Get as big a bat as you can fit. Grp 27 better than 24 AND make sure it is a true deep cycle. Mfg is less important than design. Make sure that quote the AH 20 hr discharge rate is listed on the spec. A grp 24 will be about 80 AH, a 27 around 100. Don't skimp.
Interstate are good but don't appear to make a true 12 v deep cycle but do make 6 volt if you have room for 2 in series.
Trojans are GREAT but expensive.
Thanx for the links those helped out alot. My battery is located in a single plastic container right behind the propane tanks. Menards has the interstate and I noticed all said starting even the one listed as deep cycle .
Lol sorry to hijack.....
You mentioning "4d" batteries remindd me of our hawkeye bus.
2 8-d batteries to run the inverter!
450 ah each.
Now that would have some POWER, baby.
My last sailboat had 2 4d's and an 1800 watt inverter and it would run the microwave (140 amps). But I would only use it for a couple minutes at a time. Inverter was right on top of the batts with about 12 inches of 00 wire.
OK new converter in and seems to be in good order. Still checking prices on batteries as the one in TT finally fully charged up after a week on the tender charger.
I do have one question on the old converter the line going into the 15amp box was a spliced 2 line with the second wire being capped off. The new one had single wire which j did not add a second wire to it.. is that OK to do? It didn't say I had to just said to make sure there was only one wire combined going into it.