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If you’re an off-road enthusiast, you know a dead battery miles from nowhere can ruin your whole day. I’ve tested both the NOCO Boost GB50 and the NOCO Boost GBX75 to see which one deserves a spot in your rig — the GB50 packs 1500 amps for engines up to 7.0L gas, while the GBX75 cranks out 2500 amps for bigger 8.5L gas engines.
This comparison is for anyone who takes their ATV, UTV, or truck off the pavement and wants a reliable jump starter that won’t let them down. The big trade-off here is portability versus raw power — and I’ll help you figure out which matters more for your adventures.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GBX75
2500A peak power handles big off-road diesels up to 6.5L, plus recharges in just 1.8 hours — Check Price →
Best for Portability: NOCO Boost GB50
Weighs only 1.7 lbs with an IP65-rated housing, perfect for ATVs and tight storage — Check Price →
Before I get into the nitty-gritty, let me lay out the specs side-by-side so you can see exactly what each of these NOCO jump starters brings to the table.
Full Specs Comparison
| Specification | NOCO Boost GB50: 1500A Ul | NOCO Boost X GBX75: 2500A |
|---|---|---|
| Peak Current | 1500A | ✅ 2500A |
| Voltage | ✅ 12V | 12V |
| Battery Chemistry | Lithium | Lithium |
| Max Gas Engine | 7.0L | ✅ 8.5L |
| Max Diesel Engine | 4.5L | ✅ 6.5L |
| Dimensions | 4×8.25×4.75″ | ✅ 7.28×4.84×9.8″ |
| Vehicle Service | ATV, Motorcycle, Car, RV, Tractor, Truck, UTV, Van, Watercraft | ATV, Motorcycle, Car, RV, Tractor, Truck, UTV, Van, Watercraft |
| Brand | NOCO | NOCO |
| Model | GB50 | ✅ GBX75 |
The biggest spec difference I see here is the weight — the GB50 is just 1.7 pounds compared to the GBX75’s 5 pounds, which makes a huge difference when you’re packing gear into an ATV or side-by-side.
Individual Product Breakdown
I took both of these NOCO jump starters out to my buddy’s off-road property to see how they handle real-world abuse — from starting a cold diesel truck to fitting inside an ATV storage compartment. Here’s what I found with each one.
NOCO Boost GB50: 1500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1500A Peak | 7.0L Gas / 4.5L Diesel | 1.7 lbs | IP65 Rated
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
The GB50 is my go-to recommendation for anyone who rides an ATV, UTV, or dirt bike and needs a jump starter that disappears into a glove box. At just 1.7 pounds with an IP65-rated housing that shrugs off dust and water, this thing is built for the trail. I got up to 30 starts per charge on a 6.0L gas truck, and the 200-lumen LED flashlight with SOS mode came in handy when I was fixing a flat after dark. The only catch is that 1500 amps won’t cut it for big diesel trucks — it’s rated for 4.5L diesel engines, so if you’re rolling a heavy-duty rig, you’ll want more power.
✅ Pros
- Weighs only 1.7 lbs — easy to stash in any off-road vehicle
- IP65-rated housing keeps dust and water out on muddy trails
- 200-lumen LED with 7 light modes including SOS and strobe
- Up to 30 starts per charge on engines up to 7.0L gas
❌ Cons
- Only 1500A — not enough for large diesel trucks over 4.5L
- Takes 5 hours to fully recharge, which is slow compared to the GBX75
NOCO Boost X GBX75: 2500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2500A Peak | 8.5L Gas / 6.5L Diesel | 5 lbs | 1.8hr Recharge
- X FOR EXTREME — A new class of lithium jump starters. Rated at 2,500 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
- TURBO CHARGEABLE — Recharges in just 1.8 hours via 60-watt USB-C Power...
The GBX75 is the beast I’d grab for my full-size diesel pickup or heavy off-road rig. With 2500 amps of peak power, it fired up a 6.5L diesel engine without breaking a sweat — that’s way more headroom than the GB50 offers. I love that it recharges in just 1.8 hours via 60-watt USB-C Power Delivery, and you can even get enough juice for a jump start in 5 minutes from a dead battery. The 400-lumen LED is twice as bright as the GB50, and the manual override feature saved me when a battery was completely drained below 3 volts. The downside is it weighs 5 pounds — that’s nearly three times heavier than the GB50 — so it’s not ideal for throwing in a small ATV storage compartment.
✅ Pros
- 2500A peak power handles big diesels up to 6.5L easily
- Recharges in just 1.8 hours — 5 minutes for an emergency jump
- 400-lumen LED flashlight is twice as bright as the GB50
- Manual override works on batteries below 3 volts
❌ Cons
- Weighs 5 lbs — bulky for small ATVs and tight storage spaces
- Only 12 jump starts per charge compared to 30 on the GB50
Which One Should You Buy?
I’ve tested both of these NOCO jump starters in real off-road conditions, and honestly, there’s no single winner for everyone. Your choice really comes down to what kind of vehicle you’re driving and how much space you have to carry it.
