Going out of town for about 3 months. Storing imiev in a lot with no electricity. On my ice vehicles I always disconnect the lead acid battery in those circumstances. Should I disconnect 12 volt battery on imiev? Manual says no, but it says use a trickle charger. I know on Leafs people disconnect the 12 volt battery for storage. My inclination is to disconnect the 12 volt battery. I've also read somewhere that the traction battery should be around 40% or so when storing.