The way the slides are built, this would be difficult as you would be dealing with large 4/0 cables, welding cable is pretty flexible but I wouldnít want it flexing in and out constantly. I installed my lithium in the small section in the front of the carpeted area which worked great. I run a small Xtreme bilge heater in this area and in 10 degree weather, this heater ran very little and kept this area 50 degrees which also kept the living area floor warmer. If this heater hadnít worked so well, I had planned to just use the comment method of silicone heating pads or tank heating pads under the batteries and insulating this small area or just use heated batteries. It is very surprising how little heat it takes to keep the front area compartment warm.
Brian & Jeannie
2018.5 Seneca 37RB with to many mods to list
2015 Jeep JKU Rubicon