AGM Batteries

[scoggins_jim]

--- In WanderlodgeForum@yahoogroups.com, "Eric Johnson"
wrote:
> Eric:
In my 86 PT40 I repalced the six conventional 6 volt batteries with
six AGM batteries. Also replaced the generator battery with a 12 volt
AGM. going AGM was probably the single most beneficial thing I did to
that coach.
There was never a twitch out of the electrical system after that.

I used two truecharge 40's to keep them on the step. Usually one would
do the trick when plugged in. I did have an additional 80 amp PDI that
I could bring on line if i needed higher charge rates when boon docking.

Were I you I would put in four six volt AGM wired in series of two.
That is, two sets wired so as to make two sets of 12 volt that are
then wired to the common terminals. Put them back in as you were
probably originally wired.
Give me a yell if you need clarification.

Some times we BB people make it difficult for the shop guys. Then
again, sometimes we deal with Opie and Festus. I wired those True
charge 40's so they were just plugged in to an outlet in the bay..
were not hard wired. It was then easy to hook a conventional
electrical cord to one of the chargers. Thus, it was easier for the
shop guys rather than dealing with the coach's power cord. Also, a
conventional 10 amp automatic charger clipped on to the terminals will
keep batteries charged up fine as long as it is just sitting at a shop.

I have AGM batteries in my current coach and I would never go back.
Don't have to keep filling them, no corrosion, great warranty.

All that being said, it seems you were having unusually bad luck with
your batteries. Wired correctly? Corrosion free? Distilled water only?
Was you charger set correctly?

By the way, check if your current charger is compatable for AGM
batteries. I would presume so since most modern chargers are.

Regards,
Jim Scoggins
04 M380