You can pull the grid charger out of the car to charge outside. Should be some youtube videos of this if i recall correctly.
Also sounds like your battery 12v is shot, once bad they wont even want to recharge at a certain point. Id go get your new 12v then start testing out your IMA packs and see which is better.
Also sounds like your battery 12v is shot, once bad they wont even want to recharge at a certain point. Id go get your new 12v then start testing out your IMA packs and see which is better.