Understanding Charge Leds - NOCO Genius Boost+ GB40 User Manual

before starting. If the vehicle does not start right away,
wait 20-30 seconds and try again. Do not attempt
more than five (5) consecutive jump starts within a
fifteen (15) minute period. Allow the GB40 to rest for
fifteen (15) minutes before attempting to jump start the
vehicle again.

Understanding Charge LEDs.

The GB40 has four (4) Charge LEDs - 25%, 50%, 75%
and 100%. These Charge LEDs indicate the internal
battery's state-of-charge (SOC). See below:
LED
25%
Red LED
25% 50% 75% 100%
50%
Red LED
25% 50% 75% 100%
75%
Yellow LED
25% 50% 75% 100%
100%
Green LED
25% 50% 75% 100%
Explanation
The 25% Charge LED will 'breath'
on/off while charging and will be solid
Red when the internal battery is 25%
charged.
The 50% Charge LED will 'breath'
on/off while charging and will be solid
Red when the internal battery is 50%
charged.
The 75% Charge LED will 'breath' on/
off while charging and will be solid
Yellow when the internal battery is
75% charged.
The 100% Charge LED will 'breath'
on/off while charging and will be solid
Green when the internal battery is fully
charged.
When connected to a USB charger,
no other charge LEDs will be
illuminated. Once disconnected from
the charger, all four (4) Charge LEDs
will be illuminated when the internal
battery is between 75%-100%, and
the unit is powered "ON".