Batterry recommendation for Class A Diesel

NAPA group 31 AGM batteries are made by "East Penn" You can order from any NAPA store. I purchased mine in Oregon and no sales tax.
NAPA store in Tillamook, Or. also installed them

For coach batteries IMHO it is hard to beat golf-cart batteries from Costco or Sam's club.
Last set I bought at Sam's for $46 a piece was still usable after 12 years.
Having advanced inverter/charger I recall adding water only twice in 12 years.
YMMV

AGM's didn't work for me due to I didn't drive my RV enough! Even with a constant trickle charge.

harold1946 wrote:
Rolls-Surrette S6-275AGM. 5 year warranty, 2 year free replacement, three year prorated. In my book they are the finest battery made.

One of the best brands out there.

Trojan is also good, 27-AGM. If you have a couple of inches of extra space I would recommend the Trojan/Reliant T1275-AGM. 270 minutes @ 25A discharge rate versus 158 minutes @ 25A.

usersmanual wrote:

harold1946 wrote:
For 12 volt batteries it would be the S12 series. You did not specify. Warranty is the same.

I would like recommendations on a good to top of the line Sealed Deep cycle AGM battery (group 27). Thanks

looks like he did?

In his second post, but not the first. Group 27s are available in both 6 and 12 volt.

usersmanual wrote:

harold1946 wrote:
For 12 volt batteries it would be the S12 series. You did not specify. Warranty is the same.

I would like recommendations on a good to top of the line Sealed Deep cycle AGM battery (group 27). Thanks

looks like he did?

In his second post, but not the first. Group 27s are available in both 6 and 12 volt.

rpgibbs wrote:
I am going to replace my current coach interstate lead acid batteries (4) in my 2005 American Tradition. I would like recommendations on a good to top of the line Sealed Deep cycle AGM battery (group 27). Thanks

You might want to give these people a call....
BATTERIES PLUS
Looks expensive, I know, but if you get yourself a store manager on the phone, you'll be surprised of the deal you might be able to make.
Also consider the 4 and 5 year full replacement warranty that may come with your choice and mine will be tortured and suffer greatly during their life of whatever that might be.

harold1946 wrote:
For 12 volt batteries it would be the S12 series. You did not specify. Warranty is the same.

I would like recommendations on a good to top of the line Sealed Deep cycle AGM battery (group 27). Thanks

looks like he did?

Lifeline AGM is an excellent battery. 4x GPL-27T for 400AH. But better IMHO 4x GPL-4CT for 440AH, check the dimensions.

Sometimes I scheme on how to install the GPL-6CT for 600AH but the height is a issue. I actually have the room for 8x GPL-4CT with slightly smaller chassis battery and may go that route someday.

The AGM charging profile is different than flooded so check out your charger capability.

For 12 volt batteries it would be the S12 series. You did not specify. Warranty is the same.