2014 Mercedes CLS 550 (W218) Battery Replacement

Replacing the primary battery in a 2014 Mercedes Benz CLS 550 (W218) 4-matic. Tools needed: -10mm socket to remove terminal connectors. -13mm socket with extension (need 4" or longer) with impact drill to knock loose the bolt. -Bid muscles to lift the 60lb batteries out and in. Battery replacement: Diehard AGM - H8 It took me 10 minutes and I was holding a phone recording the process. Overall, very easy. Exhaust modifications: Removed the primary cylindrical resonators and the secondary cross-pipe resonator. Factory exhaust and cats still in place. Great rumble and occasional crackle without the drone.