Busfolder said:Most of my charging (2016 94Ah REX) over the 26 months I've had my i3 has been done with 50kW rapids, as I mainly use the car for long trips (rarely under 100 miles...)
I've not noticed any significant loss of capacity, but if this happens I want it to do so before the battery's warranty expires (so BMW picks up the tab...)
So I'm not planning to change this strategy, as eventually I want to replace the original battery with a higher capacity unit (120Ah+?)
Chris
[How do you have a 2016 94aH? :?/quote]
I bought it used (at 8300 miles in its first year) in late December 2017, so I guess it was an early UK 94Ah car.
Just passed 28000 enjoyable and economical miles (by careful choice of public chargers- UK pricing varies wildly!)
Have recently installed the BMW Connected app, and much appreciating the remote preconditioning capability!
Chris
Apparently in Europe, the model year of a car is the year in which it was built. If an i3 built in late 2016 were classified as a 2017 model in the U.S. (e.g., a 94 Ah i3), it would be a 2016 model in Europe.Busfolder said:I bought it used (at 8300 miles in its first year) in late December 2017, so I guess it was an early UK 94Ah car.
vreihen said:Depending on who you ask...
Fast charging (DC or 32A Level2)
Discharging to 0%
Charging to 100%
Long-term parking
Charging too frequently
High number of discharge cycles
Charging when hot
Charging when cold
Looking at your car in the wrong way :lol:
My $0.02 is to let the battery management system do the worrying and just enjoy your car, trusting that the BMW engineers have picked the best set of tradeoffs to ensure a long and productive vehicle life.....
panamamike said:...what would be the best practices? ... discharge to 0 is very bad and charging frequency
eNate said:panamamike said:...what would be the best practices? ... discharge to 0 is very bad and charging frequency
It's not possible to drive the i3 to zero. It holds a substantial reserve. Zero indicated is virtual. Same at 100%.
Frequency of charging is said to have no effect on battery health. One hundred 10% charges has the same degradation as ten 100% charges. Leaving it plugged in won't overcharge it.
The most impactful degradation seems to be frequent DC fast charging.
panamamike said:eNate said:panamamike said:...what would be the best practices? ... discharge to 0 is very bad and charging frequency
It's not possible to drive the i3 to zero. It holds a substantial reserve. Zero indicated is virtual. Same at 100%.
Frequency of charging is said to have no effect on battery health. One hundred 10% charges has the same degradation as ten 100% charges. Leaving it plugged in won't overcharge it.
The most impactful degradation seems to be frequent DC fast charging.
That's good to know. Too bad DC fast charging is a negative. I suppose the next worst thing is not pre-conditioning the battery? Meaning if it's very cold or hot it's beneficial to precondition vs. using the battery at the extreme temps. I say this because different people have experienced different levels of battery degradation. Seems those in the more extreme climates, hot or cold suffer more capacity loss.
panamamike said:I suppose the next worst thing is not pre-conditioning the battery? Meaning if it's very cold or hot it's beneficial to precondition vs. using the battery at the extreme temps.
eNate said:panamamike said:I suppose the next worst thing is not pre-conditioning the battery? Meaning if it's very cold or hot it's beneficial to precondition vs. using the battery at the extreme temps.
I don't **think** so.
A battery is most efficient when it's warm, it's going to get hotter than ambient under use, and cold temps make make it less efficient in the here and now, but I don't believe has any impact to longevity.our overall health
Is there a proven disadvantage of charging it daily to 100% (AC)?
vreihen said:Depending on who you ask...
Fast charging (DC or 32A Level2)
Discharging to 0%
Charging to 100%
Long-term parking
Charging too frequently
High number of discharge cycles
Charging when hot
Charging when cold
Looking at your car in the wrong way :lol:
My $0.02 is to let the battery management system do the worrying and just enjoy your car, trusting that the BMW engineers have picked the best set of tradeoffs to ensure a long and productive vehicle life.....
Arm said:Indeed...life's way too short to sit there and worry about my car's battery pack. I don't plan on keeping it forever and lease most of my cars anyway so such issues are absolutely no concern to me.
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