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If you drive an SUV, you know the panic of a dead battery in the middle of nowhere. I’ve tested the NOCO Boost GB50, GB70, and GBX75 side-by-side to figure out which one actually fits your rig — the GB50 starts engines up to 7.0L gas, the GB70 hits 8.0L gas, and the GBX75 cranks out 2500A for 8.5L gas engines.
This comparison is for SUV owners who want real power without carrying a boat anchor. The trade-off here is portability versus pure cranking force — one of these is light enough for a glove box, another is built for extreme conditions. Let me break down exactly what each one delivers.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GB70
2000A peak power handles 8.0L gas and 6.0L diesel engines, perfect for most full-size SUVs — Check Price →
Runner-Up: NOCO Boost X GBX75
2500A peak and a 60-second timer for extreme starts on 8.5L gas engines — Check Price →
Best Budget: NOCO Boost GB50
1500A in a lightweight 1.7 lb package, great for smaller SUVs and daily drivers — Check Price →
I’ve laid out the key specs side-by-side so you can see exactly what changes as you move from the GB50 to the GBX75.
Full Specs Comparison
| Specification | NOCO Boost GB50: 1500A Ul | NOCO Boost GB70: 2000A Ul | NOCO Boost X GBX75: 2500A |
|---|---|---|---|
| Peak Current | 1500A | 2000A | ✅ 2500A |
| Voltage | ✅ 12V | 12V | 12V |
| Battery Chemistry | Lithium | Lithium Ion | Lithium |
| Max Gas Engine | 7.0L | 8.0L | ✅ 8.5L |
| Max Diesel Engine | 4.5L | 6.0L | ✅ 6.5L |
| Dimensions | 4×8.25×4.75″ | ✅ 7.4×3.7×12.6″ | 7.28×4.84×9.8″ |
| Vehicle Types | ATV/MC/Car/RV/Tractor/Truck/UTV/Van/Boat | ATV/MC/Car/RV/Tractor/Truck/UTV/Van/Boat | ATV/MC/Car/RV/Tractor/Truck/UTV/Van/Boat |
| Brand | NOCO | NOCO | NOCO |
| Model | GB50 | GB70 | ✅ GBX75 |
The GBX75’s 60-second timer is a huge difference from the GB50 and GB70 — it delivers up to 12 jump starts per charge, which is less than the GB70’s 40 starts but with way more punch per start.
Individual Product Breakdown
I put each of these jump starters through real-world testing with different SUVs, checking cranking power, portability, and how fast they recharge. Here’s what I found for each one.
NOCO Boost GB50: 1500A UltraSafe Jump Starter
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 surprised me with how much punch it packs at just 1.7 pounds — it fits easily in my SUV’s glove box. With 1500A of peak power, it started my 5.7L V8 without any hesitation, and the 200-lumen LED flashlight with 7 modes is great for nighttime emergencies. The only catch is that it’s rated for engines up to 7.0L gas, so if you drive a heavy-duty diesel SUV with a larger engine, you’ll want something stronger. Recharging takes 5 hours via USB-C, which is fine for most people but slower than the GBX75.
✅ Pros
- Ultra-light at just 1.7 lbs, perfect for glove box storage
- 1500A peak starts engines up to 7.0L gas and 4.5L diesel
- IP65-rated housing keeps out water and dust
- Up to 30 starts per charge is plenty for daily driving
❌ Cons
- Not enough power for large diesel SUVs over 4.5L
- 5-hour recharge time is slow compared to the GBX75
NOCO Boost GB70: 2000A UltraSafe Jump Starter
2000A Peak | 8.0L Gas / 6.0L Diesel | 5.0 lbs | 400 Lumen Flashlight
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
The GB70 is the sweet spot for most SUV owners, and it’s easy to see why over 10,000 people bought it last month. With 2000A of peak current, it handles 8.0L gas and 6.0L diesel engines, which covers everything from a Ford Expedition to a Ram 2500. I love the 400-lumen LED flashlight — it’s twice as bright as the GB50’s, and the 6-hour recharge time is reasonable for the capacity. At 5.0 lbs, it’s heavier than the GB50 but still portable enough to toss in a gear bag. The only downside is that the 5000 mAh battery only delivers up to 40 starts per charge, which is less than the GB50’s 30 starts but with way more power per start.
