Mercedes CLS55 AMG W219, New Exide AGM 12-12 Aux (Auxiliary) Battery

Decided to replace the Auxiliary battery in the CLS, as I could not find how old the current battery was and also the top was dented?

I replaced the Varta Silver Dynamic AUX14 battery with an Exide AMG 12-12 battery. Replacement is very easy and can be done by any home mechanic.

Exide AGM Ready AGM 12-12 Battery

Exide AGM 12-12 vs Varta Silver Dynamic AGM AUX14

The AUX battery can be found on the passenger side, under the air cabin filter

Location of the AUX battery in the CLS55 engine bay