I would opt. For the second battery. I believe in cold weather conditions Max. battery power is a must. The cost of a second battery IMO is a lesser cost than being stranded in cold weather waiting for road service. I do have tank heaters, using the stay winterized method. I have never used them and not sure of the energy drain if I did. I Travel with "a little buddy" as backup heat incase unit goes dead.
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Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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