For anyone who might need to know…
The pinouts on the aftermarket battery I have are labelled as follows…
P-, T, D, C, /, P+ This is reading right to left, holding the battery in front of you, right way up, with the pins facing towards you.
I interpret this to be, Power minus, Thermistor, Data, Clock, Switch, Power plus respectively.
The P- is connected directly to the negative of the battery. The P+ is not directly connected to the battery, but is connected via a solid state switch on the battery PC board.