Repurposing Milwaukee Power Tool Batteries for Consumer Electronics
Transforming standard M18 power tool batteries into versatile portable power stations for various devices.
1The Versatile TOP-OFF Inverter
Milwaukee's M18 TOP-OFF inverter transforms standard power tool batteries into portable power hubs. It delivers 175W of AC power, 45W via USB-C Power Delivery, and 12W through USB-A ports simultaneously. This compact hardware allows users to leverage existing tool batteries for charging consumer electronics like laptops and handheld gaming consoles efficiently.
2Charging Modern Gaming Handhelds
The 45W USB-C Power Delivery port on the TOP-OFF inverter matches the stock charging requirements of the Valve Steam Deck. By utilizing these batteries, users gain a portable charging solution for high-end handhelds without needing wall outlets. This provides a practical alternative for gamers who already own Milwaukee power tool ecosystems.
3Advanced Soldering Iron Integration
While Milwaukee offers a fixed-temperature M12 soldering iron, it lacks the flexibility required for precise electronics work. Users can instead connect USB-C powered irons like the Pinecil V2 to the TOP-OFF adapter. This setup provides adjustable temperatures and open-source firmware capabilities, significantly expanding the utility of the battery for makers.
4Powering Remote Raspberry Pi Projects
Remote computing projects like bird-feeder cameras or weather stations often lack grid access. The M12 and M18 TOP-OFF adapters provide the necessary power for Raspberry Pi Zero 2 W or Pi 5 boards. This allows developers to deploy hardware in off-grid locations by simply swapping out standard drill batteries as needed.
5Portable Starlink Mini Connectivity
The Starlink Mini kit can operate on an M18 battery when using the AC outlet on the TOP-OFF adapter. Since the device requires at least 65W, the AC plug is mandatory. A 5Ah battery provides approximately two hours of runtime, while a 12Ah battery extends this to five or six hours.
6Outdoor Entertainment and Lighting
Portable projectors and LED holiday lights can be powered by the M18 system for outdoor movie nights or seasonal displays. The TOP-OFF adapter handles both AC and USB-C power requirements for these devices. Users must ensure batteries remain dry and elevated, as the hardware is not waterproof and risks shorting out.
7Modifying Power Wheels Performance
Replacing standard 12V Power Wheels batteries with 18V Milwaukee packs significantly increases vehicle speed. This modification requires specific battery adapters, wiring, and fuses to manage the electrical load. While it enhances performance, it places extra strain on motors and gearboxes, making it unsuitable for younger children due to increased power.
8Expanding Power Tool Ecosystems
The shift from dedicated tool usage to multi-purpose power delivery demonstrates the hidden potential of lithium-ion battery platforms. By utilizing specialized inverters, users can repurpose existing equipment for diverse technical applications. This trend highlights how modular power systems are becoming central to portable computing, remote connectivity, and DIY hobbyist projects.
Original article: How-To Geek — Repurposing Milwaukee Power Tool Batteries for Consumer Electronics