01-15-2022, 05:50 AM | #2 |
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Sorry to sound facetious. But charge it whenever your electricity is cheapest, and charge it to whatever % works for you.
For example, if I charge to 80%, in a normal week I would need to charge twice. Whereas if I charge to 100%, it means only having to charge once a week. Normally on a Friday night, in case I need it full for the weekend. |
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01-15-2022, 09:40 AM | #3 | |
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Quote:
It is worth noting that all batteries have built in headroom: actual battery size versus usable. The battery warranty is based on a 30% reduction in the usable capacity which is greater than 30% of full capacity. To put this into context, Tesla offers a 13.5kWh home battery. Under its energy plan, Tesla can discharge and charge the battery once a day for 10 years under warranty with a residual battery capacity of 80%. In sum, if you are a 3 year ditch and switch EV owner, then charge in anyway that you want. More of a concern is the 12VDC battery. |
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01-15-2022, 03:19 PM | #4 |
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On AC I charge to 100%,on DC toll it throttles hard (technically 94% but usually dips off at mid to high 80's)
I try still to 80 on DC as a rule unless need the range, but on AC fill it up, as long as its not sat at a high SOC then it's fine. |
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01-15-2022, 04:25 PM | #5 |
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As BMW recommends that when the car is left idle for a long period (ie; some weeks) it should be left fully charged and plugged into an EVSE, then clearly BMW isn’t that worried about high SOCs and damaged cells.
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01-15-2022, 04:32 PM | #6 |
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Fair enough, general consensus in the ev community is to not leave a car at very high SOC for extended periods, perhaps BMW have a cycle system to discharge and recharge if its left on an EVSE though.
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