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NOCO Boost X GBX45 Jump Starter: Detailed Review

Avatar Lithium Battery Zone, July 25, 2025July 25, 2025

When it comes to having a reliable and powerful jump starter for your car, motorcycle, RV, or even tractor, the NOCO Boost X GBX45 stands out as an exceptional choice. In this review, we’ll dive into the key features, performance, customer feedback, pros and cons, and conclude with a final verdict on whether the NOCO Boost X GBX45 is the jump starter you’ve been looking for.

NOCO Boost X GBX45 Jump Starter
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Key Features and Specifications

Before diving into performance and customer experiences, it’s important to understand the features and specifications that make the NOCO Boost X GBX45 unique in the world of jump starters.

FeatureSpecification
BrandNOCO
Product Dimensions3.62″ D x 4.96″ W x 8.23″ H
Item Weight1.2 Kilograms
Amperage1250 Amps
Peak Output Current1250 Amps
Battery Cell CompositionLithium
Voltage12 Volts
Vehicle Service TypePassenger Car, Motorcycle, ATV, Van, RV, UTV, Truck, Watercraft, Tractor
Battery Capacity250 Amp Hours
Recharge Time48 minutes (full charge via USB-C Power Delivery)
Quick Charge5 minutes (enough for a jump start from a completely depleted battery)
LED Flashlight100-lumen LED with 7 light modes, including SOS & strobe
USB Charging Capability60-watt USB-C Power Delivery (input/output)
Included in the BoxJump starter, heavy-duty clamps, USB-C charging cable, microfiber storage bag
Warranty1-year limited warranty
NOCO Boost X GBX45 Jump Starter
CHECK PRICE ON AMAZON

Performance

The performance of a jump starter is what matters most when you’re in a pinch. NOCO has designed the GBX45 to meet the high demands of starting both gas and diesel engines with ease. Here’s a closer look at how it performs:

Jump-Starting Capability

The GBX45 provides a peak current output of 1250 amps, which is more than enough to jump-start vehicles with gas engines up to 6.5 liters and diesel engines up to 4.0 liters. This makes it suitable for most cars, trucks, motorcycles, RVs, and even boats or watercraft. Users report that the GBX45 does an excellent job of getting vehicles started quickly, even in cold weather or after a long period of disuse.

The integrated 60-second timer ensures that the device doesn’t drain its power unnecessarily, delivering consistent performance with up to six jump starts per charge. Even if the device is completely depleted, a quick 5-minute charge via USB-C can provide enough power for a jump start, which is a standout feature for emergencies.

Charging Efficiency

When it comes to recharging the unit itself, the NOCO Boost X GBX45 has been engineered for speed. It can recharge fully in just 48 minutes using the USB-C Power Delivery port. This is one of the fastest recharge times among portable jump starters and an essential feature for those who need a quick turnaround during a road trip or when caught in an emergency.

The 60-watt USB-C port also allows you to use the GBX45 as a power bank to charge your phones, tablets, laptops, and other USB-C devices. This dual-purpose function is especially useful during long road trips or outdoor adventures.

LED Flashlight

The integrated 100-lumen LED flashlight adds value by providing illumination in dark environments. It comes with seven light modes, including standard, SOS, and strobe. This is particularly helpful when you need to work on your car during nighttime emergencies or when you’re stranded in a poorly lit area. While it’s not the brightest flashlight available, its versatility makes it a useful addition.

NOCO Boost X GBX45 Jump Starter
CHECK PRICE ON AMAZON

Customer Feedback

The NOCO Boost X GBX45 generally receives positive feedback from customers, particularly for its compact design, ease of use, and powerful performance. Many users highlight how simple it is to operate, even for beginners. The inclusion of spark-proof and reverse polarity protection makes it a safe choice, giving users confidence that they can handle it without risk.

Positive Feedback

  • Ease of Use: Many customers love how intuitive and easy the GBX45 is to use. The heavy-duty clamps fit securely onto battery terminals, and the jump-start process is quick and hassle-free.
  • Compact Design: The compact and portable design makes it easy to store in a glove box, trunk, or even a motorcycle saddlebag, which is a huge plus for motorcyclists who require a smaller form factor.
  • Reliability: Users appreciate that the device works effectively even in harsh conditions, including extremely cold temperatures.
  • Fast Recharge: The quick recharge time is another feature that earns high praise from customers. The ability to recharge in just 48 minutes ensures that users aren’t left stranded for long.

Negative Feedback

  • Battery Life Concerns: Some users report issues with the battery not holding a charge or failing to charge at all after repeated use. While these instances appear to be isolated, they are a significant concern for some customers.
  • Inconsistent Performance: A few reviewers mention that the jump starter sometimes struggles with starting certain vehicles, especially larger trucks or vehicles that are more than the stated 6.5L engine capacity. However, this issue may vary depending on the condition of the vehicle’s battery or the environmental factors at play.
NOCO Boost X GBX45 Jump Starter
CHECK PRICE ON AMAZON

Pros and Cons

Pros

  • Compact and Portable: Easy to carry and store, making it an excellent option for vehicles with limited space.
  • UltraSafe Technology: Spark-proof and reverse polarity protection ensure safe usage.
  • Quick Recharging: Recharges fully in just 48 minutes, with enough power for a jump start in just 5 minutes.
  • Versatile Charging Capabilities: The 60-watt USB-C port doubles as both input and output, turning the device into a portable power bank.
  • LED Flashlight: Comes with a 100-lumen flashlight with multiple light modes, including SOS and strobe.
  • High Performance: Can jump-start vehicles with gas engines up to 6.5L and diesel engines up to 4.0L.

Cons

  • Inconsistent Battery Performance: Some customers report issues with the device not holding a charge or failing to start certain vehicles.
  • Not Ideal for Larger Vehicles: Despite being rated for engines up to 6.5L, some users report that it struggles with larger diesel engines or vehicles with deeply discharged batteries.

Final Verdict

The NOCO Boost X GBX45 Jump Starter is an impressive and highly capable device designed to make emergency jump-starts easier and safer. Its 1250-amp peak current, quick recharge time, and compact design make it a top choice for individuals who need a reliable jump starter that can fit into small storage spaces.

Enjoyed this review of NOCO Boost X GBX45 Jump Starter? Then be sure to check out our other lithium battery guides.

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