I considered this, but was concerned about the lack of a vent tube connection. The battery in the W210 is located in a closed compartment under the rear seat. There's also a huge fuse block right next to it. So hydrogen buildup is definitely a concern. Optima says their battery will not vent hydrogen under normal conditions, but they admit it is possible. Does anyone else worry about this?
82 300D Euro
12 Honda Pilot
14 Tesla Model S
Former MB: 86 190E 2.3, 87 300E, 80 240D
Chain Elongation References