You need to check the Specific Gravity (SG) of each battery cell, to insure that they are all about the same. Most dealers will say that they will put it on a FAST charge and it should be OK.
If at all possible call a auto parts place like Autozone and ask if they will test the batteries SG, and take the battery into them. If not you can buy an inexpensive hydrometer and CAREFULLY test it your self. You can then go to the TT dealership and demand a new battery. Look at the battery and get the date code off of it. The battery mfr website will tell you where to look for it and the cross reference chart.
Just my thoughts,
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package
Our Solar Album http://www.jaycoowners.com/album.php?albumid=329