Our Verdict
The NOCO GBX55 is the GB40's bigger sibling for drivers whose vehicles exceed the GB40's capability. 1750A, UltraSafe clamps and 18W USB-C fast charging cover diesel vans and large engines that the GB40 won't start. If you drive a diesel van or large diesel car, the GBX55 is the correct choice.
Pros & Cons
✓ Pros
- 1750A covers diesel vans up to 6.0L and large petrol engines up to 8.0L
- UltraSafe spark-proof clamps work on completely dead batteries without spark risk
- Integrated safety LED flashlight works as an emergency beacon in breakdown situations
- Can jump-start up to 60 times on a single charge
- USB-C 18W fast charging serves as a genuine power bank for devices
✗ Cons
- Heavier at 680g — more glove-box weight than GB40
- More expensive than GB40 for drivers whose cars the GB40 already covers
- Premium pricing for those with standard vehicles
Key Specifications
| Amps | 1750A |
|---|---|
| Engines | 8.0L petrol / 6.0L diesel |
| Clamps | UltraSafe spark-proof |
| Charge capacity | 60 jump starts |
| USB-C | 18W fast charge |
| Weight | 680g |
Performance
The NOCO GBX55 is the GB40's bigger sibling for drivers whose vehicles exceed the GB40's capability. 1750A, UltraSafe clamps and 18W USB-C fast charging cover diesel vans and large engines that the GB40 won't start. If you drive a diesel van or large diesel car, the GBX55 is the correct choice. On paper the headline numbers are amps of 1750A, engines of 8.0L petrol / 6.0L diesel, clamps of UltraSafe spark-proof, charge capacity of 60 jump starts, usb-c of 18W fast charge, weight of 680g. Its standout is that 1750a covers diesel vans up to 6.0l and large petrol engines up to 8.0l
Build Quality & Design
Beyond that, owners and the spec sheet point to a few more genuine strengths. UltraSafe spark-proof clamps work on completely dead batteries without spark risk. Integrated safety LED flashlight works as an emergency beacon in breakdown situations. We can't bench-test durability, but the depth of positive long-term owner feedback is the best available proxy for how it holds up.
Value for Money
It isn't flawless. Heavier at 680g — more glove-box weight than GB40. More expensive than GB40 for drivers whose cars the GB40 already covers. Premium pricing for those with standard vehicles. Whether those matter depends entirely on how you'll use it. At the premium price point, the trade-offs are easy to live with for the right buyer. It's the right call for The NOCO GBX55 is the GB40's bigger sibling for drivers whose vehicles exceed the GB40's capability. 1750A, UltraSafe clamps and 18W USB-C fast charging cover diesel vans and large engines... Look elsewhere if you're among Drivers of standard petrol cars under 6.0L — the GB40 covers those vehicles at half the cost.
Final Verdict
The NOCO GBX55 is the GB40's bigger sibling for drivers whose vehicles exceed the GB40's capability. 1750A, UltraSafe clamps and 18W USB-C fast charging cover diesel vans and large engines that the GB40 won't start. If you drive a diesel van or large diesel car, the GBX55 is the correct choice.
Check Price on Amazon ↗FAQ
Is the NOCO Boost X GBX55 1750A Jump Starter worth the money?
The NOCO GBX55 is the GB40's bigger sibling for drivers whose vehicles exceed the GB40's capability. 1750A, UltraSafe clamps and 18W USB-C fast charging cover diesel vans and large engines that the GB40 won't start. If you drive a diesel van or large diesel car, the GBX55 is the correct choice. The NOCO GBX55 is the GB40's bigger sibling for drivers whose vehicles exceed the GB40's capability. 1750A, UltraSafe clamps and 18W USB-C fast charging cover diesel vans and large eng
Who should NOT buy the NOCO Boost X GBX55 1750A Jump Starter?
Drivers of standard petrol cars under 6.0L — the GB40 covers those vehicles at half the cost.
Is the NOCO Boost X GBX55 1750A Jump Starter available in the UK and US?
Yes — we list both Amazon UK and US links. Always verify voltage compatibility (UK 230V, US 120V).
Alternatives to Consider
NOCO Boost Plus GB40 1000A Jump Starter
9.4/101000A, 6.0L petrol / 3.0L diesel, reverse polarity protection, USB charging. The mechanic's recommendation.
Check Price ↗
NOCO Boost Plus GB40 Jump Starter
9.3/101000A, jumps petrol to 6L diesel, USB powerbank, LED torch, spark-proof. The jump starter benchmark.
Check Price ↗
Ring RAC845 Compact Car Jump Starter 600A
8.3/10600A, under £40, pocket size, reverse polarity. The ultra-budget emergency jump starter.
Check Price ↗Or see full comparisons: vs NOCO Boost Plus GB40 1000A Jump Starter, vs CTEK MXS 5.0 Battery Charger, vs NOCO Boost Plus GB40 Jump Starter