NOCO Boost X GBX75
The GBX75 is rated at 2,500 amps peak for gas engines up to 8.5 liters and diesel engines up to 6.5 liters, with a 74 Wh battery. It is listed to UL 2743 in the Intertek directory.
Checked against sources on by the TrueAmps editorial team.
- Peak current
- 2,500 A
- Internal battery
- 74 Wh
- Gas engines up to
- 8.5 L
- Diesel engines up to
- 6.5 L
- Weight
- 3.77 lb
- Safety listing
- UL 2743
Ratings are the manufacturer's own, from NOCO's spec page, checked September 24, 2026. Safety listing: ETL (Intertek), directory record, checked September 24, 2026.
See NOCO Boost X GBX75 on Amazon (paid link)
Engine rating against the rest of the line
GBX75 against the GB70
These two are the ones most people weigh against each other. By NOCO's published numbers the GBX75 is ahead on peak current (2,500 A against 2,000), on engine range (8.5 L gas and 6.5 L diesel against 8.0 and 6.0), on battery (74 Wh against 56), and on weight (3.77 lb against 4.18).
One line runs the other way: the GB70 spec page lists a 12 V accessory output rated at 15 A, and the GBX75 spec page lists no such port.
Next size down and up
| Model | Peak A | Wh | Gas L | Diesel L |
|---|---|---|---|---|
| NOCO Boost X GBX75 | 2,500 | 74 | 8.5 | 6.5 |
| NOCO Boost HD GB70 | 2,000 | 56 | 8.0 | 6.0 |
| NOCO Boost Pro GB150 | 3,000 | 88 | 9.0 | 7.0 |
All jump starters side by side
Head to head: GB70 vs GBX75
Boost X GBX75: questions people ask
Is the GBX75 better than the GB70?
On NOCO's own spec pages it is rated higher on peak current, engine size and battery capacity, and it is lighter. We have not tested either unit.
Check the Boost X GBX75 listing on Amazon (paid link)