"The new Mercedes-Benz battery recycling plant has an annual capacity of 2,500 tonnes. The recovered materials feed into the production of more than 50,000 battery modules for new all-electric Mercedes-Benz models. So it’s a modest start, but Mercedes plans to scale up production volumes and expand recycling capacities."

A modest start? If that corresponds to 50k new battery modules then wouldn't that also be approximately the same number of five- or ten-year old modules? That should be a sizable share of what Mercedes-Benz sold at the time.