EV batteries are reliable. "Range Degradation" is mostly a disproven myth. [0] Range figures vary with driving style, but that's the exact same issue with gas range, gas cars just had very bad/loose/nonexistent feedback on driving style inefficiency.

[0] Outside of the non-temperature controlled batteries of "classic" Nissan Leaf models and early Tesla models, but even then "range degradation" is largely overstated and statistically very few batteries were ever replaced in the lifetime of those cars.