Introduction
There is perhaps no more helpless feeling on the road than turning the key in the ignition and hearing nothing but a weak click or a slow, struggling crank. A dead battery is one of the most common roadside emergencies, striking at the most inconvenient moments—early mornings, late nights, or in remote locations far from help. Traditional jumper cables, while effective, depend entirely on the presence of another vehicle and a willing stranger. Portable jump starters have emerged as a practical solution, empowering drivers to handle battery emergencies independently. The NOCO Boost GBX55 is designed for drivers who need a step up in power without moving to a commercial-grade unit. It sits in the middle of NOCO’s Boost X series, offering a substantial 1,750 amps of peak current alongside modern USB-C connectivity and a refined safety system. This article provides an educational overview of this device, exploring its features, design, and practical considerations for those thinking about adding it to their vehicle’s emergency kit.
Product Overview
The NOCO Boost GBX55 is a portable lithium-ion battery jump starter that delivers 1,750 amps of peak current for starting a dead 12-volt battery in seconds. It is part of NOCO’s Boost X series, which the company describes as an entirely new series rather than a simple upgrade. The GBX55 is engineered for a wide range of vehicles, including cars, motorcycles, trucks, ATVs, boats, RVs, vans, SUVs, and tractors, with compatibility for gasoline engines up to 7.5 liters and diesel engines up to 5.0 liters.
The device is built around a 46-watt-hour lithium-ion battery, which provides substantial power in a compact form factor. The GBX55 weighs approximately 2.58 pounds (1.17 kg) and measures 7.7 inches in height, 4.9 inches in width, and 2.5 inches in depth, making it suitable for storage in a glove compartment or trunk without taking up excessive space.
Beyond its primary function as a jump starter, the GBX55 also serves as a 60-watt USB-C power bank for charging laptops, tablets, smartphones, and other devices. It is housed in a rugged, water-resistant enclosure with an IP65 rating and comes with a 1-year hassle-free warranty.
Key Features
1750 Amps of Peak Power
The defining feature of the GBX55 is its 1,750-amp peak current output. This power is designed to jump-start gasoline engines up to 7.5 liters and diesel engines up to 5.0 liters quickly and reliably. The device uses high-discharge lithium technology for safe operation in any climate, releasing maximum energy at every start.
For context, the GBX55 offers more power than the GB50 (1,500 amps, 7.0L gas / 4.5L diesel), making it suitable for larger SUVs, light trucks, and vehicles with substantial engine displacement. The GBX55 also features a manual output mode for excessively discharged batteries below 3 volts. This mode forces the GBX55 to output, allowing you to start the engine when connected to a severely depleted battery.
USB-C Power Delivery (60W In/Out)
One of the most significant upgrades in the GBX55 is its 60-watt USB-C Power Delivery capability. The device can be fully recharged in approximately 1.2 hours when using a 60W USB-C charger, and it can go from 0% to jump-start ready in just 5 minutes of charge.
The 60W USB-C port works both ways—it can fast-charge the unit itself and also power external devices. This means the GBX55 can serve as a high-speed power bank for laptops, tablets, smartphones, wearables, and other USB-C devices. The internal power bank provides 60 watts of power—both in and out—making it a versatile power source for daily use.
UltraSafe 2.0 Technology
Safety is a primary focus of the GBX55’s design. The device is equipped with NOCO’s UltraSafe 2.0 technology, which builds upon the original UltraSafe system with enhanced thermal efficiency and power management. Key safety features include:
- Spark-Proof Technology: Designed to prevent sparks during connection, reducing the risk of ignition.
- Reverse Polarity Protection: Prevents damage from incorrect connection of the clamps to the battery terminals.
- Enhanced Thermal Efficiency: Provides better performance and longer battery life.
- Automatic Power Saver: A 60-second safety timer requires you to jump the vehicle within 60 seconds. Should additional jumps be needed, the unit can be reset.
These features are intended to make jump starting safe and straightforward, even for users with limited experience. The UltraSafe 2.0 system is described as a simple, mistake-free design that allows you to safely connect to any battery.
200-Lumen LED Flashlight with 7 Modes
The GBX55 is equipped with a built-in 200-lumen LED flashlight with seven light modes. The flashlight features various brightness settings, including SOS and emergency strobe signals, which can be used to flag down roadside assistance or alert others of your location. This can be useful for roadside inspections, signaling for help, or improving visibility when working on a vehicle in the dark.
