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 $174.95The NOCO Boost X GBX55 rates 3.3 among trucks and v8s jump starters; the NOCO Boost GB50 rates 2.6 among cars and suvs ones. The NOCO Boost GB50 costs $25 less ($149.95 vs $174.95).

For drivers of cars, crossovers and mid-size SUVs who want a proven NOCO pack with headroom over the GB40. Check the GBX55 price first, since it charges far faster for similar money.
Amazon $149.95Prices were last checked October 30, 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 GB50 |
|---|---|---|
| Overall rating | 3.3/5 | 2.6/5 |
| Value 40% | 40 $174.95 for its size | 0 $149.95 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 77 manual override, rated to -4 °F, USB-C charging, IP65 |
| Capacity 15% | 27 46 Wh battery | 38 35 Wh battery |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| NOCO Boost X GBX55 | NOCO Boost GB50 | |
|---|---|---|
| Starting | ||
| Rated engines | 7.5 L gas, 5 L diesel | 7 L gas, 4.5 L diesel |
| Peak amps (maker) | 1,750 A | 1,500 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 | 35 Wh |
| USB-C input | 60 W | 10.5 W |
| Recharge time | 1.2 hours | 5 hours |
| USB outputs | USB-C 60 W, USB-A 10 W | USB 10.5 W |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | IP65 |
| Dimensions | 7.66 x 4.9 x 2.5 in | 8.58 x 3.42 x 3.16 in |
| Weight | 2.6 lb | 2.7 lb |
| Warranty | 1 year | 1 year |
| Released | 2021-11 | 2019-04 |