Milwaukee M18 Tool Battery Communication Protocol
Posted4 months agoActive4 months ago
github.comTechstory
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Reverse EngineeringBattery TechnologyDiy Projects
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Reverse Engineering
Battery Technology
Diy Projects
The discovery of the Milwaukee M18 tool battery communication protocol has sparked interest among DIY enthusiasts and tech-savvy individuals, who are exploring alternative uses for the batteries.
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Sep 17, 2025 at 5:07 PM EDT
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If you really want to use it outside m18 tools you want something that turns off when voltage drops below 17 or 16 or so.
Once drained, the charger would no longer re-charge, and if I remember correctly, after opening the pack up, cells were at very low voltage.
Remember it would have to switch up to 20+ amps of 18v so it would be a hefty relay.
Exactly opposite from the manufacturer POV.
You are making N tools with N protection circuits and N x M batteries.
Instead of N tools, N x M batteries and N x M protection circuits.