So yesterday I turned my car "on" but not started in order to put it into neutral and roll to a clear spot in our driveway so I could wash it. I ended up leaving it "on" - headlights, climate control fan, radio, etc - and killed the battery. Put my Schumaker (8A) charger on it and for ~2 hours it didn't show much progress so I ran to Walmart to get a replacement battery (this battery was 6 years old too). By the time I got home, it had successfully charged, car started, and has started multiple times today. Overnight, I put the new battery on the trickle charger and this morning it was indicating "Bad battery".
Took it to Walmart to return or exchange but they test it and their tester (admittedly, a better one than mine) says it's good. They won't exchange it in this case and said I can take it to the front desk to return, but they'll make me get it tested first and when they're told it's good, they'll refuse the return. My other option is go to a store without an auto center, which I'm considering....
Any ideas why my tester says it's bad but theirs says differently ? The manual for my tester suggests "desulfication" failed. No idea what that means....
Took it to Walmart to return or exchange but they test it and their tester (admittedly, a better one than mine) says it's good. They won't exchange it in this case and said I can take it to the front desk to return, but they'll make me get it tested first and when they're told it's good, they'll refuse the return. My other option is go to a store without an auto center, which I'm considering....
Any ideas why my tester says it's bad but theirs says differently ? The manual for my tester suggests "desulfication" failed. No idea what that means....