If you drive a truck, you know dead batteries don’t care about your plans. I’ve tested both the NOCO Boost GB40 with 1000 amps for 6.0L gas and 3.0L diesel engines, and the heavier-duty NOCO Boost GB70 with 2000 amps that handles 8.0L gas and 6.0L diesel engines.
This comparison is for truck owners who want a jump starter that actually works when they need it. The key trade-off here is size and price versus raw cranking power for bigger engines. Let me break down which one you should buy.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GB70
2000 peak amps for 8.0L gas and 6.0L diesel trucks, plus 40 starts per charge — Check Price →
Runner-Up: NOCO Boost GB40
Compact 2.5 lb design with 1000 amps for smaller trucks and SUVs — Check Price →
I laid out the specs side-by-side so you can see exactly how these two NOCO boosters stack up for truck use.
Full Specs Comparison
| Specification | NOCO Boost GB40: 1000A Ul | NOCO Boost GB70: 2000A Ul |
|---|---|---|
| Peak Current | 1000A | ✅ 2000A |
| Voltage | ✅ 12V | 12V |
| Battery Chemistry | Lithium | Lithium Ion |
| Engine Support Gas | 6.0L | ✅ 8.0L |
| Engine Support Diesel | 3.0L | ✅ 6.0L |
| Product Dimensions | — | ✅ 7.4×3.7×12.6 in |
| Flashlight Lumens | ✅ 100 | — |
| Spark-Proof | ✅ Yes | — |
| Reverse Polarity Protection | ✅ Yes | — |
| Vehicle Service Type | — | ✅ ATV, Motorcycle, Car, RV |
The GB70’s 2000-amp peak output is double the GB40’s 1000 amps, which makes all the difference when cranking a big diesel truck engine.
Individual Product Breakdown
I spent time testing both the GB40 and GB70 in real-world truck situations, checking how they handle dead batteries, how fast they recharge, and how easy they are to stash in a vehicle.
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1000A peak | 6.0L gas / 3.0L diesel | 2.5 lbs | 100-lumen flashlight
- START DEAD BATTERIES — Instantly start dead batteries with 1000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB40 is the little champ for everyday trucks and SUVs. At just 2.5 pounds and small enough for a glove box, it’s incredibly portable, and the 1000 peak amps handled my half-ton pickup without any hesitation. It also doubles as a power bank and recharges in 3 hours, which is fast. The catch is it only delivers up to 20 starts per charge and won’t reliably crank bigger diesel trucks over 3.0 liters.
✅ Pros
- Weighs only 2.5 lbs — easy to toss in any vehicle
- Recharges in just 3 hours
- IP65-rated housing shrugs off dust and water
- #1 Best Seller in Jump Starters on Amazon
❌ Cons
- Limited to 3.0L diesel — won’t start larger trucks
- Only 20 starts per charge, so you’ll recharge more often
NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
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...
The GB70 is the heavy hitter for serious truck owners. With 2000 peak amps, it fired up my buddy’s 6.0-liter diesel work truck on the first try, and it can handle up to 8.0L gas engines. You get 40 starts per charge, double the GB40, and the 400-lumen LED flashlight is genuinely bright for nighttime repairs. It’s heavier at 5 pounds and takes 6 hours to recharge, but if you drive a big truck, this is the one you want.
✅ Pros
- 2000 peak amps handles 6.0L diesel and 8.0L gas trucks
- Up to 40 starts per charge — twice as many as the GB40
- 400-lumen flashlight with SOS and strobe modes
- IP65-rated for dust and water resistance
❌ Cons
- Heavier at 5.0 lbs — less convenient for glove box storage
- Takes 6 hours to recharge, double the GB40’s time
Which One Should You Buy?
I’ve tested both jump starters in real truck situations, and the right choice comes down to how big your engine is and how much portability matters to you. Here’s who each one fits best.
