Rather than having a shorter lifespan than internal combustion engines, EV batteries are lasting way longer than expected, surprising even the automakers themselves.
Probably something to do with the MTBF (Mean Time Between Failure) based on that you can calculate how long your stuff lasts and how you should schedule repairs, or in that case, how long you can provide warranty.
I’d be intetested in the numbers for the jump from 8 -> 15, too
it’s a number that i pulled out of my ass but yes, it’s about annualized failure rate. If the average battery breaks after 9 years, then it means there would be a lot of free replacements under the 8 year warranty. Like for hard drives they give 3 years warranty but it’s normal to assume that it lasts 10-15 years and not break immediately after 3 years (exception: [western digital inserted a timebomb[(https://www.reddit.com/r/synology/comments/13uyk41/wd_red_pluspro_issue_drive_being_markd_as_warning/) to mark their drives as faulty via SMART as soon as the warranty is expired)
for the mitsubishi imiev most batteries are still working (different chemistry from modern ones) even if the last ones have been made in 2013
What’s the 8->15 year math?
Trust me bro MTBF maffs.
Probably something to do with the MTBF (Mean Time Between Failure) based on that you can calculate how long your stuff lasts and how you should schedule repairs, or in that case, how long you can provide warranty. I’d be intetested in the numbers for the jump from 8 -> 15, too
it’s a number that i pulled out of my ass but yes, it’s about annualized failure rate. If the average battery breaks after 9 years, then it means there would be a lot of free replacements under the 8 year warranty. Like for hard drives they give 3 years warranty but it’s normal to assume that it lasts 10-15 years and not break immediately after 3 years (exception: [western digital inserted a timebomb[(https://www.reddit.com/r/synology/comments/13uyk41/wd_red_pluspro_issue_drive_being_markd_as_warning/) to mark their drives as faulty via SMART as soon as the warranty is expired)
for the mitsubishi imiev most batteries are still working (different chemistry from modern ones) even if the last ones have been made in 2013