Originally Posted by B. Miller
The battery was charged but at the moment I am guessing not fully. I got it from the dealer when I picked up the trailer figuring it was fully charged. I took it off the trailer after towing to and parking it in the storage lot. I just put it back on the trailer believing that the three plus hour tow to the army corp campground would fully charge the battery. that two six volt battery setup just might be the way to go.
It may have sat days without being plugged in.
A fully charged OEM battery (typically around 70 AH) will last about 7 days without a battery cut off switch. As stated before, an alternator will maintain your trailer battery (provided the truck's 12 volt accessory line has a fuse in it) but take forever to charge it.
Read the attachment as to why alternators make poor storage battery chargers; but work great to charge your starting battery.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW