Charging a Dead battery - can you do it without driving?

Maintenance/Repairs
2

I’m not sure about the charging question, but I have other comments. First, idling a cold engine at high RPMs is causing a lot of engine wear. Second, not getting the car up to full operating temperature frequently is leaving moisture in the oil and the exhaust system, so he should follow the severe-service maintenance schedule and he should expect the exhaust system to have rust issues eventually. Overall this is a bad idea.