Dead battery

You could also just put jumper cables between your TV and TT batteries. Jumper cables should be large gauge and would allow the maximum amount of current between the two systems. Then it would be totally dependent on what the state of charge was when you start, and how robust the charging system on your TV is. The alternator on our F-150 goes well above 200 amps; IDK what your TV can do.

I currently own 2 Interstate 12v group size 24 deep cycle batteries for my 177.  Protocol has been the same since 2011, hence these batteries are still working well after nearly 9 years:  1) remove batteries late October/early November and set on concrete floor in our unheated garage (northern Michigan)  2) clean posts and check water levels in each cell  3)   2 amp trickle charge at this time for 24 - 36 hours/battery.  4) leave both batteries hibernate during the winter - nothing done during this time  5) early May repeat step number 2 and 3 above then re-install.  Works well.  I planned on going with twin 6 volt batteries many years ago but the ones I currently own refuse to die so until that happens I will continue to use them.

Thanks, glue guy. The batteries are too heavy and its too far for me to move them. I've thought about the solar charger but I i think the charger would get stolen (plus i keep everything covered).  So...my initial question: can I do this by hooking my TV up regularly?

I've been wondering about this myself.  I bought my camper used with batteries needing to be replaced in the near future.  Its getting close to that now and I will by golf cart batteries as per advice on this forum.  Before the expense though I need a plan to keep them from losing charge.  My pod is parked where I have no power.