[77newell]

My experience concurs with Doug's. The house battery in the 77 coach lasted 8 years and was just a standard battery but didn't experience deep discharges and was recharged with a three stage charger. It was also regularly desulphated. The chassis batteries were located next to the engine compartment and those batteries lasted about 6 years, but again were deeply discharged only on rare occasions of cold weather and because of location experienced more heat.