In actuality, yes, the 90kWh packs are really "85's" and the original 85's were really 80's. Technically, Tesla falsely advertised the 85 as a 85 and the 90 as a 90. The 85 should have been originally sold as a 80, and the 90 should really have been sold as a 85.
As per Jason Hughes WK057's digging into the BMS on the cars, he discovered the following:
- Original 60 - ~61 kWh total capacity, ~58.5 kWh usable.
- 85/P85/85D/P85D - ~81.5 kWh total capacity, ~77.5 kWh usable
- 90D/P90D - ~85.8 kWh total capacity, 81.8 kWh usable
- Original 70 - ~71.2 kWh total capacity, 68.8 kWh usable
- 75/75D - 75 kWh total capacity, 72.6 kWh usable
- Software limited 60/60D - 62.4 kWh usable
- Software limited 70/70D - 65.9 kWh usable
Tesla, please stop making up specifications... | wk057's SkieNET...
The only correctly advertised batteries (Not counting software limited) were really the ORIGINAL 60kWh pack, and the current 100kWh pack. The 100kWh pack is really around 101kWh.
Ideally, I'd love it if we could get the original Chemistry cells in the 100kWh pack configuration (more cells and better cooling). That would yield a real world 90ish kWh pack with the reliability, better performance and slower degradation of the original 60's and 85's.