current charge level |
| Smart Fuel Gauge | Yes — with calibration capability |
| ON/OFF Switch | Yes — with status monitoring |
| Included Cable | Argon E-marker USB-C |
| Certifications | FCC (Part 15, ref: 23EP10114F02), ETL |
| Weight | 515 g |
| Dimensions | [TODO: Verify physical dimensions — catalog value of 230 × 137 × 39 cm is clearly erroneous (implies 2.3 m width); must be confirmed against a physical unit or manufacturer spec sheet, likely in mm] |
The table below shows the full compatibility matrix for the Argon PWR 27W UPS. "Fully supported" means the device supports basic power delivery, UPS battery-backup functionality, safe shutdown, and USB-C PD negotiation.
| Device | UPS Support | Notes |
|---|---|---|
| Raspberry Pi 5 (bare board) | ✅ Fully supported | Primary target device |
| Raspberry Pi 4 (bare board) | ✅ Fully supported | — |
| Argon ONE V5 | ✅ Fully supported | Recommended pairing |
| Argon ONE V3 | ✅ Fully supported | — |
| Argon NEO 5 | ✅ Fully supported | Recommended pairing |
| Argon NEO | ✅ Fully supported | — |
| Argon POLY+ | ✅ Fully supported | — |
| Argon POLY+5 | ✅ Fully supported | — |
| Argon ONE V2 | ❌ Not supported | Requires 15–18W only; UPS functionality not supported |
| Raspberry Pi Zero | ❌ Not supported | Requires micro-USB to USB-C adapter; UPS functionality not supported |
| Raspberry Pi Zero W | ❌ Not supported | Requires micro-USB to USB-C adapter; UPS functionality not supported |
The primary intended host board for this UPS — the Argon PWR 27W UPS is designed around the RPi 5's 27W USB-C PD power requirement.
The Raspberry Pi 5 is Raspberry Pi Ltd's flagship single-board computer, featuring a high-performance Arm Cortex-A76 processor, onboard PCIe, a dedicated power button, and a real-time clock — making it well suited to always-on and server-style workloads where UPS protection is most valuable.
Source: raspberrypi.com/products/raspberry-pi-5
| Specification | Value |
|---|---|
| Processor | Broadcom BCM2712, quad-core 64-bit Arm Cortex-A76 @ 2.4 GHz |
| GPU | VideoCore VII — OpenGL ES 3.1, Vulkan 1.2 |
| RAM | 2 GB, 4 GB, 8 GB, or 16 GB LPDDR4X-4267 |
| Onboard Storage | microSD (UHS-I) |
| Storage Expansion | PCIe 2.0 ×1 connector (M.2 HAT+ optional) |
| Wi-Fi | Dual-band 802.11ac (2.4 GHz + 5 GHz) |
| Bluetooth | Bluetooth 5.0 / BLE |
| Ethernet | Gigabit Ethernet |
| USB | 2× USB 3.0 (5 Gbps), 2× USB 2.0 |
| Display Output | 2× micro-HDMI — up to dual 4Kp60 simultaneous |
| Camera / Display | MIPI CSI (camera), MIPI DSI (display) |
| GPIO | 40-pin standard Raspberry Pi GPIO header |
| Power Input Connector | USB-C |
| Minimum PSU | 5V 3A (15W) |
| Recommended PSU | 5V 5A (27W) |
| Real-Time Clock | Yes — onboard battery connector |
| Power Button | Yes |
| OS Support | Raspberry Pi OS (64-bit recommended), Ubuntu, and others |
| Form Factor | Standard Raspberry Pi |
| Dimensions | 85 mm × 56 mm |
Compatibility status with this UPS: ✅ Fully supported — basic power delivery, UPS battery backup, safe shutdown, and USB-C PD negotiation.
📝 Note: The Raspberry Pi 5 recommends a 27W PSU for full-performance operation. The Argon PWR UPS's 27W PD output matches this requirement exactly, making it the ideal supply for standard setups. If you are running an NVMe HAT+ or multiple high-power USB peripherals, use a 45W PD input supply to ensure the UPS can fully recharge while simultaneously powering a loaded system.
The Raspberry Pi 4 is Raspberry Pi Ltd's previous-generation flagship single-board computer, offering a quad-core Arm Cortex-A72 processor with up to 8 GB of RAM and USB 3.0 connectivity.
