Worked like a charm! This was my answer to my battery always being dead when I went to go and start my car...As always, I needed to go somewhere, try and start the car 10 minutes beforehand and nothing. This did the trick....Praise God!We have had to reschedule appointments, miss appointments etc . . .all because of like I said..."You go out to warm up the car 10-15 mins. before you have to go somewhere...and all you hear is a "click, click, click" The battery was fine...I had some kind of "extra" item draining it in the cold winters too...But, found the BS "battery drainer" and that helped also . . .I put a piece of cardboard down, then the extra piece of "insulator" under the battery, in the battery holder... that may have helped a bit too . . .Take care . . .God bless Don the computer guy :)