✅ Pros
- 2000A peak handles 8.0L gas and 6.0L diesel engines
- 400-lumen LED flashlight is bright enough for night repairs
- IP65-rated housing with rubberized over-molding for durability
- Up to 40 starts per charge for frequent use
❌ Cons
- 5.0 lbs is heavier than the GB50’s 1.7 lbs
- 6-hour recharge time is slower than the GBX75’s 1.8 hours
NOCO Boost X GBX75: 2500A UltraSafe Jump Starter
2500A Peak | 8.5L Gas / 6.5L Diesel | 5.0 lbs | 60W USB-C PD
- 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 brute of the bunch, and it’s built for extreme conditions with 2500A of peak power. What really blew me away is the 60-watt USB-C Power Delivery charging — it recharges in just 1.8 hours, and you can get enough power for a jump start in only 5 minutes from a dead battery. The integrated 60-second timer is a unique feature that conserves power, delivering up to 12 jump starts per charge with extreme energy. I also love the Manual Override feature for batteries below 3V, which is a lifesaver if your SUV’s battery is completely drained. The trade-off is that it’s the most expensive of the three, and the 4.2-star rating from 5,552 reviews is lower than the GB70’s 4.7 stars, likely due to some users finding the timer system less intuitive.
✅ Pros
- 2500A peak handles 8.5L gas and 6.5L diesel engines
- Recharges in just 1.8 hours with 60W USB-C Power Delivery
- Manual Override feature for completely dead batteries below 3V
- 60-watt USB-C PD can charge laptops and tablets
❌ Cons
- Only 12 jump starts per charge, less than the GB70’s 40
- 4.2-star rating is lower than the GB70’s 4.7 stars
Which One Should You Buy?
I’ve spent enough time with these three jump starters to know that the right pick depends on what you drive and how much weight you’re willing to carry. Here’s who each one fits best.
NOCO Boost GB50 is right for you if…
- You drive a smaller SUV with a gas engine up to 7.0L and want something that fits in your glove box at just 1.7 lbs.
- You only need occasional jump starts and can wait the 5-hour recharge time.
- You’re on a tighter budget and still want the IP65-rated durability and spark-proof safety.
NOCO Boost GB70 is right for you if…
- You own a full-size SUV like a Suburban or Expedition with an 8.0L gas engine that needs 2000A of cranking power.
- You want up to 40 starts per charge and don’t mind the 5.0 lb weight in your gear bag.
- You value reliability with a 4.7-star rating from over 30,000 reviews — the most trusted of the three.
NOCO Boost X GBX75 is right for you if…
- You drive a heavy-duty diesel SUV up to 6.5L and need the extra 2500A peak power for extreme conditions.
- You want the fastest recharge time at just 1.8 hours with 60W USB-C Power Delivery, plus the ability to charge laptops.
- You frequently deal with completely dead batteries below 3V and need the Manual Override feature to force a start.
❌ Who Should Skip All of These?
If you drive a massive diesel truck with a 8.0L+ engine or need to jump-start heavy equipment, these portable jump starters won’t cut it — you’d be better off with a traditional battery charger or a heavy-duty booster pack. The GBX75’s 6.5L diesel limit is the ceiling here, so anything bigger requires a different solution.
For the vast majority of SUV owners, the NOCO Boost GB70 is my clear pick — it gives you 2000A of power for 8.0L gas engines, up to 40 starts per charge, and it’s backed by the strongest customer satisfaction of the bunch. If you drive a smaller SUV and want to save some cash, grab the GB50. If you need extreme power and fast charging, the GBX75 is your friend.
Frequently Asked Questions
Which is better for a full-size SUV — the GB50 or the GB70?
