I am sure your battery has seen its days. Three years is about the life of these batteries. Our 2003 Montana batery died on the way to the 2004 rally because I forgot to check the water level in the battery. Leaving the battery on the coach trickle charger will dry up the battery. It needs checking at least three times a year. we did add a second battery on our Montana and moved it to our new one. It is controled through a marine switch which I can switch from one battery to the other and can turn the coach batteries off. I do check both of the batteries at least every three months for water. I use distiled water in the batteries.
Ken and Velda Taylor
Dahlgren Va (now in Wachula FL)
2005 3475 Montana
2000 Ford F350 Diesel
