rbuck

I have a 2015 S550 with ~13000 miles and recently purchased a CTEK MUS 4.3 battery charger. Since I do not drive the car very much I want to put the car on a battery tender in hopes of prolonging its life. The owners manual wants you to buy a Mercedes charger and list dire consequences to the battery or the car's electronics if not charged properly. The charger has modes for lead acid or AGM. My assumption is that the battery is AGM so can anyone confirm that? Also, does anyone have experience with this or other chargers/tenders.

Thanks,

Richard

- Mover -

To me, whether its a Mercedes charger or a good quality aftermarket charger. its the same thing.

When I checked my battery, I saw that it was an AGM battery but it wasn't the original Mercedes battery in there. (I don't think Mercedes puts in Interstate batteries in their cars. )

Either way, I'd pick up a good quality aftermarket charger and hook it up but if you're worried, just purchase the Mercedes charger.

My friend who owns a Ferrari was struggling with the same issue as you. He played it safe and picked up the Ferrari charger.