> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # UPS Base Board for Raspberry Pi CM4 (with POE, Gigabit Ethernet) **Type:** Product page · **SKU:** WS-22116 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia) **Page:** https://core-electronics.com.au/ups-base-board-for-raspberry-pi-cm4-with-poe-gigabit-ethernet.html ([markdown](https://core-electronics.com.au/ups-base-board-for-raspberry-pi-cm4-with-poe-gigabit-ethernet.html.md)) Uninterruptible Power Supply for powering the CM4 ## Pricing - **Price:** $94.20 (inc GST) — $85.64 AUD, exc GST - **Quantity discounts:** 6+ $82.21 (exc GST) · 12+ $79.65 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 31 and Sep 07. ## Restrictions Restrictions apply to this equipment as it uses button/coin cell batteries: - The equipment is intended to be used in trades, professions or industries - The equipment is not intended for sale to the general public - The equipment is not intended to be used where children are present - You are aware that this equipment may not meet child safety testing requirements as it is not intended to be used by consumers or general public, but rather, is intended to be used in trades, professions or industries in conjunction with the limitations and restrictions listed above - You are aware that these restrictions are due to a change in [A](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence)[ustralian legislation in 2022](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence) for button/coin cell batteries ![Button Battery Warning](https://core-electronics.com.au/attachments/uploads/iec-button-battery.png) A declaration of use will need to be submitted during checkout. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-22116:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-22116:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description If you're looking for batteries for this board, grab 3x of these - [Polymer Lithium Ion Battery, 18650 Cell (3.7V 2600mAh).](https://core-electronics.com.au/polymer-lithium-ion-battery-18650-cell-2600mah.html?gad_source=1&gclid=Cj0KCQiAj9m7BhD1ARIsANsIIvB78Ky7KoncNfa-4rfY8wu0PIke-3S7ULndUDBvUJQyiYNQpuYGSaEaAjJ0EALw_wcB) The UPS Base Board supports three external power supplies: USB, wide voltage DC, and PoE. When connected to an external power source, it powers the system and charges the batteries. The battery automatically disconnects once fully charged to preserve its lifespan. If the external power isn't enough, the battery supplements it to keep the system running smoothly. Even if the battery fails or is removed, as long as external power is connected, the system continues operating. When the external power is lost, the system automatically switches to battery power without disruption. You can monitor the battery’s status, including voltage, current, power, and remaining capacity, via I2C. ## Specifications - **CM4 Socket**: Compatible with all Compute Module 4 variants - **Batteries**: Supports three parallel 18650 Li-ion batteries - **Networking**: Gigabit Ethernet with RJ45 connector; includes 802.3af-compliant PoE circuit providing 5V/2.5A - **USB**: Four USB 2.0 Type A ports - **Onboard Connectors**: - Raspberry Pi 40-pin GPIO header - M.2 M KEY slot for connecting NVME SSDs or communication modules with PCIE M.2 M KEY interface - **Display**: One DSI port with a 22-pin 0.5mm FPC connector - **Camera**: Two CSI-2 ports with 22-pin 0.5mm FPC connectors - **Video Output**: Two HDMI ports supporting 4K at 30fps - **RTC**: Real-time clock with a battery socket, capable of waking the Compute Module 4 - **Storage**: MicroSD card socket for Compute Module 4 Lite variants (without eMMC) - **Fan**: Supports speed adjustment and measurement, operates at 5V or 12V - **Indicators**: - M.2 status LED - CM4 status LED - **DC Barrel Jack Input**: Accepts 7-36V, with 12V 2A recommended ## What's on Board **![](https://core-electronics.com.au/attachments/localcontent/CM4-POE-UPS-BASE-details-5_453872a66b3.jpg)** ## Dimensions **![](https://core-electronics.com.au/attachments/localcontent/CM4-POE-UPS-BASE-details-size_23001a76aa9.jpg)** ## Resources - [Wiki](https://www.waveshare.com/wiki/CM4-POE-UPS-BASE) ## Shipping List - 1 x UPS Base Board for Raspberry Pi CM4 ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE08762-4.jpg)