Once is happenstance, twice is coincidence, three times is enemy action:
All of the (surviving) battery packs produce 9.0 to 9.2 V, a bit hotter than the pair of fully charged lithium cells the radio expects to see, but the first two radios lasted for six years under that abuse.
This one failed after a few hours. It’s a new radio, but I’m willing to assume I killed the thing and will just eat the cost.
I have no theories about what’s going on, but I must tweak my APRS interface to work with a Baofeng radio I have on the shelf.
From now on, though, both radios will run from their stock battery packs.
Maybe I’m just a slow learner.
The Smell of Molten Projects in the Morning 
“New” to you, but how long did it sit on the shelf corroding the same way as the last two…?
Good point.
Another autopsy seems in order. [mutter]
You’re not the first one to have a Woxun die in a few hours – yours is the
third I’ve heard of in the last couple of years.
I’d call up the vendor and ask them to warranty it out. Why should you
have to eat $100 ?