Reverse-engineering FlyBuds 3 to diagnose a 105-second battery collapse
How a 96-byte firmware extension exposed raw battery voltage over Bluetooth and separated a real power failure from a misleading percentage display.
Tag
#batteries
FlyBuds 3 battery diagnosis and firmware telemetry
A sealed-device investigation that traced a failing earbud from misleading battery percentages to a measured 105-second voltage collapse.