To estimate the number of charge cycles, I refer to the battery manufacturer. The number of charge cycles is dependent on the depth of battery discharge (DoD)- here. See page 4. My battery pack holds 8.9 kWatt-hours. At 200 watt-hours per mile, I use 200 x 30 = 6 kWatt-hour. So, the depth of discharge is 6 / 8.9 = 71%. For this depth of discharge, the bar graph indicates about 650 charge cycles.

When I get lithium batteries, the number of charge cycles will be more like 3000. The future is bright for electric vehicles!

For an EV, the range is dependent on 3 things. The combination of the 3, determine the watt-hours per mile traveled. First, is rolling resistance. It is constant regardless of the car's speed. The second is aerodynamics. At low speeds, it is small. The third is the energy required to accelerate the vehicle. With AC motors, the acceleration energy is partially recovered thru regerative braking ie. decelerating, where the kinetic energy is recovered as power, and put back into the batteries. On average, my EV requires 220 watt hours per mile. If I really work at it, I can dreve with 180 watt hours per mile. And I often do, primarily by driving slower than 40 MPH, and by accelerating slowly. No one complains.