PowerMeter 9: Flashing Yellow – The PowerMeter is reading a cadence and waking up from sleep mode Flashing Red – The PowerMeter is connected to a cable and charging Flashing Green – The PowerMeter is connected to a cable and charged to 100% Quickly flashing Green and Red – Zero Offset Calibration is in progress Quickly flashing Green – Zero Offset calibration successful Quickly flashing Red – Zero Offset calibration failed PowerMeter 7 rechargeable: Flashing Yellow – The PowerMeter is reading a cadence and waking up from sleep mode Glowing Red – The PowerMeter is connected to a cable and charging Glowing Green – The PowerMeter is connected to a cable and charged to 100%