smaster553 wrote: ↑
Sat Jul 31, 2021 6:02 am
I would be interested in the 90kW to increase range to 300+ miles. Question is this being a lighter car how come this car has same range (for the same size battery) than a heavier car. Is it something to do with how they manage it.
A 90 kWh
which is power, not energy) battery would be extremely heavy for an i3 using the most energy-dense cells currently available. The i3's tires, suspension, and maybe brakes and wheels would have to be upgraded to support the additional weight. So this would be a very expensive upgrade even above the cost of the high cost of a 90 kWh battery pack.
Weight doesn't affect the range of an EV as much as it does an ICE vehicle because an EV's regen can be stronger with additional weight during urban driving, and weight doesn't have much effect on the highway range of any vehicle. However, highway range is worse for vehicles with poorer aerodynamics like an i3. Our i3 has been driven in urban and suburban settings almost exclusively since we bought it in November, 2014. Its lifetime efficiency is 5.2 mi/kWh which would be difficult to match for most EV's due to their heavier weight.
2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE