Sounds like they did not upgrade the Chevy alternator to a heavy duty 300 amp unit... OEM is 165 so after an hour they stop it from charging the house batteries because of excessive heat concerns... burning the alternator up, not overcharging the batteries. I would not bypass this system until or go to a BIRD system until I was sure I had a much bigger alternator than OEM.
My Intellite
BIRD system uses 13.3+V in the engine batteries before it starts charging the house batteries, BUT in my MH it is from a heavy duty 260 amp big truck alternator through a 1200 amp (for 30 seconds) 200 amp continuous BigBoy solenoid. Even with this robust system I'll run the generator for an hour before getting on the road to bring the house batteries up after boondocking, otherwise I'll see 160+ amps out of the alternator for several hours... lots of heat. I feel an hour of generator time is easier/cheaper than replacing an alternator even though I carry a spare one.
