When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi guys, I use my SL55 once a week at most. What type of trickle charger should I get to keep the battery in perfect working order? Should I get 2 chargers - one for each battery? Thx
The cheap battery tenders work for me and my vehicles. I do have a C-tek charger that is a little more capable but honestly if you drive it once a week id say just buy a $30 battery tender.
I think I’m gonna go with the CTEK mxs 5.0. Is it necessary to hook both batteries up to a battery tender, or should I only give preference to the one in the boot?
Just picked up my CTEK 5.0 and hooked it up. Simple, easy and a neat looking machine. I’ve put it on the “normal” charging mode cos I’m not sure if the battery is an AGM. I’ve got the original Mercedes battery and I’ve attached a pic. Can anyone clarify whether this is indeed a “normal” battery or an AGM? Thx
The picture AK posted looks like my under hood battery, and it has a sight glass. Note how in the picture I posted of the trunk mounted AGM battery the edge of the spare tire in the under floor trunk well is visible.
On a related point, in 18 years of SL ownership I have never needed a trickle charger. I just started my SL after leaving it sit for 23 days while on vacation. It started right up with all consumer functions fully operable. If a trickle charger is needed for a 2 week idle period there is likely a problem with one of the batteries or the car electronics are not properly shutting down.
08-06-2018, 04:10 PM
