What the 3000 A figure is really worth
The GB150's 3000 A peak current and its stated engine compatibility (petrol up to 9 L, diesel up to 7 L) match the official spec sheet, consistent with its position as the most powerful model in the 12 V range.
From 4000 A to 3000 A: not a step down in power
Older, unrevised product listings still advertise a GB150 at 4000 A. The current official spec sheet and the manufacturer's own website now show 3000 A for the same product in production.
The built-in voltmeter: a genuine differentiator
Unlike the rest of the Boost range, the GB150 includes a voltmeter that shows the real voltage of the connected vehicle's battery. It is a genuine diagnostic tool in its own right: instead of just seeing that a battery is flat, you can read its exact voltage before and after the jump start, useful for judging whether the vehicle's battery deserves to be replaced rather than recharged indefinitely.
UltraSafe protection, the same as the rest of the range
UltraSafe technology protects against reverse polarity and sparking: the clamps stay inert until the connection is correctly made. The casing is IP65-certified, with an overmolded rubberized shell, and the product carries FCC, RoHS, ETL and UN38.3 certifications (lithium battery transport).
No safety recall has been identified for this model to date.
What is not yet known
The claimed operating range runs from -20 °C to +50 °C, a manufacturer figure. No protocol-tested measurement of cold-weather starting performance (an actual start at a controlled temperature) has been found for this model, a limitation shared with the rest of the Boost range.
Against the Noco range
| Criterion | GB70 | GBX75 | GB150 |
|---|---|---|---|
| Peak current | 2000 A | 2500 A | 3000 A |
| Max diesel | 6.0 L | 6.5 L | 7.0 L |
| Starts per charge | ≈ 40 | ≈ 50 | ≈ 80 |
| Booster recharge | USB-C | Fast USB-C | USB, slower |
The GB150 outperforms the GBX75 on amperage, diesel compatibility and the number of starts, and yet costs less. What the GBX75 keeps in return is a noticeably faster USB-C recharge for the booster itself, a real convenience for anyone who recharges the unit often. For everyday use on a typical diesel, the GB70 remains the sensible choice: cheaper, and enough for the vast majority of vehicles.
Price and availability
The GB150 is priced at around 250 to 275 € depending on the retailer, with no sign of widespread stock shortages at the time of writing.
Who this jump starter suits
This product suits anyone who regularly needs to restart large diesel engines (camper van, tractor, boat) or assist several vehicles in a professional or community setting, where the 80 starts per charge and the diagnostic voltmeter really earn their keep.
It is a much poorer fit for typical home use: for a private car, a GB50 is more than enough, for a fraction of the price and weight. For a 24 V heavy truck, no model in this range is suitable.
