How to charge a bank of 6V batteries

Trackrig wrote:

SCVJeff wrote:
Batteries can drop below 10.5 and survive, but not as a regular diet.
What makes you think the disconnect isn't a full disconnect, and why not? Is that the engine/ transmission (only) switch?

I know that my disconnect doesn't totally disconnect because the carbon monoxide tester and one other alarm is on after I flip the disconnect. If I leave it for more than a week (and usually there isn't power to plug in to) I pull the battery cables on both sets of batteries. This also makes sure I look at my batteries all of the time.

Bill

the reason i asked te OP that question is I have what appears to be a main disconnect as well, but all I can tell its removing is the engine and transmission CPU, both drawing power when parked. The coach comes from a different feeder.