IDEA...charging house battery(set) underway.
It seems that the chassis alternator/VR system will often not fully charge the house battery(set) due to voltage drop between the two, or overcharge, boil the electrolyte away, for a deeply discharged...
Forum Discussion
BFL13 wrote:
The OP is mis-informed about the batteries boiling out when at low SOC and accepting lots of amps. I ignored that part of the OP to concentrate on the inverter/converter match etc.
Maybe the OP could post a diagram of his intended set-up so we could help with the details to get it so it would work. Especially since some people here already have done something like that.
"OP's house battery set is two 6 volt deep cycle (golf cart) batteries in series. Encountered almost complete boil off twice, both times ~300 mile drive immediately after only running on batteries for a weekend.
Alternator will source unlimited(***) AMPS as long as the battery set internal resistance is low, deep discharge.
*** In my case 90 amps in cruise mode.
Alternator output = 14.9 volts, house battery = 10.5 volts
4.4 volts X 90 amps = 396 WATTS, 200 watts/battery.
A lot of HEAT.
