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Milwaukee M18 Battery Reverse Engineering
Coming soon... Milwaukee M18 Battery Dissection and Reverse Engineering...
I put this PCB under a decent camera (Sony A6300 with the FE 2.8/50 Macro lens) after removing the circuit board and de-soldering the connectors. First spreadsheet is the results of a 7 second capture on my scope, triggered by the communication line dropping in voltage when the battery gets plugged into the charger. Definitely glad to know I wasn't crazy or being downright stupid in not finding any communication happening between the tool and battery, though I'll have to confess I did miss the 12V/3V 'handshake' - I saw that the voltages were there, but never saw the handshake or saw them drop out.
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