My 4 year old 1.6 CGI Merc W204 on Friday had a totally flat battery after being left for 5 days. On testing the battery had 10v and was so dead I couldn't use the portable battery jump starter which to be fair had been sitting unused for two years.
I attempted trickle charging but the charger stopped saying the battery was charged and on testing only had 11.5 volts.
This car has start/stop, but I would expect an 80A 800CCA VARTA battery to last better than that and not go totally dead like that. Its not as if its a big engine to turn over.
A new battery seams to have done the job. That was very confusing to as using the reg applications kept returning the incorrect batteries. I wonder how many people having installed a non AGM battery in there Merc.
I wonder if other have found the same?
I attempted trickle charging but the charger stopped saying the battery was charged and on testing only had 11.5 volts.
This car has start/stop, but I would expect an 80A 800CCA VARTA battery to last better than that and not go totally dead like that. Its not as if its a big engine to turn over.
A new battery seams to have done the job. That was very confusing to as using the reg applications kept returning the incorrect batteries. I wonder how many people having installed a non AGM battery in there Merc.
I wonder if other have found the same?