NOCO Genius GENIUS1AU User Manual & Warranty page 8

1.) Charge LED indicates the connected battery(s) state-of-charge.
2.) Mode LED Indicates the Charge Mode the charger is currently in. Push the
MODE button to cycle through charge Modes.
3.) «Press and Hold» Mode LED Mode button must be pressed and held for 3
seconds to enter the mode.
4.) Standby LED Illuminates when the charger is in Standby Mode, the charger is
not charging or providing any power to the battery.
5.) Overvoltage Error LED Illuminates solid Red; Battery Voltage is above Protect
voltage.
6.) Bad Battery Error LED Illuminates solid Red when connected battery will not
hold a charge.
7.) Reverse Polarity Error LED Illuminates solid Red when reverse polarity is
detected.
8.) Mode Button Push to cycle through charging Modes.