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Re:GM, Volkswagen Say Goodbye to Hybrid Vehicles by xedeon on Monday August 12, 2019 @10:27PM (#20682262)
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 forums.

Re:GM, Volkswagen Say Goodbye to Hybrid Vehicles by clouddrover on Tuesday August 13, 2019 @12:08AM (#20682754)
Everyone's got anecdotes. Here's one.

3% degradation after 35k KMs: https://www.youtube.com/watch?v=avGUGFrLrVc

Then 8% degradation 1 year later at 100k KMs and the car now has a reduced rate of charge: https://www.youtube.com/watch?v=loulJ3ResDg

So why would I buy a 10 year old Tesla? If it requires a new battery I'd be better off just buying a different or newer car.