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100d loaner is so much faster at lower SOC vs my p85dL - why is that?
- Thread starter tubaprde
- Start date
ucmndd
Well-Known Member
Tech has improved. Also a bigger pack to draw from. So for a given SoC, more energy is available. Also could be how they have programmed it.
On my 2022 MS, the power doesn't really drop off until well under 20% SoC. At the same time, 100% SoC doesn't make a difference in its acceleration times that I can measure vs even 75% SoC.
On my 2022 MS, the power doesn't really drop off until well under 20% SoC. At the same time, 100% SoC doesn't make a difference in its acceleration times that I can measure vs even 75% SoC.
ucmndd
Well-Known Member
I’m sure there have been other improvements that affect this along the way but it would not be the same improvement inherently present in the 100kwh batteries.
The 90 packs have the same number of cells as the 85, they are just higher energy density.
Olle
Active Member
It's the BMS programming, made to reflect the sensitivities of the cells. Damage can result from for example too low voltage and too low SOC, which BMS is programmed to avoid.
It's a triple whammy compounding effect for the 85 pack compared to a newer 100:
It's a triple whammy compounding effect for the 85 pack compared to a newer 100:
- fewer cells in parallell -> more current per cell
- aged -> more resistance in each cell
- both more current and more resistance -> min voltage happens much sooner -> BMS limits the current
- With voltage already at a minimum, the resulting power loss is compounded by the current limit.
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