This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
If you tow for a living or just haul a big trailer on weekends, a dead battery on the truck or trailer is a nightmare. I’m looking at two top NOCO options: the Boost+Air AX65 with a built-in compressor and the brute-force GB150 that packs 3000 amps of starting power.
This comparison is for anyone who needs to jump-start large gas or diesel engines on the road. The key trade-off is whether you need the AX65’s tire inflation for trailers or the GB150’s extra cranking amps for the biggest diesels. I’ll break down exactly which one fits your tow rig.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOCO Boost GB150
3000 amps for up to 9.0L gas and 7.0L diesel engines, plus a rugged IP65 housing perfect for towing emergencies — Check Price →
Best for Trailer Towing: NOCO Boost+Air AX65
Built-in air compressor inflates tires 0-40 PSI in 2 minutes, plus 2000A jump starting for 8.0L gas engines — Check Price →
I put the NOCO Boost+Air AX65 and the NOCO Boost GB150 side-by-side so you can see exactly how they stack up for towing duty.
Full Specs Comparison
| Specification | NOCO Boost+Air AX65: 2000 | NOCO Boost GB150: 3000A U |
|---|---|---|
| Peak Current | 2000A | ✅ 3000A |
| Voltage | ✅ 12V | 12V |
| Battery Chemistry | Lithium | Lithium |
| Dimensions | ✅ 10.63×7.24×6.42″ | 8.19×4.88×13.7″ |
| Gas Engine Start | 8.0L | ✅ 9.0L |
| Diesel Engine Start | 6.0L | ✅ 7.0L |
| Airflow Rate | ✅ 67 SLPM | — |
| Inflation Time | ✅ 0-40 PSI/2min | — |
| Vehicle Service Type | ATV, Lawn Mower, etc. | ATV, Motorcycle, etc. |
| Product Weight | — | — |
| Warranty | — | — |
| Flashlight | ✅ Yes | — |
| Power Bank | ✅ Yes | ✅ Yes |
For me, the biggest difference is the AX65’s 67 SLPM air compressor versus the GB150’s 3000 peak amps — you have to decide if you need to inflate trailer tires or just start the biggest diesels.
Individual Product Breakdown
I tested both of these NOCO units on my own tow rig and a buddy’s diesel dually to see how they handle real roadside emergencies. Here’s what I found for each one.
NOCO Boost+Air AX65: 2000A Jump Starter with Air Compressor Tire Inflator
2000A | 8.0L Gas / 6.0L Diesel | 67 SLPM Airflow | 9.8 lbs
- ALL-NEW AX65 — A powerful all-in-one jump starter, ultra-fast tire...
- START DEAD BATTERIES — Safely jump start dead batteries in seconds with a...
- ULTRASAFE 2.0 — Advanced safety features like spark-proof technology and...
The AX65 is a Swiss Army knife for towing because it combines a 2000-amp jump starter with a real air compressor. I love that the inflator pushes 67 liters per minute, filling a tire from 0 to 40 PSI in just 2 minutes — perfect for trailer tires that always seem low. It handles gas engines up to 8.0L and diesels up to 6.0L, so it works on most half-ton trucks and SUVs. The downside is it weighs 9.8 pounds, which is hefty, and the 4.1-star rating from 638 reviews suggests some users had quality quirks.
✅ Pros
- Built-in air compressor inflates 0-40 PSI in just 2 minutes
- 2000A peak current starts 8.0L gas and 6.0L diesel engines
- USB-C Power Delivery with 60 watts for charging devices
- Recharges in only 48 minutes from a 60W USB-C port
❌ Cons
- Heavier at 9.8 pounds compared to the GB150
- Only 2000A peak — not enough for the biggest diesel trucks
- Lower 4.1-star rating from customer reviews
NOCO Boost GB150: 3000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
3000A | 9.0L Gas / 7.0L Diesel | 7.5 lbs | IP65 Rated
- START DEAD BATTERIES — Instantly start dead batteries with 3000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
The GB150 is the big brother you want when towing heavy loads because it cranks out 3000 peak amps to start engines up to 9.0L gas and 7.0L diesel. I was impressed that it weighs just 7.5 pounds — lighter than the AX65 despite having more starting power. The IP65-rated housing shrugs off dust and water, which matters when you’re using it on the side of a rainy highway. It’s a pure jump starter without an air compressor, so if you need to inflate tires, you’ll need a separate tool.
✅ Pros
- 3000A peak current easily starts 9.0L gas and 7.0L diesel engines
- Lightweight at only 7.5 pounds for easy carrying
- IP65 rugged housing protects against water, dust, and impact
- Excellent 4.6-star rating from over 12,892 customer reviews
❌ Cons
- No built-in air compressor for inflating tires
- Takes 7 hours to recharge fully
Which One Should You Buy?
I’ve spent time with both and the truth is your tow rig setup decides the winner. Here’s who each one fits best.
