NOCO GB vs GBX Series: What’s the Difference? (Full Comparison)
For most drivers, the NOCO GB series is the smart buy. It delivers reliable power at a lower price. The GBX series offers more power and faster charging. But it costs more. Buy the GB series for everyday cars and value. Choose GBX if you need USB-C fast charging or have a larger engine.
You are stuck in a parking lot. Your car battery is dead. You need a jump start, fast. NOCO makes two popular jump starter lines: GB and GBX. They look similar. But the difference matters. I am Alex Rahman. I have tested both series hands-on. This guide will help you pick the right one. No fluff. Just clear answers.
- GBX models have higher peak amps than their GB counterparts. GBX45 = 1250A vs GB40 = 1000A.
- GBX series uses USB-C Power Delivery for both input and output. GB series mostly uses USB-A for output.
- GBX models recharge much faster. Some units go from zero to jump-ready in just 5 minutes.
- The older GB series often includes a built-in voltmeter. The newer GBX series typically does not.
- GB models are generally more affordable. The GB40 costs around 132 USD, while the GBX45 is around 175 USD.
| Category | NOCO GB Series | NOCO GBX Series |
|---|---|---|
| Overall Winner | 🏆 Best Value | 🏆 Best Performance |
| Best Value | ✅ Yes | ❌ No |
| Best Performance | ❌ No | ✅ Yes |
| Best For Beginners | ✅ Yes | ❌ No |
| Best for Cold Weather / Diesel | ✅ Yes (GB70/GB150) | ✅ Yes (GBX55/GBX75) |
Product Overview: NOCO GB Series (Boost Plus / HD / Pro)
| ✅ Best for | Daily drivers, sedans, SUVs, and value-focused buyers. |
| ❌ Not ideal for | Large diesel trucks (above 6.0L) or those needing laptop charging. Consider GBX or Hulkman Alpha 85 instead. |
| 💰 Price | ~132 USD (GB40) to ~330 USD (GB70) (check for latest price) |
The GB series is NOCO’s original line. Think of it as the reliable workhorse. Models include the GB40 (1000A), GB50 (1500A), GB70 (2000A), and GB150 (3000A). These units use lithium-ion batteries. They feature NOCO’s UltraSafe technology. This includes spark-proof connections and reverse polarity protection. You get a bright LED flashlight with 7 modes. A built-in USB port lets you charge phones and tablets. The GB series is known for one thing: dependability. Some models, like the GB150, also include a handy LCD voltmeter. This shows your battery’s voltage at a glance. It is a feature many users love.
NOCO Boost Plus GB40 1000A UltraSafe Jump Starter
The best-selling GB40 is perfect for most cars, SUVs, and trucks up to 6 liters of gas. It starts dead batteries in seconds and doubles as a power bank for phones. A proven performer.
Product Overview: NOCO GBX Series (Boost X)
| ✅ Best for | Tech-savvy users, larger engines, and those needing universal fast charging. |
| ❌ Not ideal for | Budget buyers or those wanting a voltmeter. Consider a CARKLA or GOOLOO if budget is tight. |
| 💰 Price | ~175 USD (GBX45) to ~330 USD (GBX75) (check for latest price) |
The GBX series is the modern upgrade. It is NOCO’s “X for Extreme” line. Models include the GBX45 (1250A), GBX55 (1750A), GBX75 (2500A), and GBX155 (4250A). The jump starter difference starts with power. Each GBX model offers roughly 25% more peak amps than its GB cousin. But the real upgrade is USB-C Power Delivery. These units charge from zero to full in about 1.5 hours. Even better, you can charge a dead unit for just 5 minutes and get a jump start. The USB-C port can also power laptops, tablets, and phones. It is a true 60W power bank. The display is also upgraded. You get clear status icons for reverse polarity, overheating, and low voltage. It is a more refined, more capable package.
NOCO Boost X GBX45 1250A UltraSafe Jump Starter
The GBX45 is the modern choice for newer cars and trucks up to 6.5L gas. Its USB-C fast charging is a game-changer. It also recharges in under an hour. Perfect for those who want the latest tech.
