Regulator gone bad?

Hmmmm, been charging the battery at 2 amps for the last 48 hours and haven't seen any change in behavior. Spins the starter like crazy but the voltmeter in the run position shows only 10 volts.

At one point, while messing around I had the charger connected and set to 30 amps out. When I turned the key to the run position the voltmeter showed the full 12 volts and my electronic speedo came on - as it should.

I'd think that with a load test at the battery shop, if there was an issue with the battery or if it didn't have a full charge, it would have failed the test.