The GB150 is worth the extra cost only if you need to jump-start larger engines frequently or require extended power and features. Otherwise, the GB40 is a more affordable and capable option for smaller vehicles.
Many car owners struggle with choosing the right jump starter, especially when faced with multiple models that appear similar at first glance. The NOCO GB40 and GB150 are two of the most popular lithium jump starters in the market, but they serve very different user needs. While both come from NOCO’s trusted Boost line, they are not one-size-fits-all solutions.
If you’ve ever stood roadside with a dead battery—or you just like being prepared—the question becomes: how much power do you really need? The GB150 offers serious cranking power for diesel trucks, RVs, and commercial equipment. The GB40, on the other hand, is lightweight, compact, and fits easily in the glove box of your sedan or SUV
Best Jump Starter Battery for Vehicle Emergencies
Whether you’re driving a compact car, a pickup truck, or managing a fleet, having the right jump starter can save you from frustrating delays and costly tows. Based on performance, reliability, and user feedback, here are the three best jump starter batteries to consider when comparing the NOCO GB150 and GB40:
NOCO Boost Pro GB150 (4000 Amps)
This is the ultimate choice for heavy-duty power needs. It easily starts gas engines up to 10L and diesel engines up to 8L—perfect for RVs, trucks, and work vehicles.
Why we picked it: Delivers commercial-grade power in a portable unit—ideal for serious drivers or professionals who need maximum reliability.
NOCO Boost Plus GB40 (1000 Amps)
A compact and affordable option that packs enough punch for most everyday vehicles, including sedans and small SUVs.
Why we picked it: Lightweight, simple to use, and powerful enough for 90% of personal vehicle owners.
NOCO Boost X GBX55 (1750 Amps)
This mid-range model offers a smart balance between size and power, making it suitable for larger cars and mid-size trucks.
Why we picked it: It bridges the gap between the GB40 and GB150—perfect for users needing more than basic but not commercial-level output.
Power Output and Engine Compatibility
When it comes to jump starters, power isn’t just a number—it determines what kind of vehicles you can rescue. The GB150 and GB40 may look similar at first, but their output capacities put them in two very different leagues.
Quick Comparison Table
| Feature | NOCO GB40 | NOCO GB150 |
| Peak Amps | 1,000 Amps | 4,000 Amps |
| Gas Engine Compatibility | Up to 6.0L | Up to 10.0L |
| Diesel Engine Compatibility | Up to 3.0L | Up to 8.0L |
| Voltage | 12V only | 12V and 24V (for some models) |
Real-World Power Differences
GB40 is suitable for:
- Sedans
- Small SUVs
- Motorcycles
- Small boats or lawn mowers
GB150 is ideal for:
- Heavy-duty trucks
- RVs and camper vans
- Diesel pickups
- Agricultural and industrial equipment
The GB150 delivers a staggering 4,000 peak amps, which gives it enough muscle to crank a completely dead heavy-duty battery. On the other hand, the GB40, with 1,000 amps, is fine for standard consumer vehicles but may fall short on cold days or with a deeply drained battery.
Expert Tip
If you’re regularly driving in cold climates, or you own a vehicle with a larger-than-average battery, consider the GB150 for peace of mind. Cold engines require more cranking power—and that’s where the GB150 shines.
Portability and Ease of Use
The best jump starter isn’t just powerful—it’s one you can actually carry and use when you need it most. While the GB150 offers industrial-level performance, that extra power comes with trade-offs in weight and size. Let’s break it down.
Size and Weight Comparison
| Feature | NOCO GB40 | NOCO GB150 |
| Dimensions | 6.57″ x 3.15″ x 7.72″ | 12.3″ x 7.3″ x 2.7″ |
| Weight | 2.4 lbs (1.1 kg) | 7.5 lbs (3.4 kg) |
| Carrying Case | Optional soft case | Often includes hard case |
Which One is Easier to Use?
GB40 Pros:
- Super compact—fits in most glove boxes
- Lightweight and easy to handle
- Simple to operate with one-button functionality
GB150 Pros:
- Includes integrated voltmeter display
- Heavy-duty clamps for better grip
- Longer cable reach for large engine bays
GB150 Cons:
- Bulkier to store—might not fit in small compartments
- Heavier to handle during emergencies
User Experience Insights
- If you’re someone who prioritizes minimalism and everyday practicality, the GB40 is incredibly user-friendly.
- However, for commercial drivers, mechanics, or RV owners, the GB150’s slightly more complex build is worth the effort for the extra features and reach.
Pro Tip: If you plan to carry your jump starter everywhere or need something travel-friendly, the GB40 is the clear winner for portability. For professionals or frequent off-roaders, the GB150’s extra weight is a fair trade for more capability.
Charging Time and Battery Life
When you’re in a jam, a jump starter that’s dead or takes forever to charge is the last thing you want. That’s why understanding battery life and charging efficiency is key when comparing the GB150 vs. GB40.
Charging Time Comparison
| Feature | NOCO GB40 | NOCO GB150 |
| USB Input Charging | Micro-USB | XGC Port (faster charging) |
| Charging Time (Standard) | ~3 hours (via USB) | ~11 hours (via USB) |
| Charging Time (Fast) | Not supported | ~3 hours (via XGC adapter) |
- The GB40 charges via micro-USB, which is convenient but relatively slow.
- The GB150 uses NOCO’s proprietary XGC port, enabling fast charging with a compatible adapter—cutting charging time significantly.
Battery Life & Standby Time
Both models use lithium-ion batteries and retain charge for up to 1 year with minimal self-discharge.
