The time factor has already been solved by the battery management system (BMS) as it keeps the pack at an ideal temperature to vastly prolong the life. Battery

The time factor has already been solved by the battery management system (BMS) as it keeps the pack at an ideal temperature to vastly prolong the life. Battery chemistry will not change much over time as long as it does not get too hot/cold. In addition, current data indicates that for the first 50,000 miles (100,000 km), most Tesla battery packs will lose about 5% of their capacity, but after the 50,000-mile mark, the capacity levels off and it looks like it could be difficult to make a pack degrade by another 5%. There's a ton of data and anecdotes on this subject at the https://teslamotorsclub.com https://teslamotorsclub.com forums.