These is a brand new Trojan series, "Reliant" which is AGM, thus no upkeep. Thanks for the insight in price.
The Lifeline is also AGM, and is similar in size to the T-105's. I had checked the L-16, but these are too big for my rig space.
What I am trying to do is get a good 2-3 night weekend out of the batteries, and not have to get a generator to start. In the future I'll get a generator to go longer, but now I figure if I can make it for a good long weekend, and just hookup at end and drive home and have the TV charge them back up on the way home that should be good!
Just trying to get the best bang for my buck, but not break the bank, of course. I seem to be too far from any dealers around here, and will need something shipped to my home, or possibly to a dealer near harrisburg, pa or lancaster, pa.