I have a Maintenance free Ac Delco battery which I have left in the garage and has lost all its charge over about 10 months. I've come to recharge it and I've read in the Haynes Manual that these batteries if allowed to completely discharge have to be charged by a special charger because home chanrger haven't got the oomph (best word I could find!) to do it. On leaving it to slow charge for 12 hours, I can see what they mean. What/where can I go to sort this? or is the local battery tip going to be beckoning, I hasten to add it's a good battery, only taken out because the saab it was in has been off the road for that time.