NOCO Boost X GBX55
For owners of V8 cars, half-ton pickups and mid-size SUVs who want a light pack that recharges fast over USB-C. It is the sweet spot of NOCO’s Boost X line for most drivers.
Amazon $174.95$174.95
The NOCO Boost X GBX55 rates 3.3 among trucks and v8s jump starters; the NOCO Boost X GBX45 rates 3.1 among cars and suvs ones. The NOCO Boost X GBX45 costs $50 less ($124.95 vs $174.95).
NOCO Boost X GBX45
#5 in Cars and SUVsFull review
For car and small-SUV owners who want a compact pack that refills fast from any USB-C charger. It costs a little more than the GB40 but recharges several times faster.
Amazon $124.95$124.95
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different engine size classes (trucks and v8s and cars and suvs), and each is scored against the reference points for its own class, so a rating says how well each does among its own engine size peers. How we rank explains each factor.
| Factor weight | NOCO Boost X GBX55 | NOCO Boost X GBX45 |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 40% | 40 $174.95 for its size | 23 $124.95 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 90 manual override, rated to -4 °F, USB-C charging, IP65 |
| Capacity 15% | 27 46 Wh battery | 28 31 Wh battery |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| NOCO Boost X GBX55 | NOCO Boost X GBX45 | |
|---|---|---|
| Starting | ||
| Rated engines | 7.5 L gas, 5 L diesel | 6.5 L gas, 4 L diesel |
| Peak amps (maker) | 1,750 A | 1,250 A |
| Voltage | 12 V | 12 V |
| Manual override | Yes | Yes |
| Lowest operating temperature | -4 °F | -4 °F |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity | 46 Wh | 31 Wh |
| USB-C input | 60 W | 60 W |
| Recharge time | 1.2 hours | 0.8 hours |
| USB outputs | USB-C 60 W, USB-A 10 W | USB-C 60 W, USB-A 10 W |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | IP65 |
| Dimensions | 7.66 x 4.9 x 2.5 in | 6.83 x 3.28 x 2.08 in |
| Weight | 2.6 lb | 2.2 lb |
| Warranty | 1 year | 1 year |
| Released | 2021-11 | 2021-11 |