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Stretch · 07-13-2009, 08:41 PM

Our 05 HR Navigator (first sold in 04) came equipped as an all electric coach. It has 6 8D size 12 volt AGM Batteries for the coach and 2 8D size 12 volt cranker batteries. I figure these batteries are at least 5 years old. They still work perfectly. My question is; how long do these batteries last. I know they are quite expensive and all should be replaced at the same time.
Anybody have experience with an all electric coach?

Norm4015 · 07-13-2009, 08:43 PM

I am seven years on my AGM batteries and they are still working like new. I think I'll get many more years out of them.

Stretch · 07-13-2009, 08:55 PM

Thanks Norm. I feel better already...................

Richard and Babs and a Bob Tail Cat · 07-14-2009, 06:48 AM

I just put AGM in our coach and had reports of 10 plus years from other users. They are not cheap so I hape they last a looong time.

wa8yxm · 07-14-2009, 10:15 AM

There are several things that affect the life of the batteries.

Number of charge/discharge cycles, How deep they are discharged, how often they are over charged, how rapid is the charge/discharge

Battery life of 7-10 years if properly cared for is not uncommon

I'd not replace them till they show signs of failing.

Sixpack98 · 07-14-2009, 06:45 PM

Maybe the question should be: should I replace with AGM's when the current batteries give out. If you are not a big dry camper you might want to consider flooded batteries when the AGM's give out, which could be a long time. To be sure, AGM's are great to have if you dry camp a lot but a huge waste of money if you don't. We dry camp less than 25% of the time and our current flooded batteries are 4 years old. When they give out I will replace them with flooded batteries. IMHO AGM's are great for dry campers but not for those of us that only dry camp once in awhile. I think the general concensus is to replace all the batteries at the same time. Otherwise, you will chase gremlins all the time.

wa8yxm · 07-16-2009, 08:52 AM

Good point Sixpack

AGM's are expensive

FLooded wet cells give about the same life (if you get quality batteries) but they DO require service, I have to water mine every year, if they need it or not (Add distilled water every mother's day or there about)

Now, Mine are 4 years old and still perform like new

HOWEVER, a word of warning, There are some converters that kill battereies fast.. I don't have one of those, but some folks report needing to water their Flooded wet cells every month, or even every week.. you get one of those. a new converter may be a good thing.