Full Spec Comparison: NOCO GB vs GBX Series
| Spec | NOCO GB40 (GB Series) | NOCO GBX45 (GBX Series) | Winner |
|---|---|---|---|
| Peak Current | 1000A | 1250A | GBX45 |
| Engine Capacity (Gas) | Up to 6.0L | Up to 6.5L | GBX45 |
| Engine Capacity (Diesel) | Up to 3.0L | Up to 4.0L | GBX45 |
| Battery Capacity (Wh) | 24 Wh | 32 Wh (approx.) | GBX45 |
| Weight | 2.4 lbs (1.08 kg) | 2.64 lbs (1.19 kg) | GB40 |
| Jump Starts Per Charge | Up to 20 | Up to 24 (approx.) | GBX45 |
| LED Lumens | 100 Lumens | 200 Lumens | GBX45 |
| Built-in Voltmeter | ✅ (GB70/GB150) | ❌ No | GB Series |
| IP Rating | IP65 | IP65 | Tie |
| Charging Time (Standard) | 3-5 Hours (USB) | 1.5 Hours (USB-C PD) | GBX45 |
| Charging Time (Quick) | N/A | 5 Mins to Jump Ready | GBX45 |
| Price (USD) | ~132 USD | ~175 USD | GB40 |
| Warranty | 1 Year | 1 Year | Tie |
Head-to-Head: Performance & Raw Power: GB vs GBX
The GBX series is the clear winner for raw power. NOCO designed the GBX lineup to be more powerful. The GBX45 offers 1250 peak amps. The GB40 offers 1000 peak amps. This pattern continues up the range. For example, the GBX55 provides 1750A, while the GB70 provides 2000A (though GB70 remains a powerhouse). The difference is noticeable on larger engines. The GBX45 can handle gas engines up to 6.5L and diesels up to 4.0L. The GB40 tops out at 6.0L gas and 3.0L diesel. If you drive a large SUV, a pickup truck, or anything with a big V8, the extra amps matter. The GBX series gives you more starting power and more attempts per charge. Winner: GBX Series
Head-to-Head: Portability & Design: GB vs GBX
The GBX series wins on modern design and features. Both series are compact and rugged. They share an IP65 rating for dust and water resistance. However, the GBX series feels more refined. It features a sleeker profile and a more informative LED display. The display shows battery level, error codes, and charge status clearly. The clamps on the GBX series also see an improvement. Some users find the cables on older GB models a bit short. The GBX series addresses this with better ergonomics. But there is a trade-off. The GBX45 is slightly heavier and thicker than the GB40. It is a small difference. The modern look and better interface of the GBX make it the winner here. Winner: GBX Series
Head-to-Head: Price & Value: GB vs GBX
The GB series offers significantly better value for most people. Here is the simple math. The GB40 costs around 132 USD. The GBX45 costs around 175 USD. That is a 43 USD difference. For that extra money, you get more power and USB-C fast charging. But do you need it? Most drivers with standard cars will never use the extra 250 amps. The GB40 will start your sedan, crossover, or small SUV easily. It has started millions of cars reliably. The GB70, with 2000 amps, is often priced similarly to the GBX55. But the GB70 still uses micro-USB. The GBX55 has USB-C. The choice comes down to your budget and tech preferences. For pure value, the proven GB series takes the win. Winner: GB Series
If you want the latest tech and fast charging without breaking the bank, look for the GBX45 on sale. It often drops to within 20-30 USD of the GB40 during holiday events.
Head-to-Head: Safety Features & Unique Tools
No clear winner, but the GB series has a hidden gem: the voltmeter. Both series feature NOCO’s UltraSafe technology. This includes spark-proof connections and reverse polarity protection. These features make it almost impossible to mess up a jump start. The GBX series upgrades this to UltraSafe 2.0. It adds enhanced thermal and power management. It also includes extra status LEDs for cold and hot conditions. However, the GB series offers a feature many mechanics love: a built-in voltmeter on models like the GB70 and GB150. This shows your car battery’s exact voltage. It is incredibly useful for diagnosing a weak battery versus a dead one. Puzzlingly, NOCO removed this feature from the GBX series. A customer review notes, “Sadly and most puzzlingly, this feature is not included on the newer GBX models, which is the main reason that I opted for a GB model”[reference:0]. The GBX series does have a Manual Override button for batteries below 3 volts. But you must use it carefully.
The manual override feature disables all safety protections. This includes spark-proof and reverse polarity protection. Only use it for batteries below 3 volts. Never let the clamps touch. Incorrect use can cause sparks, heat, or damage the unit[reference:1].
Another real-world complaint involves cable length. Some Amazon reviews note that the jumper cables on both models could be longer. This is especially true for trucks with batteries mounted deep in the engine bay. An extension cable (GBC007) is available separately.
Real-World Use Cases: Which One Wins?
- Everyday Commuter (4-cylinder sedan): GB40 Wins. It is cheaper and has more than enough power for a small engine. No need to pay for extra amps you won’t use.
- Family SUV or V6 Truck: Tie. Both work well. Choose GB40 to save money. Choose GBX45 for faster recharging.
- Large V8 Truck or Diesel (up to 6.0L): GBX45 Wins. The extra 250 amps provide a real safety margin on cold mornings or with a heavily discharged battery.
- Cold Weather (Below -20°C/-4°F): GB70 or GBX55 Wins. A user reported starting a V8 engine at -25F with a GB70[reference:2]. Lithium batteries hate extreme cold. Keep the unit warm before use. The GBX series offers better cold-weather diagnostics.
- Fleet / Commercial Use: GBX Series Wins. Fast USB-C charging is critical here. A dead GBX45 can be revived enough for a jump in just 5 minutes. This saves time and frustration on a job site.
Who Should Buy the NOCO GB Series?
