The battery pack for my 2012 Volt is degrading somewhat. I only get 8.2 kw of useful charge and not 9.7 kw like when I first bought the car. The car has 175k miles on it. I'm thinking of getting a new/used battery pack for it. I was wondering if I could use the old battery pack for storage for some old solar panels I just had taken down off my roof. I put a brand new solar system on my roof but have the old panels of a 2.45 kw system that I was thinking of installing on my shed. I could really use electricity out at my shed which is about 150 feet from my house. I was wondering about using my old Volt battery pack as storage for electricity produced from my old solar array. I also have the inverter from my old solar system. Is this even possible/practical?