Re:EVs Are Essential Grid-Scale Storage
by bluGill on Wednesday January 25, 2023 @09:19AM
(#34518503)
You are missing something: lifetime depends on how much you cycle the battery. If you take the battery from 80% to 50% 5 times feeding the grid you do a lot less damage to the lifetime than just one 100% to 0% cycle, even though the first supplied more power overall to the grid. Smart management of batteries can ensure that this happens.
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Re:EVs Are Essential Grid-Scale Storage
by smileysteve on Wednesday January 25, 2023 @09:52AM
(#34518899)
For some really complex lithium battery theory, if you have no long trips planned, the battery will have less wear sitting at 80% than it will sitting at 100%.
Re:EVs Are Essential Grid-Scale Storage
by brianwawok on Wednesday January 25, 2023 @10:55AM
(#34519790)
Tesla UI in fact warns you if you set the charge level to more than 90% for more than 1 day in a row. 90% is the value they suggest.
I have so far "babied" my battery and max charge at 70% outside of road trips. So far, my degradation is right on track as average, which I assume is people doing the 90% charge trick - so trying to outsmart the battery hasn't worked for me yet.