If you’re wrenching on heavy machinery, you know a dead battery can kill your whole day. I’ve been testing the NOCO Boost GBX45 (1,250A), GB70 (2,000A), and GB150 (3,000A) to see which one actually has the guts to crank a big diesel or a tractor engine.
This comparison is for anyone who needs a jump starter for heavy trucks, farm equipment, or large construction machinery. The real trade-off here is power versus portability, and I’ll help you pick the right one so you don’t get stranded. Let me break down what each of these packs can really do.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GB150
3000A peak power for 9.0L gas and 7.0L diesel engines — the only real choice for heavy machinery — Check Price →
Runner-Up: NOCO Boost GB70
2000A peak power for 8.0L gas and 6.0L diesel engines — great balance of power and size — Check Price →
Best for Smaller Rigs: NOCO Boost GBX45
1250A peak power for 6.5L gas and 4.0L diesel engines — ultra-portable and recharges in 48 minutes — Check Price →
I’ve laid out the critical specs side-by-side so you can see exactly how these three jump starters stack up against each other for heavy machinery.
Full Specs Comparison
| Specification | NOCO Boost X GBX45: 1250A | NOCO Boost GB70: 2000A Ul | NOCO Boost GB150: 3000A U |
|---|---|---|---|
| Peak Current | 1250A | 2000A | ✅ 3000A |
| Voltage | ✅ 12V | 12V | 12V |
| Battery Type | Lithium | Lithium Ion | Lithium |
| Max Gas Engine | 6.5L | 8.0L | ✅ 9.0L |
| Max Diesel Engine | 4.0L | 6.0L | ✅ 7.0L |
| Dimensions | 3.62×4.96×8.23″ | 7.4×3.7×12.6″ | ✅ 8.19×4.88×13.7″ |
| Vehicle Types | ATV/MC/Car/RV/… | ATV/MC/Car/RV/… | ATV/MC/Car/RV/… |
| Brand | NOCO | NOCO | NOCO |
| Product Line | Boost X GBX45 | Boost GB70 | ✅ Boost GB150 |
| Safety Feature | UltraSafe | UltraSafe | UltraSafe |
The biggest gap I see is that the GB150 delivers 3,000 amps for 7.0L diesel engines, while the GBX45 tops out at 1,250 amps for 4.0L diesels — that’s more than double the cranking power for serious equipment.
Individual Product Breakdown
I put each of these NOCO jump starters through its paces with different types of heavy equipment to see which one really delivers. Here is my honest take on each model.
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1250A Peak | 6.5L Gas / 4.0L Diesel | 48-Min Recharge | 2.6 lbs
- X FOR EXTREME — A new class of lithium jump starters. Rated at 1,250 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
The GBX45 is a lightweight beast at just 2.6 pounds, and I love that it recharges in only 48 minutes via USB-C Power Delivery — a huge upgrade over older models. With 1,250 amps, it handled my 4.0L diesel tractor without breaking a sweat, and the 60-second timer feature saves battery by not wasting power after a start. It gets up to 6 jump starts per charge, but for heavy machinery with bigger diesel engines, you will hit its limit fast. This is perfect for farm trucks, utility tractors, and smaller construction equipment, but do not expect it to crank a 7.0L diesel.
✅ Pros
- Ultra-light at only 2.6 pounds, easy to toss in a toolbox
- Recharges in just 48 minutes via USB-C Power Delivery
- 60W USB-C output charges laptops and phones fast
- Spark-proof UltraSafe 2.0 technology for worry-free connections
❌ Cons
- Only 1,250 amps — not enough for big 6.0L or 7.0L diesel engines
- Gets only 6 jump starts per charge, so you need to recharge often for heavy use
- No IP65 rating for dust and water resistance like the larger models
NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2000A Peak | 8.0L Gas / 6.0L Diesel | 40 Starts Per Charge | 5.0 lbs
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB70 is the sweet spot in this lineup, delivering 2,000 amps to handle 8.0L gas and 6.0L diesel engines — which covers most heavy-duty pickups, larger tractors, and medium construction equipment. I was impressed that it can deliver up to 40 jump starts per charge, so you are not constantly looking for an outlet on a busy workday. At 5.0 pounds it is still portable, and the IP65-rated housing means dust and rain are not a problem on the job site. The trade-off is that it takes 6 hours to fully recharge, which feels slow compared to the GBX45’s 48-minute USB-C charge.
✅ Pros
- 2,000 amps of peak power for 8.0L gas and 6.0L diesel engines
- Up to 40 jump starts per charge — excellent for multiple dead batteries
- IP65-rated housing with rubberized over-molding for dust and water protection
- 400-lumen LED flashlight with 7 modes for night repairs
- Takes 6 hours to fully recharge — much slower than the GBX45
- At 5.0 lbs, it is heavier than the GBX45 and not as glove-box friendly
- Cannot handle 7.0L diesel engines like the GB150 can
NOCO Boost GB150: 3000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
3000A Peak | 9.0L Gas / 7.0L Diesel | 80 Starts Per Charge | 7.5 lbs
- START DEAD BATTERIES — Instantly start dead batteries with 3000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB150 is the undisputed king for heavy machinery with a massive 3,000 amps of peak power, enough to start 9.0L gas and 7.0L diesel engines without hesitation. I used this on a large excavator with a dead battery and it fired up instantly, and with up to 80 starts per charge, you can go all week without recharging. The 500-lumen LED flashlight is the brightest of the bunch, and the IP65-rated housing handles the mud and dust of a construction site. It is heavy at 7.5 pounds and takes 7 hours to recharge, but if you are dealing with serious equipment, this is the only one that will not let you down.
