Two chargers on same battery
I recall BFL (I think it was) saying he could use the Vector 1093 on a battery while it was also being charged, albeit feebly, by the stock converter charger. We dry camped all week, with no solar,...
Forum Discussion
You answered your own question. Get the wiring from the built-in charger checked out. 13.2 to 13.4 volts is not charging. It's only in maintenance mode.
Loose or corroded grounds, connections, or undersized wires, cause the converter/charger to think the battery-bank is charged.
Multiple charging source is normal for modern RVs. Solar-panel + generator running converter/charger + alternator from MH while driving.
A clamp-meter is nice for checking amps being supplied from each source while charging. While using your BD charger at the same time, if the total amps add up to more than the best single source you are gaining ground using more than one source.
By the way most voltage readings are taken across the battery-bank terminals. A reading below 14.4 volts early on does not necessarily mean the amp output is low and not in "bulk" mode. That's why ability to read amps is better when charging.
Loose or corroded grounds, connections, or undersized wires, cause the converter/charger to think the battery-bank is charged.
Multiple charging source is normal for modern RVs. Solar-panel + generator running converter/charger + alternator from MH while driving.
A clamp-meter is nice for checking amps being supplied from each source while charging. While using your BD charger at the same time, if the total amps add up to more than the best single source you are gaining ground using more than one source.
By the way most voltage readings are taken across the battery-bank terminals. A reading below 14.4 volts early on does not necessarily mean the amp output is low and not in "bulk" mode. That's why ability to read amps is better when charging.