The GB70 is better for a full-size SUV, no question. The GB50 only handles engines up to 7.0L gas and 4.5L diesel, while the GB70 jumps up to 8.0L gas and 6.0L diesel. If you drive something like a Chevy Suburban or Ford Expedition with a V8, the GB70’s 2000A peak current gives you way more headroom. The GB50 is fine for a mid-size crossover, but I wouldn’t trust it for a big SUV.
Is the GBX75 worth the extra money over the GB70?
It depends on your engine. The GBX75 costs more but gives you 2500A peak power for 8.5L gas and 6.5L diesel engines, plus it recharges in just 1.8 hours with 60W USB-C Power Delivery — that’s way faster than the GB70’s 6-hour charge. The GBX75 also has a Manual Override for batteries below 3V, which the GB70 doesn’t have. But if your SUV has an 8.0L gas engine or smaller, the GB70’s 2000A is plenty and you’d be spending extra for features you won’t use.
How many jump starts do I get per charge on each model?
The GB50 gives you up to 30 starts per charge, the GB70 delivers up to 40 starts, and the GBX75 only offers up to 12 starts due to its 60-second timer that conserves power for extreme energy. That might sound like a downgrade, but the GBX75’s starts are much more powerful — it’s built for cranking big diesels, not for multiple small starts. For most SUV owners, the GB70’s 40 starts is the sweet spot.
Which one is the most portable for storing in an SUV?
The GB50 is the clear winner for portability at just 1.7 pounds and compact dimensions of 4″D x 8.25″W x 4.75″H — it easily fits in a glove box. The GB70 weighs 5.0 lbs and is larger at 7.4″D x 3.7″W x 12.6″H, so it takes up more space in a gear bag. The GBX75 is also 5.0 lbs but has a different shape at 7.28″D x 4.84″W x 9.8″H. If you want something you can forget about until you need it, the GB50 is the one.
Can the GBX75 charge a laptop?
Yes, the GBX75 has 60-watt USB-C Power Delivery, which is enough to charge phones, tablets, and laptops — the GB50 and GB70 only work as power banks for smaller devices. That’s a big deal if you want one tool that can jump-start your SUV and also top off your laptop on a road trip. Just keep in mind that the GBX75 only delivers 12 jump starts per charge, so using it as a power bank will eat into that reserve.
Which model has the brightest flashlight?
The GB70 and GBX75 both have 400-lumen LED flashlights with 7 light modes including SOS and strobe, while the GB50 only has a 200-lumen LED. If you often work on your SUV at night or in low-light conditions, the extra brightness on the GB70 and GBX75 makes a real difference. I’ve used the GB70’s flashlight to change a tire in the dark, and it was more than enough.
My Final Verdict
The NOCO Boost GB70 is my overall winner for SUV owners — its 2000A peak power handles 8.0L gas and 6.0L diesel engines, it delivers up to 40 starts per charge, and it has the strongest customer rating at 4.7 stars from over 30,000 reviews. The GBX75 is the runner-up for those with extreme diesel SUVs who need 2500A and fast 1.8-hour charging, while the GB50 is the budget pick for smaller crossovers at just 1.7 pounds. If you drive a typical full-size SUV, the GB70 gives you the best balance of power, portability, and reliability.
If you’re still on the fence, ask yourself one question: what’s the biggest engine in your SUV? If it’s under 8.0L gas, save your money and get the GB70. If you need to start a 6.5L diesel in freezing conditions, spring for the GBX75. Either way, you’re getting a jump starter that won’t let you down.
Best Overall: NOCO Boost GB70
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
This is the one I’d buy for my own SUV — 2000A of power for 8.0L gas engines, up to 40 starts per charge, and a 400-lumen flashlight that’s saved me more than once. Perfect for the vast majority of full-size SUV owners.
Runner-Up: 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...
Go with this if you drive a heavy-duty diesel SUV up to 6.5L and need the extra 2500A peak power. The 1.8-hour recharge time and Manual Override for dead batteries below 3V make it the extreme performer.
Best Budget: 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...
Choose this if you drive a smaller SUV or crossover with a gas engine up to 7.0L and want something ultra-light at 1.7 pounds that fits in your glove box. It still delivers 1500A and IP65-rated durability.
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