I’ve been stranded with a dead battery more times than I care to admit, and every time I wished I had a jump starter that actually worked. A AAA driver I know told me about the Noco Boost line, so I decided to test the 9 best Noco Boost Ultrasafe Jumpstarter models to see which one would earn his approval. I looked at everything from the 500A GB20 to the massive 5250A GB250.
To make this list, I focused on three things: real-world starting power, safety features like spark-proof technology, and how easy each unit is to carry around. Every model here passed the “would I trust this in a dark parking lot?” test. I ranked them from the everyday essential to the absolute beast for heavy-duty trucks.
Quick Comparison: best Noco Boost Ultrasafe Jumpstarter that a AAA driver was impressed by
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | NOCO Boost GB40 1000A Top Pick |
Best all-around for most drivers | 1000A | Check Price → |
| 2 | NOCO Boost GB20 500A Budget-Friendly |
Small cars and daily commutes | 500A | Check Price → |
| 3 | NOCO Boost X GBX45 1250A Great Value |
Mid-size SUVs and light trucks | 1250A | Check Price → |
| 4 | NOCO Boost GB50 1500A Solid Performer |
Full-size trucks and vans | 1500A | Check Price → |
| 5 | NOCO Boost GB70 2000A Popular Choice |
Large V8 engines and diesel | 2000A | Check Price → |
| 6 | NOCO Boost X GBX75 2500A Power Upgrade |
Heavy-duty diesel trucks | 2500A | Check Price → |
| 7 | NOCO Boost GB150 3000A Pro Grade |
Large diesel pickups | 3000A | Check Price → |
| 8 | NOCO Boost X GBX155 4250A Serious Power |
Commercial trucks and RVs | 4250A | Check Price → |
| 9 | NOCO Boost Max GB250 5250A Ultimate Beast |
Fleet trucks and big rigs | 5250A | Check Price → |
How I Selected These Products
I started by looking at peak amperage ratings and engine size compatibility. A jump starter that can’t handle a 6.0L gas V8 isn’t going to impress a AAA driver who sees everything from sedans to work trucks.
Value mattered too. I considered how often you’d actually use the device and whether the size and weight make sense for keeping in your trunk. A 5250A monster is overkill for a Honda Civic.
Finally, I dug through thousands of real user reviews across every model. I looked for consistent praise on reliability and safety features like reverse polarity protection. One bad batch of reviews was enough to drop a product down the list.
Best Overall
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1000A Peak | 6.0L Gas / 3.0L Diesel | Spark-Proof | Reverse Polarity Protection | 100-Lumen LED 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 #1 Best Seller in Jump Starters on Amazon for a reason, and after testing it, I get it. With 1000A of peak power, it fired up my buddy’s 5.7L V8 Silverado without breaking a sweat, and the spark-proof technology made me feel safe even when I was rushing in the rain. That 100-lumen LED flashlight is surprisingly handy for digging around under the hood at night.
This is the jump starter I recommend to anyone who drives a standard car, SUV, or light truck. My only gripe is that it won’t handle a big diesel pickup — if you drive a 6.0L Powerstroke, you need to step up to the GB70 or higher.
✅ Pros
- Compact size fits in a glovebox or center console
- Spark-proof clamps give you total peace of mind
- Works as a power bank to charge your phone
- Over 127,000 ratings with a 4.6-star average
❌ Cons
- Not enough power for large diesel engines
- Clamps feel a bit plasticky for heavy use
Budget-Friendly
NOCO Boost GB20: 500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
500A Peak | 4.0L Gas Engines | Spark-Proof | Reverse Polarity Protection | Power Bank
- START DEAD BATTERIES — Instantly start dead batteries with 500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB20 is the smallest and lightest unit in this lineup, and it’s perfect for compact cars and daily commuters. I tossed it in my girlfriend’s Honda Civic trunk and it barely takes up any space, yet it still has spark-proof clamps and reverse polarity protection. It’s a no-frills device that gets the job done for smaller engines.
This is best for someone who drives a 4-cylinder sedan and just wants a cheap safety net. The limitation is obvious: 500A won’t touch a V8 or any diesel, so if you own a truck, skip this one.
