Last updated September 14, 2026
NOCO Boost X GBX75 Review
The Boost X tier NOCO built for the gap between the GB70 and the GBX155 — 2,500A, an 8.5L gas / 6.5L diesel rating, and the same 60W USB-C fast charging as the GBX45.
The verdict
The GBX75 is the answer for someone whose engine is a little too much for the GB70's 2,000A rating but who doesn't want to pay GBX155 money or carry seven and a half pounds. It matches the GBX155's diesel-adjacent confidence on a V8 or a light diesel, recharges from empty in under two hours over USB-C, and still fits under a seat rather than in a toolbox. It's a real step up in price over the GB70, and if your vehicle is a four- or six-cylinder commuter car, that GB70 (or the smaller GBX45) already has you covered for less.
Typical price: ~$250 (typical street price — current price shown on Amazon)
Buy on AmazonWhat we like
- +2,500A rating covers gas engines up to 8.5L and diesels up to 6.5L — a genuine step above the GB70's 8.0L/6.0L
- +60W USB-C PD in and out: full recharge in about 1.8 hours, boost-ready in 5 minutes, and it fast-charges a laptop
- +400-lumen flashlight with 7 modes including SOS and strobe — brighter than the GB40/GB70's units
- +UltraSafe 2.0 clamps: spark-proof, reverse-polarity protected, with the revised thermal management NOCO added to the Boost X line
- +3.77 lb — noticeably lighter than the GBX155 for a rating that covers most gas V8s and mid-size diesels
What to know
- −Same -4°F operating floor as the rest of the NOCO line — no cold-weather edge over the GB70
- −A real jump in price over the GB70 for a rating most drivers won't need
- −No 12V accessory output on this model — USB-C and USB-A only
- −Still short of the GBX155's 10.0L gas / 8.0L diesel ceiling for the biggest trucks and RVs
Full review
NOCO's Boost X lineup exists because the old GB-series left a gap between 'compact commuter pack' and 'diesel truck pack,' and the GBX75 is the tier built specifically for the middle of that gap. At 2,500A and an 8.5L gas / 6.5L diesel rating, it sits meaningfully above the GB70's 2,000A/8.0L-gas/6.0L-diesel spec without approaching the GBX155's 4,250A heavy-duty territory — useful if you drive a gas V8 truck or a light diesel and have found the GB70 works but doesn't leave much margin on a cold morning.
The USB-C port is the generational upgrade that matters day to day. Sixty watts in means a full recharge from empty takes under two hours instead of the better part of a day on the GB70's micro-USB input, and NOCO's 'boost-ready in 5 minutes' figure means a pack you found flat can still save you. The same port pushes 60W out, enough to fast-charge a laptop, and the 400-lumen flashlight is brighter than anything else in NOCO's compact lineup short of the GBX155's 500-lumen unit. UltraSafe 2.0 carries over the same spark-proof, reverse-polarity-protected clamp logic as the rest of the family.
What you give up next to the GBX155 is engine ceiling and the 12V accessory port — this pack tops out well short of a 10.0L diesel and won't run a plug-in inflator on its own. What you save is close to $120 and several pounds. For the driver whose vehicle actually needs more than a GB70 but not the biggest pack NOCO sells, the GBX75 is the size to buy; for a sedan or crossover, the GB40 or GBX45 remain the better value.
Best for: V8 gas trucks and SUVs, and light-to-mid-size diesels, where a GB70 is right at its limit but a GBX155 is more pack than the vehicle needs.
Specifications
| Peak amps | 2,500A |
|---|---|
| Engine rating | Gas up to 8.5L / diesel up to 6.5L |
| Battery | 74Wh lithium-ion, 12V systems only |
| Ports | USB-C PD 60W in/out |
| Flashlight | 400 lumens, 7 modes incl. SOS and strobe |
| Safety | UltraSafe 2.0 — spark-proof, reverse polarity, over-charge, short-circuit |
| Operating temp | -4°F to 122°F (-20°C to 50°C) |
| Ingress rating | IP65 (ports closed) |
| Recharge | ~1.8 hours at 60W USB-C; boost-ready in 5 minutes |
| Weight | ~3.77 lb |
| Warranty | 1 year |
Ready to get one?
We earn a small commission at no extra cost to you — it's how we keep the reviews independent.
~$250 typical price
Buy on AmazonAlternatives in Jump Starters
Best Overall
NOCO Boost HD GB70
2,000 amps, rated for V8 gas and 6.0L diesel, with the safest clamps in the business — the one jump starter that covers almost every driveway.
Premium Pick
NOCO Boost X GBX155
4,250 amps for big diesels, plow trucks, and RVs — with 65W USB-C charging that makes it a serious power bank too.
NOCO Boost X GBX45
The GB40's newer-generation sibling — 1,250A, a 6.5L gas / 4.0L diesel rating, and 60W USB-C that recharges the pack in under an hour.