I'm looking for some advice from the group. I did a search on winter storage and the use of a Battery Tender trickle charger seemed to get very positive reviews. Could some one tell me how this works? Is it plugged in the cigarette lighter? Or would it go on the battery posts? I am afraid of leaving the hood open because of critters in the garage. The car will be store for about 3 1/2 months. Any advice on how to use the battery tender would be appreciated!