Battery tender???
I use the CTEK Multi US 25000. Same model MB lists for the C63s. It's a great charger with lots of safety and battery reconditioning features. You can get them for about 200 on Amazon. Probably double that from the dealer.
http://www.pelicanparts.com/catalog/...pg8.htm#item33
Trending Topics
The Best of Mercedes & AMG
They are often uninformed about their own products
Ask them to price a lithium battery for your car
Plus for battery tender
For my lawn tractor I use scrap 200ma 12v charger that works just fine for that purpose
it is in the back of trunk if you want to look for yourself.
It has a hose hanging down to be a vent of the battery so it is a wet or gel or glass mat I would think.




it is in the back of trunk if you want to look for yourself.
It has a hose hanging down to be a vent of the battery so it is a wet or gel or glass mat I would think.




https://www.amazon.com/CTEK-56-926-L.../dp/B00EUF6UM8