Compact, Durable, and Weather-Resistant Design
The GBX55’s compact dimensions (7.7 inches by 4.9 inches by 2.5 inches) and 2.58-pound weight make it easy to store in a vehicle. The unit is housed in a rugged enclosure with an IP65 rating, meaning it is protected against dust and water splashes when ports are closed. This weather-resistant design adds to its suitability for life in a vehicle and for use in various outdoor conditions.
HD Precision Battery Clamps
The GBX55 includes heavy-duty jumper cable clamps that are designed to provide secure and reliable connections. The unit comes with integrated HD Precision Battery Clamps, a 24-inch USB-A to USB-C cable, a microfiber storage bag, and a user guide.
Operating Temperature Range
The GBX55 is designed to operate in temperatures as low as -4°F and as high as 122°F. The charging temperature range is 32°F to 104°F. This wide operating range ensures the device can function in various climates and seasons.
Materials and Design
The NOCO GBX55 is constructed with a focus on durability and user convenience. The exterior features a rugged, well-built housing that feels solid and substantial. The device’s IP65 rating indicates it is resistant to dust and water splashes, adding to its suitability for life in a vehicle.
The control interface is designed for simplicity. The unit includes a power button and a manual override button. The USB-C port is located on the device, with a rubberized cover to prevent dust and debris ingress. The front panel features a battery level indicator and status LEDs that provide clear feedback on the device’s condition and operation.
The overall design is consistent with NOCO’s signature black and grey color scheme. The product dimensions are 7.7 inches in height, 4.9 inches in width, and 2.5 inches in depth, with a weight of 2.58 pounds.
Performance
The GBX55 is designed to provide quick and reliable jump starts for a wide range of vehicles. In real-world testing, the device has been shown to start vehicles with dead batteries quickly and efficiently. One reviewer noted that the GBX55 “started the engine with ease” on a 2016 Cadillac 6.2-liter V-8. Another user reported that it started their old Land Rover 8 times before dropping one battery level.
The device’s performance in cold weather has also been praised. One user reported that it had been sitting in the car for well over 8 months, including during winter, and “worked perfectly” when needed. Another reviewer noted that the GBX55 “hasn’t let me down” and “still comes very highly recommended”.
The USB-C Power Delivery capability has been praised for its fast charging. A user noted that they charged the unit “within 45 mins from less than 50% full” using a high-wattage USB-C charger. The device can also be charged from a car when the vehicle is running.
Some users have noted minor cosmetic concerns, such as the plastic protecting the copper clips breaking on corners. There have also been isolated reports of charging issues and battery failures, though many users have had positive experiences. As one reviewer put it, “Functionally great unit, almost idiot proof”.
Common Uses
Emergency Jump Starting for a Wide Range of Vehicles
The primary use of the GBX55 is as a roadside emergency tool for jump-starting vehicles with dead or weak batteries. The process is designed to be simple and safe: connect the clamps to the battery terminals, power on the unit, and start the vehicle. The device’s UltraSafe 2.0 technology is designed to prevent common mistakes, such as reverse polarity connections, that could damage the vehicle’s electrical system or cause sparks.
High-Speed USB-C Power Bank
The GBX55’s 60W USB-C port allows it to charge laptops, tablets, smartphones, and other USB-C devices at high speed. This feature can be useful for topping up a laptop during a long journey or when access to a wall outlet is limited. The device functions as a high-performance power bank for USB-C devices.
Roadside Safety and Illumination
The built-in 200-lumen LED flashlight with seven light modes, including SOS and emergency strobe, can be used for roadside inspections, signaling for help, or improving visibility when working on a vehicle in the dark.
Routine Maintenance and Preparation
The GBX55 can be kept in a vehicle as a preventive measure, providing peace of mind for drivers who may encounter a dead battery. It can be particularly useful for vehicles that are parked for extended periods or for those who frequently travel in remote areas. One user noted that they keep the unit in their boot and top up the charge as needed.
Advantages
Powerful Performance for Larger Engines
The 1,750-amp peak current is designed to handle gasoline engines up to 7.5 liters and diesel engines up to 5.0 liters. This covers most SUVs, trucks, and many larger vehicles, making it more versatile than the GB50.
