Feature Request: Battery Life Preservation Setting

Would it be possible to add a battery life preserver that stops charging at a set amount, like 80%, for instance?  This is becoming the industry norm for devices with lithium batteries now and I typically charge my watch from the 45% range to 80-85 and only go further when high drain is immediately expected in order to preserve the service life, but I've overshot a couple times, particularly when connected to USB