this post was submitted on 16 Jun 2023
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On a Phone, people are already conditioned to have their phone work all the time, no matter what you do to it, and there is an advertised Maximum Battery Capacity.
People don't do the 80/20 rule on Phones because that's outrageous to them.
But EV Manufacturers have built in the 80/20 rule into their cars. When you do long distance EV trips, the Route Planner will automatically tell you where the next charger that you will arrive at 20%-ish battery capacity will be and route you there. And the car will stop charging itself at 80% and you'll be ready to go.
Phones on the other hand, tell you "Hey moron, I'm at 30% you should charge me!" And most phones don't have a Battery Protection setting to cut charging at 80% (Samsung added this about a year ago to their phones)
If you shouldn't charge over 80%, why don't manufacturers just report a battery at 80% its "real" capacity as 100% charged? Same for the lower margins. It would probably make things easier for people to understand.