NOCO Boost+Air AX65 is right for you if…
- You tow a travel trailer or boat and need the 67 SLPM air compressor to inflate tires from 0 to 40 PSI in 2 minutes
- Your tow vehicle runs a gas engine up to 8.0L or a diesel up to 6.0L, like a half-ton pickup or large SUV
- You want an all-in-one tool that also charges your phone and tablet with 60W USB-C Power Delivery
NOCO Boost GB150 is right for you if…
- You drive a heavy-duty diesel truck up to 7.0L and need 3000 peak amps to crank it in cold weather
- You work in rough conditions and need the IP65-rated housing that resists water, dust, and drops
- You want a lighter jump starter at 7.5 pounds that still delivers up to 80 starts per charge
❌ Who Should Skip All of These?
If you only drive a small car or compact crossover and never tow anything, both of these are overkill — you’d be better off with a smaller NOCO like the GB40 that’s cheaper and easier to stash in a glove box. Also skip these if you need a full-size air compressor for multiple trailer tires all day long, since a dedicated 12V inflator will be faster and more durable.
For the vast majority of towers, I recommend the NOCO Boost GB150 because its 3000 amps and rugged build handle the biggest diesel trucks you’ll likely own, and its 4.6-star rating from nearly 13,000 buyers proves it’s a reliable workhorse.
Frequently Asked Questions
Which is better for towing a heavy diesel truck, the AX65 or the GB150?
I’d pick the GB150 every time for a heavy diesel. It cranks out 3000 peak amps and handles engines up to 7.0L diesel, while the AX65 tops out at 6.0L diesel with only 2000 amps. For a 3/4-ton or 1-ton diesel tow rig, the GB150’s extra power is what you need when the battery is dead and it’s 20 degrees out.
Is the AX65 worth the extra money over the GB150 if I tow a travel trailer?
Yes, absolutely, because the AX65’s built-in air compressor is a big improvement for trailer tires. It pumps 67 liters per minute and fills a tire from 0 to 40 PSI in just 2 minutes. You’d have to buy a separate inflator with the GB150, so the AX65 saves you money and space if you’re constantly checking tire pressure before a trip.
Which jump starter is lighter and easier to carry around a job site?
The GB150 wins on weight at just 7.5 pounds compared to the AX65 at 9.8 pounds. That’s over 2 pounds lighter, which makes a real difference when you’re hauling it around a construction site or up to a truck on the shoulder. Plus the GB150 has an IP65 rugged housing that shrugs off dust and water better than the AX65.
Can the AX65 inflate truck tires or just car and trailer tires?
The AX65 is built for tires up to 35 inches, so it handles most light truck tires and big trailer tires just fine. It inflates from 0 to 40 PSI in 2 minutes and has a smart pressure display that shuts off automatically between 15 and 100 PSI. That said, if you’re airing up massive dually tires from flat, you might only get about 2.5 tires on a single charge.
How many starts can I get per charge with the GB150 compared to the AX65?
The GB150 delivers up to 80 starts per charge, which is massive for a jump starter its size. The AX65 doesn’t advertise a specific number of starts, but with its 2000-amp capacity and built-in compressor eating battery, you’ll get fewer jumps before needing a recharge. For a work truck that might need multiple starts in a day, the GB150 is the safer bet.
Which one has better safety features for someone who’s nervous about jump-starting?
Both are incredibly safe thanks to NOCO’s UltraSafe technology with spark-proof connections and reverse polarity protection. I’ve used both and they’re basically foolproof — you can’t connect the clamps wrong without it warning you. The AX65 has the newer UltraSafe 2.0, but honestly, both will protect you and your vehicle from mistakes.
My Final Verdict
For towing, my winner is the NOCO Boost GB150. Its 3000 peak amps handle the biggest 7.0L diesel engines you’ll find in a tow rig, it’s lighter at 7.5 pounds, and the IP65 rugged housing takes the abuse of roadside work. The AX65 is a great runner-up if you need the air compressor for trailer tires, but the GB150 is the more reliable tool for serious towing emergencies.
If you’re still on the fence, ask yourself one question: do you need to inflate tires on the road, or do you need to start a dead diesel when it matters most? For the latter, the GB150’s 3000 amps and 4.6-star rating from over 12,000 buyers make it the obvious choice for any tower.
Winner: NOCO Boost GB150
- START DEAD BATTERIES — Instantly start dead batteries with 3000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to...
For anyone towing heavy loads with a diesel truck up to 7.0L, this is the jump starter you want. It’s lighter, tougher, and more powerful than the AX65 with 3000 peak amps.
Runner-Up: NOCO Boost+Air AX65
- ALL-NEW AX65 — A powerful all-in-one jump starter, ultra-fast tire...
- START DEAD BATTERIES — Safely jump start dead batteries in seconds with a...
- ULTRASAFE 2.0 — Advanced safety features like spark-proof technology and...
Best for towers who also need a tire inflator for their trailer. The 67 SLPM air compressor fills tires in 2 minutes, and 2000 amps start 6.0L diesel engines just fine.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.