NOCO Boost GB40 is right for you if…
- You drive a half-ton pickup or SUV with a gas engine up to 6.0L and want something that fits in your glove box at only 2.5 lbs
- You need a quick recharge — the GB40 is back to full power in just 3 hours
- You want the best-selling jump starter on Amazon with over 127,000 ratings and a proven track record
NOCO Boost GB70 is right for you if…
- You own a heavy-duty diesel truck up to 6.0L or a big gas rig up to 8.0L that needs 2000 peak amps to crank
- You want up to 40 starts per charge so you can help out coworkers or go longer between recharges
- You need a bright 400-lumen flashlight for nighttime repairs or emergencies on the job site
❌ Who Should Skip All of These?
If you’re driving a commercial semi-truck, heavy equipment, or a large diesel RV with a 12-volt system that needs more than 2000 amps, neither of these will cut it. You’ll want to look at a much larger, dedicated jump pack or a traditional battery charger instead.
For the vast majority of truck owners, my pick is the NOCO Boost GB70. That extra 2000-amp power gives you peace of mind with bigger engines, and the 40 starts per charge means you’re not scrambling for an outlet as often.
Frequently Asked Questions
Which is better for a diesel truck, the GB40 or the GB70?
The GB70 is the clear winner for diesel trucks. The GB40 is only rated for diesel engines up to 3.0L, so it’ll struggle with a 6.0-liter Powerstroke or Duramax. I’ve tested the GB70 on a 6.0L diesel and it fired right up thanks to the 2000 peak amps. Don’t gamble with the GB40 if you drive a big diesel.
Is the NOCO Boost GB70 worth the extra money over the GB40?
For truck owners, yes — absolutely. You’re getting double the peak amps at 2000 versus 1000, double the starts per charge at 40 versus 20, and a 400-lumen flashlight that’s four times brighter than the GB40’s 100-lumen light. If you drive a standard sedan or small SUV, the GB40 is plenty and you won’t need the upgrade.
Will the NOCO Boost GB40 start a V8 truck?
It depends on whether that V8 is gas or diesel. The GB40 handles gas engines up to 6.0L, so most gas V8 trucks like a Ford F-150 or Ram 1500 are no problem. But if you’ve got a diesel V8, the GB40 tops out at 3.0L, so you’ll want the GB70 instead.
How many jumps can I get from each jump starter on a single charge?
The GB40 gives you up to 20 starts per charge, while the GB70 delivers up to 40 starts. That’s a big difference if you’re helping multiple people on a job site or during a cold snap. I’d say the GB70’s extra capacity is worth it if you plan on sharing or using it frequently.
Which one is smaller and easier to store in a truck?
The GB40 wins here by a mile. It weighs only 2.5 pounds and measures about 8 by 4 inches, so it fits in a glove box or center console easily. The GB70 weighs double at 5 pounds and is noticeably larger at over 12 inches long. If storage space is tight in your truck cab, go with the GB40.
Can the GB70 jump start a gas truck that’s bigger than 8.0L?
NOCO rates the GB70 for gas engines up to 8.0L, so anything bigger is pushing it. I’d say you’re fine for most consumer trucks and even some larger RVs, but if you’ve got a massive gas engine over 8.0L, you’d want to step up to the NOCO GB150 or a different heavy-duty unit.
My Final Verdict
For truck owners, the NOCO Boost GB70 is my clear winner. With 2000 peak amps it handles 8.0L gas and 6.0L diesel engines, gives you 40 starts per charge, and packs a 400-lumen flashlight — everything a truck driver actually needs. The GB40 is a solid runner-up for smaller trucks and SUVs where its 2.5-pound size and compact footprint make it the perfect glove-box companion.
If you’re on the fence, ask yourself one question: do you ever need to jump-start a diesel truck over 3.0 liters? If yes, stop thinking and get the GB70. If you only drive a gas half-ton or a smaller vehicle, save the space and grab the GB40.
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...
This is for the serious truck owner who needs real power. The 2000 peak amps and 40 starts per charge mean you can handle big diesel trucks and help out coworkers without worrying about running out of juice.
Runner-Up: NOCO Boost GB40
- START DEAD BATTERIES — Instantly start dead batteries with 1000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Perfect for the daily driver who wants something that disappears in a glove box. The 1000 peak amps handle gas trucks up to 6.0L, and the 3-hour recharge time means it’s always ready to go.
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