I recently read a post from RV Sue re: a dead TV battery while boondocking and her efforts to find and get help. It's always a good idea to carry your own good quality/long (read more expensive) jumper cables. Long cables make it easier to get or give assistance and you can always jump start your own vehicle from your RV battery.
Lynn
This another reason why I always carry my Battery Jump Box.
This Jump Box has been So, So, So Very, Handy around the Camper !!!!
This is the model I use and HIGHLY Recommend...
PowerStation PSX-3 18Ah Jumpstarter with Air Compressor and DC Outlet and USB Port - New Model 2013
As Always,
Happy Scamping !!!