I have a yellow top in my car Rick ,,, it was a rescue battery from battery core pile 3 years ago ,,, I am sure you are aware that a spiral core gel cell won`t trickle charge .... I brought this one back from the dead but it took me probably 3 weeks of charging/discharging to get it cycling again the way it should ,,, I bring it in every winter and once a month a use my smart charger on 6A mode to throw a top up in it after I discharge it for a few hours