NOCO - 2500A Lithium Jump Starter

GBX752500A 12V Boost X UltraSafe Jump Starter

GBX75 How To — GBX75
HOW TO USE.
USER GUIDE DATASHEET

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How to jump start using your NOCO Boost X GBX75

Learn how to jump start using your NOCO Boost X GBX75 UltraSafe Lithium Jump Starter in three simple steps.

Learn how to use manual override on your NOCO Boost X GBX75 UltraSafe Lithium Jump Starter to begin jump starting a dead battery below 2-volts.

The GBX75 is a portable lithium-ion battery jump starter booster pack that delivers 2,500-amps for jump starting a car, boat, trucks and more.

Learn how to charge a phone or other USB devices using NOCO Boost X.

HOW TO JUMP START.

ATTACH CLAMPS.

POWER ON.

START VEHICLE.

POWER OFF.

Or power off/on to reset.

GBX75

LEDs

Power LED

Illuminates White when unit is "on." Illuminates orange after the 60-second timeout countdown.

Reverse Polarity

Unit is connected to the battery in reverse. Reverse the connections.

Hot/Cold LEDs

Illuminates solid or flashes Blue when internal temperature is too low. Illuminates solid or flashes Red when internal temperature is too high.

Error LED

Blinks “on” and “off” in various sequences (from 1 to 6 blinks) to convey error conditions.

Charge LEDs

Indicates the charge level of the internal battery.

Boost LED

Illuminates White when Boost is active. The LED flashes white when Manual Override feature is active.

Fast Charge

Illuminates White when fast charge is active. Fast charge LED turns red (solid/blinking) when there is an error.

GBX75

Buttons

Power Button

Push to turn unit “on” & “off” or restart boost after 60-second timeout.

Manual Override

To enable, push and hold for three (3) seconds. WARNING: Disables safety protection and manually forces Boost "On."

Light Mode

Toggles the ultra-bright LED light through 7 light modes: 100% > 50% > 10% > SOS > Blink > Strobe > Off

Boost X

TROUBLESHOOTING.

ERROR

REASON / SOLUTIONS

Solid Red

Reverse polarity detected. / Reverse the battery connections.

Single (1) Flash

Short circuit detected on battery clamps. / Remove all loads, reconnect clamps to battery.

Double (2) Flash

High voltage detected at clamps (the GBX45 is connected to a voltage system greater than 12V, such as 24V).

Triple (3) Flash

Bad battery cell detected. / When an internal battery cell has failed during charging.

Quadruple (4) Flash

Charge timeout error (i.e. the GBX45 has been in bulk charge for too long).

Sextuple (6) Flash

Back-Charge detected into the GBX45 through the clamps while in a Boost Mode (i.e. the GBX45 is in Manual Override and then connected to a system greater than 12V, such as 24V).

Hot LED: Solid

Unit is fully operational, but approaching upper temperature limit. / Allow the unit to cool.

Hot LED: Flashing

Unit is too hot to jump start, only the flashlight is available in this state. / Allow the unit to cool.

Cold LED: Solid

Unit is fully operational, but approaching lower temperature limit. / Allow the unit to warm up.

Cold LED: Flashing

Unit is too cold to jump start, only the flashlight is available in this state / Allow the unit to warm up.

Flashing Red

If charging the unit, check the cable or charger for damage / If charging a USB-C device, check cable or device for damage / If problem persists, contact NOCO support.

Solid Red

Connected Charger is Incompatible. / Unplug USB Cable, Turn Off/On the Unit, Use Different Charger.

GBX75 Manual Override — GBX75
MANUAL OVERRIDE
PUSH AND HOLD FOR 3 SECONDS.
WARNING: Disables safety protection and manually forces Boost X “On”. Only for use when a battery voltage is too low to be detected.

Connect, Charge, and Store.

GBX75 Accessories

The GBX75 is compatible with an array of NOCO accessories. Fast charge in the car with GBC011 or at home with the U65. Store and protect your GBX75 with the GBC103.

View All Accessories

GBC103

GBX75 EVA Protection Case

USD $34.95

GBC011

Boost X 65W 12V Car Charger

USD $12.95

U65

65W USB-C Charger

USD $69.95

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HOW TO USE.

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