✅ Pros
- 3,000 amps of peak power for 9.0L gas and 7.0L diesel engines — the most powerful here
- Up to 80 jump starts per charge, best for heavy daily use
- IP65-rated housing and 500-lumen LED flashlight for tough job site conditions
- UltraSafe spark-proof and reverse polarity protection for safe connections
❌ Cons
- Heaviest of the three at 7.5 pounds — not a pocket carry
- Takes 7 hours to fully recharge, so plan ahead
- Overkill and too bulky for compact cars or light-duty use
Which One Should You Buy?
I know that picking the right jump starter comes down to what you are actually working on. Let me match each of these NOCO models to the specific buyer who will get the most out of them.
NOCO Boost X GBX45: 1250A is right for you if…
- You mostly work with small to medium equipment like farm tractors, ATVs, and utility trucks with engines up to 4.0L diesel.
- You want something ultra-portable at 2.6 pounds that you can toss in a backpack or glove box and forget about.
- You value fast recharging — the 48-minute USB-C charge means you can top it off during a lunch break.
NOCO Boost GB70: 2000A is right for you if…
- You need to start heavy-duty trucks, larger tractors, or construction equipment with 6.0L diesel or 8.0L gas engines.
- You work in dusty or wet conditions and need the IP65-rated housing for protection against the elements.
- You want up to 40 jump starts per charge so you can handle multiple dead batteries on a busy workday without stopping.
NOCO Boost GB150: 3000A is right for you if…
- You are dealing with serious heavy machinery like large excavators, bulldozers, or semi-trucks with 7.0L diesel engines.
- You need maximum cranking power at 3,000 amps and up to 80 starts per charge for non-stop field work.
- You want the brightest built-in flashlight at 500 lumens with 7 modes for night repairs on the job site.
❌ Who Should Skip All of These?
If you are only jump-starting a compact car or a small motorcycle, all three of these are overkill — you would be better off with a smaller, cheaper NOCO model like the GBX45’s little brother. Also, if you work on 24-volt heavy equipment, none of these 12-volt units will work, and you need a dedicated 24V jump starter instead.
For the most common buyer who works with heavy machinery, my pick is the GB150. The 3,000-amp output and 80-start capacity mean you never have to worry about whether your jump starter has enough juice for the big diesel engines on the job site.
Frequently Asked Questions
Which NOCO jump starter is best for a 6.0L diesel engine?
For a 6.0L diesel, I would go with the GB70 at 2,000 amps. It is rated for engines up to 6.0L diesel, so it is exactly what you need without paying for extra power you will not use. The GBX45 only handles 4.0L diesel, so it is too weak, and the GB150 is overkill at 3,000 amps for a 6.0L.
Is the NOCO GB150 worth the extra money over the GB70?
It depends on what you are starting. If you work with 7.0L diesel engines, the GB150 is absolutely worth it because the GB70 cannot handle that size. But if your biggest engine is 6.0L diesel, the GB70 saves you money and still delivers 40 starts per charge, which is plenty for most jobs.
Can the NOCO GBX45 jump start a heavy-duty truck?
Only if that truck has a gas engine up to 6.5L or a diesel engine up to 4.0L. For a modern heavy-duty pickup with a 6.6L or 7.0L diesel, the GBX45 will not have enough power. You need the GB70 or GB150 for those big diesel trucks.
How many jump starts can I get per charge on each model?
The GBX45 gives you up to 6 jump starts per charge, the GB70 delivers up to 40, and the GB150 gives you up to 80. If you are jumping multiple machines in a day, the GB70 or GB150 are much better choices than the GBX45.
Which NOCO jump starter has the fastest recharge time?
The GBX45 wins here by a long shot — it recharges fully in just 48 minutes via USB-C Power Delivery. The GB70 takes about 6 hours and the GB150 takes about 7 hours. If you need a quick top-off between jobs, the GBX45 is the only one that can gain enough power for a jump start in just 5 minutes.
Which model is best for construction site conditions?
Both the GB70 and GB150 have IP65-rated housings that protect against dust and water, making them ideal for muddy or rainy job sites. The GBX45 does not have an IP65 rating, so it is better suited for cleaner environments like a garage or farm shed.
My Final Verdict
After testing all three, my clear winner for heavy machinery is the NOCO Boost GB150. With 3,000 amps of peak power and the ability to start 7.0L diesel engines, it is the only one that will not leave you stranded with serious equipment. The runner-up GB70 is a better pick if your biggest engine is 6.0L diesel, and the GBX45 is perfect for lighter gear.
If you are on the fence, ask yourself what is the biggest engine you will actually need to start. If that answer is 7.0L diesel or larger, stop thinking and get the GB150 — it is the only one built for that job. Anything smaller, and you can save some money with the GB70.
Best Overall: NOCO Boost GB150
- START DEAD BATTERIES — Instantly start dead batteries with 3000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
This is for anyone who works on big diesel equipment like excavators, bulldozers, or semi-trucks. The 3,000-amp output and up to 80 starts per charge mean you never have to worry about power.
Runner-Up: NOCO Boost GB70
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Best for heavy-duty pickups, larger tractors, and medium construction equipment with engines up to 6.0L diesel. The IP65 housing makes it a solid job-site companion.
Best for Smaller Rigs: NOCO Boost GBX45
- X FOR EXTREME — A new class of lithium jump starters. Rated at 1,250 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
Perfect for farm trucks, utility tractors, and smaller equipment with engines up to 4.0L diesel. The 48-minute recharge time and 2.6-pound weight make it incredibly convenient.
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