From what I remember, a li-ion cycle means a full range charge and discharge. Charging 10 percent is just 10 percent of a cycle. And discharging at low charge s

From what I remember, a li-ion cycle means a full range charge and discharge. Charging 10 percent is just 10 percent of a cycle. And discharging at low charge state causes more wear. Also fully charging is worse than just going to 70 percent charge. So ideally you hover around the middle with small cycles. Whether this is all true for Tesla's batteries I don't know. But I would assume that they do count a partial charge as a partial cycle and you shouldn't be penalized for intermittent charging. I'd certainly try to stay above 30 percent charge as much as possible. And use slow charging, because that's less wear too. So plugging it in every night at home should be less wear than the eventual quick charge from low. Even if the warranty doesn't distinguish these nuances, it's probably easier to manage regular home charging with better results too.