My old backup car, an E320 wagon, 95..had a low battery and I took it for charging and they tell me its bad..

They did that before but I charged it myself and it was fine for months, not bad..But it died again and now when I installed with it reading 11.5 and yes, low...NOTHING..I did not notice it was REVERSE POLARITY Charged..Holdng 11 volts from negative to positive..

I just hope there is no damage to systems from connecting the reverse charged battery. I looked it up and indeed this happens. Now I must totally discharge it and begin chargign the proper polarity..Taking it slow because its pulling 50 amps and getting pretty warm!!

Just a who knew this was even possible!! And praying I dont need new relays all through the system..

Any comments always much appreciated!