Jun 24, 2015, 12:35 PM
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w211 (E350) battery charge
Thread Starter
Newbie
Joined: Feb 2007
Posts: 8
Likes: 0
E350
w211 (E350) battery charge
I have question concerning charge battery: there are two batteriesin my car (W211, E350T, 2006);
1). if they both need to be charged time to time when the car has not been drive for months?
2). if I can charge the system battery (in the trunk) without disconnet the battery? or the battery must be disconnected and taken out?
3). Can I charge the batteries by connecting my charge to the jump start connectors (in the hood)?
1). if they both need to be charged time to time when the car has not been drive for months?
2). if I can charge the system battery (in the trunk) without disconnet the battery? or the battery must be disconnected and taken out?
3). Can I charge the batteries by connecting my charge to the jump start connectors (in the hood)?
MBWorld Fanatic!
Joined: Jul 2006
Posts: 1,779
Likes: 11
From: Long Island, NY
2004 E320
James...ideally, if you're not going to drive the car for months, the main and aux battery's ground cables should be disconnected.
However, leaving them connected, you can attach a high quality electronic maintenance charger, like the Ctek 3300 (click here for info)
When I first purchased my preowned '04 in August, the main battery was 65% discharged. I disconnected the ground cable and charged. When finished, I checked the aux barttery and it too was now fully charged. So apparently the battery control unit does pass the charge on to the aux, even with the main ground disconnected. Again, just my experience, someone else may know for sure about that.
My '04 doesn't have jump start connections under the hood , so I can't help with that one.
However, leaving them connected, you can attach a high quality electronic maintenance charger, like the Ctek 3300 (click here for info)
When I first purchased my preowned '04 in August, the main battery was 65% discharged. I disconnected the ground cable and charged. When finished, I checked the aux barttery and it too was now fully charged. So apparently the battery control unit does pass the charge on to the aux, even with the main ground disconnected. Again, just my experience, someone else may know for sure about that.
My '04 doesn't have jump start connections under the hood , so I can't help with that one.
