battery pin data for testing Motorola XPR 7550e??

[Danzilla]

Hi. First post here.
I was looking for a little help with a Motorola XPR 7550e VHF two way radio. Not sure this really fits the forum topic, but was the closest I could find here. Anyway, I found it at a thrift shop for just a couple bucks. No charger and the battery doesn't seem to have a charge, unsurprisingly (DMM, checked the different contacts.) Before paying for a charger or even a new battery, I was hoping to see if the radio at least powers on. So after doing a number of searches, skimming through the service manual, and even looking for pics of the main circuit board to see if I could spot the common, I'm still stumped. I can not find any references to which contact is which, in order to manually try and feed it with the 7.4v needed.
Even if it's not specified somewhere like in a user or service manual, I'd think it shouldn't be too hard to find mention of the batteries contacts for/by someone trying to test them, but still haven't found any relevant posts.
Anyone familiar with this XPR 7000 line? Looks like a PMNN4491 Motorola MotoTRBO e Series IMPRES battery.

Thanks for reading,
D