Looks here are the possibilities:
SH (1.0 mm) or GH (1.25 mm) or PH (2.0 mm).
cannot find it from anywhere if it is 1.25mm or 1.00mm. It is not 2.00mm for sure.
I am asking because I want to replace the tiny 40mAh battery with 2000mAh battery, which has PH2 connector. Need to find an adaptor or a connector (male) to fit in the one on the board.
Thank.s
Xiaodong