So we have for years been taught by Tesla that it is NOT good to routinely charge our car batteries to 100% unless you're taking a lot trip a couple of hours later. Which got me to thinking. Our phones and other devices that use batteries ... we charge them overnight all the time to 100%. Are we prematurely degrading those batteries? And ... is there a way to have our phones only charge to 80%? I just picked up a brand new Samsung 8+ and its battery lasts about a day longer than my 2 year old Samsung 6.