Misleading project description. Very much further down the page:

> Cell balancing is not implemented. I know this is ironic, but because the cell balancing resistors aren't installed and Dyson used 1K resistors for the VCELL# connections, even if you shorted out the connections where the cell balancing resistors would go, which most people aren't going to do (and you'd have to cut some very fine traces on the V7 BMS PCBs), the cell balancing would be extremely slow through the 1K resistors.

So I guess the only use of this currently is reviving a dead battery pack.