[Danzilla]

No one knows, or I'm just not giving it enough time...?
At any rate, I went back to the battery and tried something else. Seeing as the voltage was dead anyway, I tried checking for resistance instead of voltage. I found with the contacts that go to the radio, the outer most ones (there is two of each, for three pairs) are directly connected to a contact on the back (the contacts for the charger). So at the moment I'm assuming that's the common. The other two contacts on the radio side, I can then assume the larger is positive and the smaller a sense line of some sort. Unless I hear from someone to the contrary, I think I'll get around to trying out the radio with 7.4v from my bench supply in that fashion in the next week or so. (the 'bench' supply is actually buried under the bench at the moment.) If anyone is curious, I'll report back if it works out... or if I let the magic smoke out.