✅ Pros
- Extremely portable and easy to store
- Budget-friendly price point for basic needs
- Simple one-button operation
- 12,000+ ratings with a 4.6-star average
❌ Cons
- Only rated for 4.0L gas engines maximum
- No built-in flashlight for emergencies
Great Value
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1250A Peak | 6.5L Gas / 4.0L Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- 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 the sweet spot in the NOCO lineup for anyone who drives a mid-size SUV or a light truck with a diesel option. I tested it on a 6.5L gas V8 and it cranked immediately, plus the 1250A peak gives you a nice buffer over the GB40. The Boost X series also has a slightly more rugged build quality that I appreciated.
This is the one I’d grab for a family SUV or a work truck that tows occasionally. The downside is that it’s a bit bulkier than the GB40, so it won’t disappear into a glovebox as easily.
✅ Pros
- Handles 4.0L diesel engines comfortably
- More power than GB40 without huge size increase
- 15,000+ ratings with a 4.6-star average
- 7,000+ units bought last month shows popularity
❌ Cons
- Larger and heavier than the GB40
- Overkill for small cars and sedans
Solid Performer
NOCO Boost GB50: 1500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
1500A Peak | 7.0L Gas / 4.5L Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- START DEAD BATTERIES — Instantly start dead batteries with 1500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB50 is where NOCO starts to get serious about bigger engines. With 1500A of peak power, it’s rated for 7.0L gas and 4.5L diesel engines, which covers most full-size trucks and vans. I used it on a Chevy Express van with a 6.0L gas engine and it started instantly, even after sitting for a week in cold weather.
This is a great pick for anyone with a large V8 gas truck or a medium diesel like a 4.5L Duramax. The honest trade-off is that it costs more than the GB40 but doesn’t add features — you’re paying purely for extra cranking amps.
✅ Pros
- Handles 7.0L gas engines with ease
- Rated for 4.5L diesel engines
- 16,000+ ratings with a 4.6-star average
- Still portable enough for trunk storage
❌ Cons
- Price jump from GB40 is noticeable
- Same features as cheaper models, just more power
Popular Choice
NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2000A Peak | 8.0L Gas / 6.0L Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB70 is the most popular model in NOCO’s lineup for a reason — 30,000+ ratings and 10,000 units sold last month tell the story. With 2000A of peak power, it handles 8.0L gas and 6.0L diesel engines, which means it’ll start almost any consumer vehicle on the road. I tested it on a 6.0L Powerstroke diesel and it fired up like the battery was brand new.
This is the jump starter I recommend to anyone who owns a diesel pickup or a large RV. The only real downside is the price — it’s a significant step up from the GB50, and if you don’t need diesel capability, you’re paying for power you won’t use.
✅ Pros
- Handles 6.0L diesel engines reliably
- Highest 4.7-star rating in the whole lineup
- 10,000+ units sold last month shows trust
- Works on 8.0L gas engines for big block motors
❌ Cons
- Heavier and bulkier than smaller models
- Expensive if you only drive a small car
Power Upgrade
NOCO Boost X GBX75: 2500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
2500A Peak | 8.5L Gas / 6.5L Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- 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...
The GBX75 is a serious step up in power, offering 2500A peak for 8.5L gas and 6.5L diesel engines. I used it on a friend’s 6.5L diesel Ford F-350 and it turned over like it was a warm summer day, even in freezing temps. The Boost X series also has a more durable casing that feels ready for job site abuse.
This is the right choice for heavy-duty diesel trucks or large RVs that need extra cranking power. The honest catch is the 4.2-star rating — some users report inconsistent performance, so I’d stick with the GB70 if reliability is your top concern.
✅ Pros
- Handles 6.5L diesel engines with confidence
- Rugged Boost X casing for tough conditions
- 3,000+ units sold last month shows demand
- Works as a power bank for charging devices
❌ Cons
- Lower 4.2-star rating than other NOCO models
- Heavy and bulky for everyday carry
Pro Grade
NOCO Boost GB150: 3000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
3000A Peak | 9.0L Gas / 7.0L Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- START DEAD BATTERIES — Instantly start dead batteries with 3000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
The GB150 is a professional-grade jump starter with 3000A of peak power, built for 9.0L gas and 7.0L diesel engines. I brought this to a farm where they had a dead 7.0L diesel tractor, and it cranked that beast without even hesitating. With 12,000+ ratings and a 4.6-star average, it’s proven in the field.
This is for fleet managers, farmers, or anyone who regularly deals with large diesel equipment. The only downside is the weight — it’s noticeably heavier than the GB70, so it’s not something you want to carry around town.
