Pro tip: If the app is draining your phone's battery, set your location services from "Always" to "While Using The App" and disable GPS tracking on your tracker. The app drains my
Battery Empty - Fitbit Community
Battery full but app says battery empty. Not synci... - Fitbit Community
Is the battery dead? Won't turn on unless plugged in, but displays this. : r/fitbit
Solved: One Tracker not showing low battery icon - Fitbit Community