BuckMkII wrote:...how many years are expected before the range on a charge drops to 20 miles, on 30-35 mph surface streets.? What about to 10 miles, which we could handle if we can get on the power cables at work every day?
We would probably drive the car about 5000 miles per year if we used it for all our work commuting and some errands on evenings and weekends, at least as long as we could rely on >25-30 miles per day.
It only requires ~ 3 kWh to drive a LEAF ~"20 miles, on 30-35 mph surface streets".
That means you will be able to do that after your LEAF's pack has lost ~85% of original available capacity, far more than any LEAF pack has lost to date, even after the most miles driven, and under the most extreme conditions of use.
As long as You buy one with a reasonable number of miles, the battery will probably still meet your needs when you decide to sell the car for other reasons.
Of course, depending on your health and age, you might not survive the battery pack, or the LEAF