Source: raspberrypi.com/products/raspberry-pi-4-model-b
| Specification | Value |
|---|---|
| Processor | Broadcom BCM2711, quad-core 64-bit Arm Cortex-A72 @ 1.8 GHz |
| GPU | VideoCore VI — OpenGL ES 3.1, Vulkan 1.0 |
| RAM | 1 GB, 2 GB, 4 GB, or 8 GB LPDDR4-3200 |
| Onboard Storage | microSD |
| Wi-Fi | Dual-band 802.11ac (2.4 GHz + 5 GHz) |
| Bluetooth | Bluetooth 5.0 / BLE |
| Ethernet | Gigabit Ethernet |
| USB | 2× USB 3.0, 2× USB 2.0 |
| Display Output | 2× micro-HDMI — up to dual 4Kp60 |
| GPIO | 40-pin standard Raspberry Pi GPIO header |
| Power Input Connector | USB-C |
| Recommended PSU | 5V 3A (15W) |
| OS Support | Raspberry Pi OS (32-bit or 64-bit), Ubuntu, and others |
| Form Factor | Standard Raspberry Pi |
| Dimensions | 85 mm × 56 mm |
Compatibility status with this UPS: ✅ Fully supported — basic power delivery, UPS battery backup, safe shutdown, and USB-C PD negotiation.
📝 Note: The Raspberry Pi 4 requires only 15W, so the UPS's 27W PD output provides substantial headroom. Any of the three input PSU tiers (18W minimum, 27W recommended, 45W optimal) will adequately power the Pi 4 while keeping the battery topped up.
⚠️ Warning: Always power off your Raspberry Pi and disconnect the wall power supply before connecting or disconnecting any cables between the UPS and your Pi. Connecting or disconnecting under load can cause unexpected resets or hardware damage.
Using the supplied Argon E-marker USB-C cable:
📝 Note: Always use the included Argon E-marker cable for the UPS OUT → Pi connection. Standard USB-C cables that are not E-marker rated may not negotiate the full 27W PD session correctly.
See Power Supply Selection below for guidance on which PSU wattage to use.
The LED bar on the UPS reflects the battery's current state. Behaviour varies depending on whether the UPS is connected to mains power and whether there is an active load.
| State | LED Behaviour |
|---|---|
| Battery check button pressed | LEDs illuminate for ~1 second, showing current charge level |
| Charging (PSU connected, not yet full) | LEDs blink continuously, reflecting current charge level |
| Fully charged (PSU connected) | All LEDs remain steadily lit |
| Discharging (running on battery, load present) | LEDs remain off — press Battery Check Button to read level |
The UPS includes a smart fuel gauge that learns the true capacity of the battery under your specific Raspberry Pi load. For accurate charge-level readings, complete one full calibration cycle after first use:
📝 Note: The system remains usable during this first cycle. Fuel gauge readings before calibration is complete may be less accurate, but the UPS will still provide full backup power. [TODO: Confirm whether the fuel gauge shows inaccurate readings prior to the first calibration cycle completing, and approximate how long a typical calibration discharge cycle takes under standard RPi 5 load]
The Argon PWR UPS accepts a range of USB-C PD input supplies. Choose the appropriate tier for your setup:
| Input Tier | Wattage | Recommended For |
|---|---|---|
| Minimum | 5V 18W | Basic setups — Pi 5 at light load, no storage expansion |
| Recommended | 27W PD | Standard Raspberry Pi 5 or Argon ONE V5 / NEO 5 setups |
| Optimal | 45W PD | High-performance setups with NVMe HAT+, multiple USB peripherals, or when simultaneous full-load operation and battery charging is required |
📝 Note: Using a 27W PD input supply powers the Pi 5 at full rated capacity and charges the battery, but under sustained heavy load the battery may charge slowly or not at all. A 45W PD supply ensures the UPS can recharge simultaneously while the Pi is under full load.
⚠️ Warning: Do not use a PSU rated below 5V 18W. [TODO: Confirm exact behaviour when an under-spec PSU is connected — e.g., does the UPS refuse to charge, charge very slowly, or provide only partial output?]
The Argon PWR 27W UPS operates entirely in hardware. No software installation, kernel modules, daemons, or config.txt edits are required for core UPS functionality — the ON/OFF switch, battery-check button, and LED indicators provide all necessary control and status information without any OS involvement.
📝 Note: The compatibility matrix identifies "safe shutdown" as a supported feature for all fully-compatible devices. [TODO: Confirm and document the safe shutdown mechanism — specifically whether it is triggered automatically on battery depletion, whether it requires a GPIO monitoring daemon or I²C fuel gauge integration, and whether any software package or script from Argon 40 is needed to enable it]
If you are using the Argon PWR UPS inside an Argon ONE V5 or Argon NEO 5 case, refer to the case-specific wiki page for any additional software setup (e.g., fan control daemon, power button configuration) that relates to the case itself rather than the UPS:
The Raspberry Pi does not power on after connecting the UPS.
**The battery level LEDs do not illuminate when