Originally Posted by dangerdave
May not be the best choice, although one came with the TT. I bought the other to match.
Are you guys doing the 2x6V in series thing? Is this better than 2x12V in parallel? Do I even understand that correctly?
Mike837go is correct. When you want to take a battery reading after charging, you need to let the batteries rest for awhile and then check the voltage.
As for if your batteries are the best choice, that depends on what you plan on using them for.. Just to perform as a TT battery with no dry-camping then any RV/Marine battery will fill the need. If you plan on doing some dry-camping.. then you need to look at it from another angle. You will need to know what your DC electrical needs are currently and what they will be in the future and then move over to a TRUE DEEP CYCLE battery that will fit your needs and $$$ BUDGET.
A few things to understand are that electric motors (heater fan, water pump, non LED lights...) are not a batteries friend. They will drain your batteries at a pretty good rate.
A pair of 6 VDC batteries will give you more Ah's than a regular set of 12VDC batteries, BUT in each of the catagories they have batteries rated with a lot more Ah's, but at a cost.
Some members just added a 3rd 12VDC battery for an additional 85Ah's and are happy with the results. I opted for 2 Trojan T-145 6 volt batteries (260Ah), which for my needs is fine. Just remember that if you have an 85Ah battery you really can only use 43Ah's (about the 12.0VDC mark), which is the 50% rule
If these are new batteries, and you have room for one more, you may just want to add a 3rd battery (cheaper) and when they reach the end of their lives you can upgrade to a better selection.
Here is a link to my "RVing with SOLAR
" community on this forum. Look for the posts regarding 6volt vs 12 volt batteries. It will give you a the (easy to understand) difference between batteries.
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