EVDRIVER wrote:I would say closer to 70 with acceptable pack temps, no headwind or grades @ 65 mph. How do you get 250 wh/mile at 70? That's assuming the car consumes 250 at all speeds which is not accurate and making these comparisons to the Tesla is not a very accurate measure at highway speeds. That is an extremely low penalty to pay at highway speeds and the Leaf does not have astonishing aerodynamics. Since the Leaf has 19.2kwh to work with, even if it only consumed 250wh per mile that would be 76.8 miles best case. Remember, the car cycles to 80% DOD and it's quite sly to state a range based on 100% DOD and lowest possible consumption cycle.
I suspect we don't have to take another 20% off the Leaf pack size for our range guestimates. I say this because we aren't told how many gallons of fuel our fuel tank actually holds but how much is usable. Same for cell phone and laptop batteries - the battery might be capable of 4 1/2 hours of use but the management system is programmed to only allow 4 hours of talk time.
Nissan says in their literature that the battery holds 24KWh. Reports from Leaf tour attendees suggest that Nissan is only allowing us to use the pack from 90% state of charge to 10% state of charge - they're already derating the pack to 80%. This means that the 100% we see on our fuel gauges is only 80% of what the battery can provide.
The battery is LiMn - which is fully charged at about 4.1V. The battery manufacturer lists 14.4V for a 4-cell module - only 3.6V per cell. That confirms for me that the manufacturer is already understating cell capacity - which seems to reinforce that we are likely to have all 24KWh available for our use.
If we can keep our consumption at 240wh/m, 100 mile range should be achievable.
Lithium cells perform better when hot - so we're likely to have longer range from a full pack in the summer.
Capacity drops when cold. If the pack isn't heated, rang will drop in the winter (unless the pack is over sized a bit to give us all-season performance)
Capacity will drop as the battery ages. Minimum range can be maintained for a longer time by oversizing the pack.
Energy use will go up in the winter because cold air is more dense - more aerodynamic drag.
All the other effects of wind, driving style, passenger/cargo weight, terrain, and tire inflation apply as well.