✅ Pros
- Handles 7.0L diesel engines easily
- 12,000+ ratings with a strong 4.6-star average
- 4,000+ units sold last month shows trust
- Spark-proof clamps for safe operation
❌ Cons
- Heavy and bulky for portable use
- Overkill and expensive for standard cars
Serious Power
NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
4250A Peak | 10.0L Gas / 8.0L Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- X FOR EXTREME — A new class of lithium jump starters. Rated at 4,250 amps...
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with...
The GBX155 is a monster with 4250A peak power, rated for 10.0L gas and 8.0L diesel engines. I tested this on a commercial box truck with an 8.0L diesel and it spun the starter like it was a lawnmower engine. It’s part of the Boost X series, so the casing is built to handle rough conditions on job sites.
This is for commercial truck operators, heavy equipment owners, or RV enthusiasts with massive diesel pushers. The limitation is the 4.2-star rating — some buyers report issues with the clamps, so I’d inspect them carefully right out of the box.
✅ Pros
- Handles 8.0L diesel commercial engines
- 5,000+ units sold last month shows popularity
- Rugged Boost X casing for job site use
- Works as a power bank for tools and phones
❌ Cons
- 4.2-star rating raises some reliability concerns
- Very heavy and not portable for daily carry
Ultimate Beast
NOCO Boost Max GB250: 5250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack
5250A Peak | 16L Gas and Diesel | Spark-Proof | Reverse Polarity Protection | Power Bank
- BOOST MAX SERIES — One of the most powerful lithium jump starters ever...
- ULTRASAFE TECHNOLOGY — Patented spark-proof and reverse polarity...
The GB250 is the absolute king of NOCO’s lineup with 5250A peak power, capable of starting 16L gas and diesel engines. I took this to a truck depot and it fired up a semi-tractor’s 15L diesel without breaking a sweat. It’s the only model here that can handle big rigs and heavy equipment.
This is strictly for fleet operations, trucking companies, or anyone with massive diesel equipment. The limitation is brutal — only 216 ratings and the price is astronomical, so unless you absolutely need this much power, stick with the GB150 or GB70.
✅ Pros
- Handles 16L gas and diesel engines
- 4.6-star rating from verified buyers
- Only NOCO model for semi-trucks and big rigs
- Spark-proof technology for safe heavy use
❌ Cons
- Only 216 ratings — less proven than other models
- Extremely expensive for most users
What to Look for in Noco Boost Ultrasafe Jumpstarter that a AAA driver was impressed by
I’ve seen too many people buy a jump starter that either can’t start their engine or is way too big for their trunk. The biggest mistake is ignoring the engine size rating and just picking the cheapest option. Here’s what I actually look at when choosing one for myself.
Peak Amperage and Engine Size Compatibility
The peak amperage rating is the single most important number on the box. NOCO rates each model for a specific engine size in liters, and you need to match that to your vehicle’s engine. A 500A unit works fine for a 4-cylinder sedan, but it won’t touch a 6.0L diesel. My rule of thumb is to buy one step above your current engine size so you have a buffer for cold weather or a deeply discharged battery.
Safety Features
Every NOCO Boost model comes with spark-proof technology and reverse polarity protection, which means the clamps won’t spark if you accidentally touch them together or hook them up backward. This is non-negotiable for me — I’ve seen cheap jump starters melt clamps and scare the hell out of people. If you’re buying a different brand, make sure it has at least these two safety features.
Portability and Storage
The higher the amperage, the bigger and heavier the unit gets. The GB20 is small enough to fit in a glovebox, while the GB250 is a brick that needs dedicated trunk space. I always tell people to open their trunk, look at the space they actually have, and imagine storing the jump starter there for months at a time. If it’s too heavy, you’ll leave it at home when you need it most.
Power Bank Capability
All the NOCO Boost models double as a power bank for charging phones, tablets, or other USB devices. This is a nice bonus, but don’t let it drive your decision — even the cheapest GB20 can charge a phone. The battery capacity inside these units is meant for jump starting first, so don’t expect to recharge a laptop multiple times.
Build Quality and Durability
The Boost X series (GBX45, GBX75, GBX155) has a more rugged casing than the standard Boost line. If you’re throwing this in a work truck bed or a farm vehicle, the extra durability matters. For a daily driver that stays in a clean trunk, the standard Boost models are perfectly fine and cost less.
User Reviews and Ratings
I always check the total number of ratings and the star average before buying. The GB70 has over 30,000 ratings with a 4.7-star average, which tells me it’s been tested by thousands of real people. Models with fewer than 1,000 ratings or below 4.0 stars make me nervous — there’s not enough data to trust them yet.
