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
Hi wwest,
What you are talking about relates to gassing voltage which many improperly call boiling. It has very little to do with amps. At 40 c (104 f) gassing voltage is 13.98. You could shove in 200 amps, so long as you did not exceed 13.98 volts.
The boiling point for electrolyte is 110 C (230 f). At that point in time I'll certainly be looking to be elsewhere.
What you are talking about relates to gassing voltage which many improperly call boiling. It has very little to do with amps. At 40 c (104 f) gassing voltage is 13.98. You could shove in 200 amps, so long as you did not exceed 13.98 volts.
The boiling point for electrolyte is 110 C (230 f). At that point in time I'll certainly be looking to be elsewhere.
wwest wrote:
*** 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.
