Your barn will be warm enough for the battery. Is it humid or dry in your barn? We get sustained cold temp below -35F. Weak batteries don't wake up in spring. Batteries typically last less than 5 years here ... except my JD battery. It was born in 2000 and still lives! Never jump started.
It's always very dry around here in winter. Especially in the barns. I was going on seven years with Scarlet's battery. I think it was a few years old when I bought her too. Finally replaced it last spring after some quirky starting issues. Turns out, that battery was on it's last legs after 10 years. The only batteries that never seem to last for me are on our PWC's. I think the wet environment in summer wipes those out after a couple of years. Even my boat batteries seem to last 5-7 years.
Our sustained cold seems to be in the range of ten to fifteen below. And that usually only lasts a couple of weeks. More normal is five to ten below. Sure beats those 30's and 40's in winter for those southern States! They don't get to experience our fun!
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold
