We also live in Colorado. I left my batteries in and connected. Hit -12 over the winter without issue. I have it plugged into my 50 amp, but 15 amp will be fine. Lithium batteries aren’t damaged by the cold, they just don’t charge below freezing. If they’re Battleborn’s, they should have internal heaters.
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Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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