Jon Gargis on Twitter: "My @fitbit Charge 2 won't function or hold a charge. One instance had it repeatedly flash low-battery sign; charging to full led it to displaying full battery icon
FITBIT CHARGE 2 Version 22.58.0 Sleep, Distance + Heart Rate Activity Tracker £16.80 - PicClick UK
Solved: Charge 2 Firmware Release (22.58.0) - Fitbit Community