I have a related gripe: Why do devices feel the need to make a sound and flash the display when they are finished charging? How often have people thought, "I w

I have a related gripe: Why do devices feel the need to make a sound and flash the display when they are finished charging? How often have people thought, "I want to go jogging now but I will wait until my phone is charged." More often they are asleep and it wakes them. The "unplug device now to save energy" is a dubious harassment notice, especially when a hungry device goes into several charge cycles per night. That is really the sign of a badly implemented charge method with insufficient hysteresis. My Dad had a Samsung phone he hated because he said, "It whimpers in the night" and turning off sound meant turning off the ringer.