NOCO Genius GENIUS2, User Manual & Warranty, Page: 7 / 64

EN
Understanding Error LEDs
Error Conditions will be indicated by the following LEDs.
LED Reason/Solution
Possible battery short / Battery will not hold a charge. Have battery checked by a professional.
Battery voltage is too high for the selected charge mode. Check the battery and charge mode.
Reverse polarity. Reverse the battery connections.
Charger is in Standby mode or Battery voltage is too low for charger to detect. Solid
Solid
Solid
Solid
Flashing
Charger internal temperature too high / Charger will resume function once the Charger internal temperature drops.
Charger ambient temperature too cold / Charger will resume function once the Charger ambient temperature rises.
LED Explanation
25%
Red LED The 25% Charge LED will slowly pulse “on” and “off”, when the battery is less than 25% fully charged. When the battery is
25% charged, the red Charge LED will be solid.
75%
Orange LED The 75% Charge LED will slowly pulse “on” and “off”, when the battery is less than 75% fully charged. When the battery is
75% charged, the orange Charge LED will be solid.
The 50% Charge LED will slowly pulse “on” and “off”, when the battery is less than 50% fully charged. When the battery is
50% charged, the red Charge LED will be solid.
100%
Green LED
Pulsing Green LED - Bulk charge complete, optimizing battery for extended life.
Solid Green LED - When the battery is 100% charged, the Charge LED will be solid green.
50%
Red LED
Maintenance
Green LED
After the battery is fully charged, the charger will continue monitoring the battery, and provide ongoing maintenance and
optimization. The 100% Charge LED will pulse “on” and “off” slowly during these cycles. The charger can be left connected
to the battery indefinitely.
Understanding Charge LEDs.