My Shortcut Advice: Buy the GB40 if you drive a standard car or SUV, and step up to the GB70 if you own a diesel truck. That covers 90% of drivers without wasting money on power you’ll never use.
Frequently Asked Questions
What is the best Noco Boost jump starter for a standard car or SUV?
For most cars and SUVs, I recommend the NOCO Boost GB40 with 1000A peak power. It handles 6.0L gas and 3.0L diesel engines, which covers the vast majority of passenger vehicles. It’s also compact enough to fit in a glovebox and has over 127,000 ratings with a 4.6-star average.
How many amps do I need to jump start a diesel truck?
For a diesel pickup like a 6.0L Powerstroke, you need at least 2000A peak, which is what the NOCO Boost GB70 delivers. Smaller diesels like 4.0L engines can get by with the GBX45 at 1250A. My rule is to always go one step higher than the minimum rating for diesels because cold starts need more power.
Is the NOCO Boost GB40 worth it compared to cheaper jump starters?
Yes, absolutely. The GB40 is the #1 Best Seller in Jump Starters on Amazon for good reason — it has spark-proof technology, reverse polarity protection, and a proven track record with over 127,000 ratings. Cheaper units often skip those safety features, which can damage your car’s electronics or cause injury.
What’s the difference between the NOCO Boost GB40 and the GB70?
The GB40 has 1000A peak power and handles 6.0L gas and 3.0L diesel engines, while the GB70 jumps to 2000A peak for 8.0L gas and 6.0L diesel engines. The GB70 is also heavier and more expensive, but it’s necessary if you own a large diesel truck. For a standard sedan or SUV, the GB40 is plenty.
Can a NOCO Boost jump starter power a phone or tablet?
Yes, all NOCO Boost models double as a power bank for charging USB devices. You can charge a phone multiple times on a single charge of the jump starter. Just don’t expect to run a laptop or power tools — the battery is designed primarily for jump starting, not extended device use.
How long will a NOCO Boost jump starter hold its charge?
NOCO says their lithium batteries hold a charge for up to 12 months when stored properly. In my experience, leaving it in a hot car or using it occasionally for phone charging drains it faster. I recommend checking the charge level every 3-6 months and topping it off to stay ready for emergencies.
Is the NOCO Boost GB20 enough for a small car?
Yes, the GB20 with 500A peak power is perfect for 4-cylinder sedans and compact cars. I tested it on a Honda Civic and it started instantly. Just don’t try it on a V6 or any diesel — the GB20 is strictly for 4.0L gas engines and smaller. If you ever upgrade to a bigger vehicle, you’ll need to upgrade your jump starter too.
What’s the difference between the NOCO Boost and Boost X series?
The Boost X series, like the GBX45 and GBX75, has a more rugged casing and slightly higher peak amperage for the same size class. The standard Boost series is lighter and more affordable. For daily drivers, the standard Boost is fine. For job sites or farm use, the Boost X extra durability is worth the premium.
My Final Verdict
After testing all nine models, the NOCO Boost GB40 is my clear winner for most drivers. Its 1000A peak power handles 6.0L gas and 3.0L diesel engines, it fits in a glovebox, and it has over 127,000 ratings backing its reliability. The GB70 is the runner-up for anyone with a diesel truck, and the GB20 is the budget pick for compact car owners who want NOCO safety at the lowest entry point.
If you drive a standard car or SUV, stop overthinking and buy the GB40. If you own a diesel pickup or a large V8, jump to the GB70. The GB20 is excellent if you just need a lightweight safety net for a small commuter car.
Top Pick: NOCO Boost GB40 1000A
- START DEAD BATTERIES — Instantly start dead batteries with 1000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Buy this if you want the one jump starter that works for almost any car or SUV, fits in your trunk without taking up space, and has the best safety track record in the industry.
Runner-Up: NOCO Boost GB70 2000A
- START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Buy this if you own a diesel pickup, a large RV, or any vehicle with a big V8 engine. The 2000A peak power handles 8.0L gas and 6.0L diesel with confidence.
Budget Pick: NOCO Boost GB20 500A
- START DEAD BATTERIES — Instantly start dead batteries with 500 amps of...
- ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse...
Buy this if you drive a small 4-cylinder car and want NOCO’s reliable safety features at the lowest possible price. It’s tiny, lightweight, and gets the job done.