kullenberg
Member
A question for Tom: What degrades the bat. more; mileage or time? Since I drive so little (4000 mi per yr.) time would be determining factor for me. Thanks
kullenberg said:A question for Tom: What degrades the bat. more; mileage or time? Since I drive so little (4000 mi per yr.) time would be determining factor for me. Thanks
To be clear, it's not mileage per se, but charge/recharge cycles that degrades the batteries.kullenberg said:It looks like there is some degradation with mileage. I still don't have a feel for what time will do.
woof said:To be clear, it's not mileage per se, but charge/recharge cycles that degrades the batteries.kullenberg said:It looks like there is some degradation with mileage. I still don't have a feel for what time will do.
As for degradation over time it depends on the chemistry of the battery, which for the i3 we really don't know as that information is proprietary. All we can do is assume there is some, and that it'll be worse at 100% charge, and at elevated temps. Presumably the i3 BMS will protect against both extremes, and one need do nothing other than plug it in when you can and let BMW take care of it.
For a good treatise see:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
--Woof!
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