NOCO Genius Boost X GBX155 User Manual & Warranty page 8

Interface
1. Power LED Illuminates White when unit is «On». Will illuminate orange after the 60-second timeout countdown until the clamps are removed from
the Car Battery or the GBX155 is power cycled 'off' and back 'on' again.
2. Power Button Push to turn unit «on» & «off» or restart boost after 60-second timeout.
3. Reverse Polarity Error LED Illuminates red if reverse polarity is detected.
4. Cold LED Illuminates solid or flashes blue when internal temperature is too low.
5. Hot LED Illuminates solid or flashes red when internal temperature is too high.
6. Error LED Blinks "on" and "off" in various sequences (from 1 to 6 blinks) to convey error conditions.
7. Internal Battery Level Indicates the charge level of the internal battery.
8. Light Mode Button Toggles the ultra-bright LED light through 7 light modes: 100% > 50% > 10% > SOS > Blink > Strobe > Off
9. Boost LED Illuminates white when boost is active. If the unit is connected properly to a battery, the GBX155 will automatically detect a battery and
go into boost mode (LED flashes white when manual override feature is active).
10. Manual Override Button To enable, push and hold for three (3) seconds. WARNING: Disables safety protection and manually forces
Boost «On». Only for use when a battery voltage is too low to be detected.
11. Fast Charge LED Illuminates white when fast charge is active. Fast charge LED turns red (solid/blinking) when there is an error.