Found a pinout diagrams for B&D 20V batteries and thought it’d be worth posting. Pretty much all the rest of the posts out there are pretty generic, mostly just + and -.
Minus is the negative terminal, plus is the positive. Then there’s an ID pin that the tool use to identify the battery. That pin is presumably a resistor that tell the tool what resistance to expect from the battery (how most brands do it). Then there’s a thermistor pin (TH) that tell the tool the battery temperature. Then there are four junction (C1-C4) that connect the cell groups (the BMS checks these during charging).
It’s basically the same as almost every other 20V Max battery platform out there. The cheap brands all seem to use the same layout for the ID, thermistor, and cell junctions for the BMS to read.
So is the ID check strict on Black and Decker products? What resistor value does it use for the ID pin? Has anyone probed a Black and Decker battery to find out what goes on with the ID pin?
Minus is the negative terminal, plus is the positive. Then there’s an ID pin that the tool use to identify the battery. That pin is presumably a resistor that tell the tool what resistance to expect from the battery (how most brands do it). Then there’s a thermistor pin (TH) that tell the tool the battery temperature. Then there are four junction (C1-C4) that connect the cell groups (the BMS checks these during charging).
It’s basically the same as almost every other 20V Max battery platform out there. The cheap brands all seem to use the same layout for the ID, thermistor, and cell junctions for the BMS to read.
So is the ID check strict on Black and Decker products? What resistor value does it use for the ID pin? Has anyone probed a Black and Decker battery to find out what goes on with the ID pin?