Typical users report:
- GB40 provides 3–5 jumps per charge
- GB150 delivers up to 40 jumps per charge (depending on vehicle type and battery condition)
Key Takeaways
- If you’re a casual user who checks the battery monthly, the GB40’s battery life is sufficient.
- For business owners, fleet managers, or travelers who need to use the jump starter multiple times between charges, the GB150 is far more robust.
Real-Life Scenario:
Imagine you’re heading out on a multi-day off-road trip with limited access to electricity. In this case, the GB150 is a much safer bet due to its longer-lasting charge and ability to recharge quickly with the XGC input.
Additional Features and Safety Functions
Choosing between the GB150 and GB40 isn’t just about power—it’s about the features that make your jump-start experience safer, smarter, and more versatile. Both models are designed with NOCO’s UltraSafe technology, but the GB150 takes things a few steps further.
Shared Safety Features
Both the GB150 and GB40 come equipped with:
- Spark-proof technology
- Reverse polarity protection
- Overcharge and overheat protection
- LED battery level indicator
- Integrated ultra-bright flashlight (with 7 light modes including SOS)
These make both units reliable for most everyday users, especially those who are nervous about using a jump starter for the first time.
GB150 Exclusive Features
Where the GB150 begins to pull away is in the extras:
- Integrated voltmeter: Displays real-time battery voltage for diagnostics.
- 12V output: Can power tire inflators, inverters, and more.
- XGC fast-charge port: Supports quick recharging and 12V output for accessories.
- Heavy-duty clamps: Designed for thick, corroded, or hard-to-reach battery terminals.
Extra Convenience Factors
| Feature | GB40 | GB150 |
| Flashlight Lumens | 100 lumens | 500 lumens |
| Voltmeter | No | Yes |
| Power 12V Accessories | No | Yes |
| Accessory Kit Availability | Basic | Expanded (with pouch, cables) |
Why It Matters:
- If you only need to jump-start your car once or twice a year, the GB40 gives you all the essential safety features in a small package.
- If you’re troubleshooting vehicles, powering gear, or working in dim light, the GB150’s additional functionality saves time and adds security.
Price, Value & Use Case Recommendation
When deciding between the NOCO GB150 and GB40, price is often the dealbreaker. The GB150 commands a premium price reflecting its superior power and features, but is it worth the extra cost for you?
Price Comparison
| Model | Approximate Retail Price (USD) |
| NOCO GB40 | $100 – $130 |
| NOCO GB150 | $280 – $350 |
What You Get for the Extra Cost
- Quadruple peak amps (4000 vs 1000)
- Compatibility with larger engines (up to 10L gas, 8L diesel)
- Faster recharge via XGC port
- Additional 12V accessory power output
- Integrated voltmeter and more durable clamps
- Heavy-duty build and larger battery capacity
Who Should Choose Which?
| User Type | Recommended Model | Why |
| Daily commuter with small car | GB40 | Compact, affordable, sufficient power |
| Occasional driver or motorcycle | GB40 | Lightweight, easy to store |
| Commercial vehicle operator | GB150 | Heavy-duty power and added features |
| RV or off-road enthusiast | GB150 | Larger battery capacity, multi-function |
| Fleet or emergency responders | GB150 | Multiple jumps, quick recharge |
Conclusion
In summary, the NOCO GB150 is worth the extra cost if you need higher power, faster charging, and enhanced features for larger engines or professional use. The GB40, on the other hand, is a reliable, compact, and affordable option perfectly suited for everyday drivers with smaller vehicles.
Your choice depends on how you intend to use the jump starter:
- For casual users, the GB40 delivers essential jump-starting power in a user-friendly package.
- For commercial drivers, off-roaders, or those who frequently jump-start bigger engines, the GB150 offers peace of mind with its robust capabilities and additional features.
Both models come with solid safety features and build quality, so you’re in good hands either way.
Ready to choose? Consider your vehicle size, frequency of use, and whether the advanced features justify the investment.
Frequently Asked Questions About the NOCO GB150 vs GB40
Can the GB40 jump-start larger vehicles like trucks or RVs?
The GB40 is designed for smaller engines—up to 6L gas or 3L diesel engines. It’s excellent for cars, motorcycles, and small SUVs but not recommended for larger trucks, RVs, or diesel engines above 3L. For those, the GB150 is a much better fit due to its 4000-amp peak power and compatibility with engines up to 10L gas and 8L diesel.
How often do I need to recharge the GB40 or GB150?
Both units hold their charge well, often up to a year when not in use. The GB40 typically offers 3–5 jump starts per charge, while the GB150 can deliver up to 40 jumps depending on engine size and battery condition. If you use the jump starter regularly or in emergencies, frequent recharging is recommended to ensure optimal performance.
Are there safety risks using either jump starter?
Both models incorporate NOCO’s UltraSafe technology, including spark-proof design, reverse polarity protection, and overcharge/overheat safeguards. These features make jump-starting safer for beginners and pros alike. However, always read the user manual and follow proper jump-start procedures to avoid accidents.
What extra features does the GB150 have over the GB40?
Besides more power, the GB150 offers a built-in voltmeter for battery diagnostics, a 12V output for powering accessories, a fast-charge port, and heavy-duty clamps. It also has a brighter flashlight with more modes, making it a versatile tool for roadside emergencies and mechanical work.
Is the higher price of the GB150 justified?
If you need power for large engines, quick recharge times, and multi-functionality, the GB150’s price premium is justified. For most everyday drivers with smaller vehicles, the GB40 offers great value without unnecessary extras. Assess your usage frequency, vehicle type, and needs before deciding.