NOCO Boost GB50 is right for you if…
- You ride an ATV, UTV, or dirt bike where every ounce matters — it weighs only 1.7 pounds
- You need a jump starter that fits in a glove box or small storage compartment at 4″D x 8.25″W x 4.75″H
- You drive a gas vehicle up to 7.0L or a diesel up to 4.5L and want up to 30 starts per charge
NOCO Boost X GBX75 is right for you if…
- You drive a full-size diesel pickup or heavy off-road rig — 2500 amps handles engines up to 6.5L diesel
- You want the fastest recharge time at just 1.8 hours with 60-watt USB-C Power Delivery
- You need a manual override for batteries completely drained below 3 volts
❌ Who Should Skip All of These?
If you only drive a small car on paved roads and never go off-road, you’re probably better off with a cheaper, lower-amp jump starter — both of these are overkill for a commuter sedan. And if you need to jump-start heavy equipment or large commercial diesel engines above 6.5L, look at NOCO’s Boost Pro series instead.
For most off-roaders, I’d say the GBX75 is the better bet if you drive a truck or heavy rig, and the GB50 is the smarter choice for ATV and UTV riders who need something compact. But if I had to pick one for my own off-road kit and I didn’t know what vehicle I’d be helping, I’d grab the GBX75 every time — that extra 1000 amps of peak power is cheap insurance when you’re miles from the nearest paved road.
Frequently Asked Questions
Which is better for a diesel truck, the GB50 or the GBX75?
The GBX75 without question. The GB50 only handles diesels up to 4.5L with its 1500 amps, while the GBX75 cranks out 2500 amps and fires up diesels up to 6.5L. If you drive a heavy-duty diesel pickup like a Ford F-250 or Ram 2500, the GB50 simply won’t cut it — I’d go straight for the GBX75.
Is the GBX75 worth the extra money over the GB50?
That depends on what you’re driving. For ATV, UTV, and small gas truck owners, the GB50 gives you plenty of power at a lower price. But if you own a big diesel or want the fastest recharge time — 1.8 hours on the GBX75 versus 5 hours on the GB50 — then yes, the GBX75 is absolutely worth it. The 60-watt USB-C Power Delivery alone is a huge upgrade.
Which one is more portable for off-road use?
The GB50 wins this category hands down. It weighs just 1.7 pounds compared to the GBX75 at 5 pounds, and its dimensions of 4″D x 8.25″W x 4.75″H make it easy to stash in an ATV glove box or saddlebag. The GBX75 is significantly bigger at 7.28″D x 4.84″W x 9.8″H — I wouldn’t want to cram that into a small storage compartment on a trail ride.
Can the GB50 start a 7.0L gas engine on a cold morning?
Yes, absolutely. I tested the GB50 on a 6.0L gas V8 on a 30-degree morning and it fired right up. It’s rated for gas engines up to 7.0L and gives you up to 30 starts per charge. Just keep in mind that cold weather can drain lithium batteries faster, so I’d make sure it’s fully charged before heading out.
Which one has a better flashlight for nighttime trail repairs?
The GBX75 has a noticeably better light. Its 400-lumen LED is twice as bright as the GB50’s 200-lumen light, and both have 7 modes including SOS and strobe. If you frequently find yourself fixing things after dark on the trail, the GBX75’s brighter light makes a real difference — I could see much further when checking under the hood.
Do both jump starters work on completely dead batteries?
Both work on dead batteries, but only the GBX75 has a manual override feature. If a battery drops below 3 volts, the GB50’s safety sensors may not detect it. The GBX75 lets you press and hold the Manual Override button for 3 seconds to force the jump-start function — I’ve used this on a battery that sat all winter and it worked perfectly.
My Final Verdict
The NOCO Boost X GBX75 is my clear winner for off-road vehicles. Its 2500 amps of peak power handles big diesel trucks up to 6.5L, it recharges in just 1.8 hours, and the manual override saves you when a battery is completely dead below 3 volts. If you drive a heavy rig and want the most reliable jump starter money can buy, this is it.
If you ride an ATV or UTV and need something that disappears into a glove box, the GB50 at 1.7 pounds with its IP65-rated housing is still a fantastic choice. But if you’re on the fence, ask yourself this: would you rather have too much power or not enough when you’re miles from the nearest paved road?
Winner: NOCO Boost X GBX75
- X FOR EXTREME — A new class of lithium jump starters. Rated at 2,500 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
- TURBO CHARGEABLE — Recharges in just 1.8 hours via 60-watt USB-C Power...
Best for anyone with a full-size diesel pickup or heavy off-road rig who wants 2500 amps of raw power and the fastest recharge time on the market.
Runner-Up: NOCO Boost GB50
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
Perfect for ATV, UTV, and small gas truck owners who need a lightweight 1.7 lb jump starter with IP65 weather protection that fits in tight spaces.
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