The batteries are definitely expensive. I had to replace my original ones yesterday after 6.5 years. I called all over the Springs and everyone was with $5 in price for a Group 94 battery. They were $184 each.
On the other hand I can't complain because I get my fuel filters for free. My brother in law is Onan/Cummins certified and works on large generators for care homes and hospitals and keeps them in stock. He gives me one when I need it because I help him out from time to time with installations.
