Arzaam
Senior Member
- Joined
- Oct 13, 2014
- Messages
- 651
- Reaction score
- 49
- Age
- 27
- Location
- Pakistan
- Your Mercedes
- W203 2002 c180
I have a 4-5 year old battery on my w203 non AGM but maintenance free variety of Hankook brand. so after sitting for 15 days not driven the battery would be at 12.3-12.4V and I would put it on CTEK and after 4-5 hours it would show as full, did this whole of 2017, now I have noticed when I get back to it after 10 days the battery is at 12.5-12.6V and only takes a hour to get to full, is this normal or sign the battery is on its way out as it charges so quickly? but it seems to hold that charge for 10 days or more as well. in 2016 when I first started using any sort of charger on it it used to be at 12.3-12.4V after a 10-15days but take 7 hours to charge, charging times seems to be reducing with age but same or better voltage is being maintained.
for comparison sake my BMW X5 v8 has a brand new battery from BMW and after a week it goes down to 12.4V. I don't want the Mercedes battery to suddenly to give up while I am somewhere and having to jump it nor I want to replace unless really necessary given early w203s history with rear sams and changing batteries. whats your experience thanks.
for comparison sake my BMW X5 v8 has a brand new battery from BMW and after a week it goes down to 12.4V. I don't want the Mercedes battery to suddenly to give up while I am somewhere and having to jump it nor I want to replace unless really necessary given early w203s history with rear sams and changing batteries. whats your experience thanks.