hp 75 battery contacts

[hfischer]

Hello all,

I just obtained an hp 75 in working condition. It runs from the power supply, but the battery contacts are broken off, there are just some mm sticking out from the case. Two broken-off contacts came with the machine, and I could possibly solder them to the stubs. But in the battery compartment I find three stubs. Two are where I would expect + and -, and a third one is located besides the rear side (-) contact. In the battery pack there is just plastic opposite to this third contact. Is the contact so long that, with the battery pack inserted, it is pressed onto the (-) contact?

Would be nice to know before I try to restore battery functionality.

Thanks in advance,

Helmut, Bremen, Germany