- Value-focused drivers. You want a reliable jump starter without paying for premium features.
- Owners of standard cars, crossovers, and small SUVs. Your engine is under 6.0L gas or 3.0L diesel.
- People who want a built-in voltmeter. This is a great diagnostic tool you lose with the GBX series.
- Budget-conscious buyers. The GB40 is often on sale for just over 100 USD.
Who Should Buy the NOCO GBX Series?
- Tech enthusiasts. You want USB-C fast charging for your jump starter and laptop.
- Owners of larger vehicles. You have a V8, a large diesel (up to 4.0L diesel for GBX45), or a truck.
- People who want the fastest recharge times. You need your jump starter to be ready in under an hour.
- Families with multiple devices. The 60W USB-C output can charge laptops and tablets on road trips.
Who Should NOT Buy Each One?
- Don’t buy the GB series if… you have a large diesel truck or want to charge a laptop from your jump starter. Look at the GBX series or a Hulkman Alpha 85 instead.
- Don’t buy the GBX series if… you are on a tight budget or only drive a small sedan. You are paying for power you will likely never use. The GB40 is a smarter buy.
- Don’t buy either if… you need absolute maximum reliability and longevity. Some Amazon reviews suggest the older GB series has fewer long-term issues than the newer GBX series. A user reported, “The New GBX series has way more problems even than the older GB”[reference:3]. Consider the GOOLOO GP4000 or Hulkman Alpha 85 if longevity is your top priority.
Some vehicles have battery posts that are deeply recessed. The clamps on some jump starters may not reach. Measure the depth of your battery terminals before buying if you have a European or heavy-duty truck.
How to Maintain Your NOCO Jump Starter (Battery Care & Storage Tips)
Your lithium jump starter is a battery. Treat it like one to ensure it lasts.
You cannot just buy a jump starter and forget it for years. It needs care. Charge the unit at least once every three months. Monthly is even better. Lithium batteries self-discharge slowly. Letting one sit dead for months will permanently damage it. This is a common complaint in reviews. Users say their GBX unit died after a year because it was left discharged[reference:4]. Do not let that be you. Keep the charge level between 50% and 80% for long-term storage. Avoid extreme temperatures. Do not leave it in a hot car in summer. Do not store it in a freezing garage all winter. The internal battery chemistry can be permanently harmed. Heat is the real enemy. Also, be very careful with the manual override feature. Bypassing safety checks can damage the unit or your car’s electronics. Use it only when absolutely necessary. Finally, if you use your jump starter heavily to start a large engine, recharge it promptly after use. Do not put it back in your glove box at 30% power.
Final Verdict
The NOCO GB series is the overall winner for most drivers. It offers legendary reliability at a lower price. The GB40 is perfect for the vast majority of everyday cars and SUVs. It will start your engine and hold a charge for months. It is a safe, reliable choice.
But the GBX series is the future. If you have a larger engine or want the convenience of USB-C, choose GBX. The faster charging alone can be a lifesaver in an emergency. My name is Alex Rahman. Here is my simple advice: For a sedan or small SUV, buy the GB40. For a truck, a large diesel, or if you love modern tech, spend the extra money on the GBX45.
👉 Check GB40 Price 👉 Check GBX45 Price
Frequently Asked Questions
Which is better, NOCO GB or GBX?
The GB series is better for value and reliability. The GBX series is better for raw power and fast charging. Choose GB for everyday cars to save money. Choose GBX for large trucks or if you need laptop charging.
What is the difference between NOCO GB40 and GBX45?
The GBX45 has 1250 peak amps versus the GB40’s 1000 amps. The GBX45 features USB-C Power Delivery for fast charging and laptop power. The GB40 uses USB-A for devices. The GB40 is cheaper and often includes a voltmeter on higher models.
Is the NOCO GBX series worth the extra money?
It depends on your vehicle. For a standard passenger car, no, save your money. For a large V8 truck or a diesel engine, yes, the extra power provides peace of mind. The fast charging is also a major benefit for busy people.
Does the NOCO GBX work in cold weather?
Yes, but with limits. The official operating temperature goes down to -20°C (-4°F). One user successfully started a car at -40°C with a GBX45, but the unit itself needs to be kept warm[reference:5]. Do not store the jump starter in a freezing car if possible. Bring it inside on extreme cold nights.
How many times can I use a NOCO jump starter before recharging?
The GB40 offers up to 20 jump starts on a full charge. The GBX45 offers up to 24. However, these numbers drop in cold weather or when starting very large engines. For best performance, recharge the unit after every 3-4 heavy uses.
Affiliate Disclosure: As an Amazon Associate, I earn from qualifying purchases. If you click a link on this page and make a purchase, I may receive a small commission — at no extra cost to you. I only recommend products I genuinely believe will help you. This helps keep the site free and running. Thank you for your support.
I’m Alex Rahman, a car enthusiast and automotive writer focused on practical solutions, car tools, and real-world driving advice. I share simple and honest content to help everyday drivers make better decisions.