As stated before, M3 cells are shipped to Tesla with 30% or less charge. Then they go thru manufacturing process to be combined into essentially a battery pack. That ships to Fremont, then installed into a car. In essence, there is a ‘cure time’ between cell manufactured and initial charge. It just happens during manufacturing....and isn’t 2 weeks or 30 days.



Much like any other manufacturing, testing can be done at various states to indicate a potential failure. Once a module is assembled, there is no turning back. So we need to know just before that point whether it’s good or not. And when you process over 3 million cells a day, you have a lot of data...

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