[NomoTesla]

Shallow charge cycles are better for the battery's longevity and long-term degradation profile than deep charge cycles that recover 50% or more of the battery's capacity. Li-ion batteries prefer a 50% state of charge when not being used.

I only charge for the miles I expect to use and most often keep the car in the 30%-60% range. Unless you drive a lot of unexpected miles (I do not), there's no good reason to keep the car charged to 80% if you aren't going to drive the miles. A full gas tank doesn't cause the gas tank to shrink, but the opposite is true when dealing with EVs and battery charging.

Also, folks new to EVs should be aware that most manufacturer battery warranties have limited coverage for degradation. Usually the battery has to degrade > 30% to trigger a repair or replacement.