Key facts
Start here
NOCO Genius Boost GB40 Lithium Jump Starter User Guide
The NOCO Genius Boost GB40 is an ultra-compact, portable lithium-ion jump starter designed for 12-volt lead-acid batteries in cars, boats, motorcycles, and other vehicles. It features spark-proof technology and reverse polarity protection to ensure safe operation for users of all skill levels. The device includes a built-in USB battery pack and LED flashlight, serving as a versatile emergency tool.
Read onlineNOCO GB40 specifications
| Battery Type | 12-volt lead-acid batteries |
|---|---|
| Low Voltage Limit | down to 2-volts |
| USB IN Charging | 2.1 Amps |
| Energy Saving Auto Shut Off | seven (7) hours |
All NOCO GB40 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What type of batteries is the GB40 suitable for?
The GB40 is for jump starting 12-volt lead-acid batteries only.
From: NOCO Genius Boost GB40 Lithium Jump Starter User Guide
What happens if the battery is below 2 volts?
If the battery is below 2 volts, the Boost LED will be 'Off', indicating the GB40 cannot detect the battery.
From: NOCO Genius Boost GB40 Lithium Jump Starter User Guide
What vehicles is the GB40 suitable for?
It is suitable for cars, boats, motorcycles, ATVs, lawn mowers, RVs, tractors, and trucks.
What happens if the battery is below 2 volts?
The Boost LED will be 'Off', indicating the unit cannot detect the battery, but a Manual Override feature can be used with extreme care.