ProgressiveRC 8 PowerLab - Manual (Page 66)

FMA Cellpro Connector/FMA Wiring Mode
Pin 1
Red
Black
Pack positive
Pack negative
1s Pack
Pack positive
(red), 3.7V*
Pack negative
(blk), 0V
Cell 1
* Nominal voltage with
respect to pack negative
FMA Cellpro Connector/FMA Wiring Mode
66