Yes I have the same coach. IF the batteries are only 5 years old they are good to go if they have been maintained. By that i mean has the coach been plugged in to shore power all of the time? this will greatly increase life of AGMs. The way to tell if the batteries are still strong is to plug into shore power and after overnight the charging rate should be down to 4 or 5 amps. Look on the Alladin screen under "coach electrical" that will show the amperage. BTW I know AGMs are expensive but look at your battery bay. Notice that the batteries and their terminals are like new. Try that with the cheaper wet cell batteries. There are three things that are rather costly on our coaches. Tires, Batteries, Radiator. The good news is the engine and trans are bullet proof. and lots of power too. If you have to replace the batteries go AGM

Sir


I read your post and noticed you have an 05 Navigator, awesome, I have the same coach but 45 ft. Do you have the all electric model? I just bought mine and have a few questions if you would be so kind. The coach has 8 AGM batteries and I think they are about 5 years old. Im pretty sure they are 12 Volts each. Have you priced new ones? Blew my socks off when I saw what they cost. about $800 each. I didn't pay that much for all the batteries in my old coach. Do you know of a cheaper source?