Ultra-Fast USB-C Charging
The 60W USB-C Power Delivery capability is a significant advantage, allowing for complete recharging in approximately 1.2 hours and the ability to go from 0% to jump-start ready in just 5 minutes. This is a substantial improvement over older micro-USB models.
Versatile 60W Power Bank
The 60W USB-C port works both ways, enabling the GBX55 to serve as a high-speed power bank for laptops and other USB-C devices. This multi-functionality adds significant value, making the device useful for more than just emergency jump starts.
UltraSafe 2.0 Safety Features
The spark-proof technology, reverse polarity protection, and enhanced thermal efficiency make the GBX55 safe and easy to use, even for those with limited experience.
Weather-Resistant Design
The IP65 rating and rugged construction make the GBX55 suitable for use in various outdoor conditions and for life in a vehicle.
Positive Customer Feedback
The GBX55 has received strong ratings from users, with a 4.4 out of 5-star rating from over 4,200 reviews on Amazon.ca and a 4.5 out of 5-star rating from nearly 3,900 ratings on Amazon.co.uk.
Things to Consider
No Hard Case Included
The GBX55 comes with a microfiber storage bag, but some users have expressed a preference for a hard case for more robust protection. A hard case is available as an additional purchase. One reviewer noted, “shame there is no hard case available”.
Not for the Largest Diesel Engines
While the GBX55 can handle diesel engines up to 5.0 liters, it is not suitable for larger commercial diesel engines. For those applications, NOCO offers higher-capacity models like the GBX75 and GBX155.
Premium Price Point
The GBX55 is positioned at a premium price point compared to some budget jump starters, typically ranging from approximately $130 to $260 depending on the retailer and region. While it offers a strong feature set and proven reliability, prospective buyers should consider their budget.
Some Reports of Longevity Issues
While many users have reported positive experiences, some have noted issues with charging after extended periods. One user reported that after their second use, the battery went flat and they were unable to recharge it. As with any electronic device, individual experiences may vary.
Comparison With Similar Product Categories
NOCO GBX55 vs. NOCO GB50
The GB50 is a previous-generation model offering 1,500 amps for gasoline engines up to 7.0 liters and diesel engines up to 4.5 liters. The GBX55 offers more power with 1,750 amps and broader engine compatibility (7.5L gas / 5.0L diesel). The GBX55 also features 60W USB-C Power Delivery, while the GB50 uses micro USB. The GBX55 is the better choice for those who need more power and modern charging capabilities.
NOCO GBX55 vs. NOCO GBX45
The GBX45 is a smaller model in the Boost X series offering 1,250 amps for gasoline engines up to 6.5 liters and diesel engines up to 4.0 liters. The GBX55 offers significantly more power for larger engines. Both feature 60W USB-C Power Delivery and UltraSafe 2.0 technology. The GBX55 is better suited for those with larger vehicles or who want additional reserve capacity.
Portable Jump Starters vs. Traditional Jumper Cables
Traditional jumper cables are simple, inexpensive, and do not require charging. However, they depend on the availability of another vehicle with a functional battery. Portable jump starters like the GBX55 offer self-sufficiency, allowing a driver to start their vehicle without assistance. They are also safer, with built-in protection against sparks and reverse polarity. The GBX55’s additional features, such as the 60W power bank and bright flashlight, further distinguish it from basic cables.
Boost X Series vs. Standard Boost Series
The Boost X series represents a significant evolution from the standard Boost series. Key differences include USB-C Power Delivery, faster charging times, enhanced UltraSafe 2.0 technology, and higher power output in comparable form factors. The Boost X series is designed for users who want the latest technology and maximum versatility.
Maintenance and Care
Regular Charging
The GBX55 should be recharged periodically, even when not in use, to maintain battery health. The device can be recharged using the included USB-C cable or a 60W USB-C wall adapter. To achieve the fastest charging speeds, users should use a 60W USB-C power adapter.
Storage
The unit should be stored in a cool, dry place, away from extreme temperatures. The GBX55 comes with a microfiber storage bag for protecting the unit and its accessories.
Cleaning
The device can be wiped clean with a soft, damp cloth. The rubberized casing and water-resistant design make it resistant to dirt and moisture, but it should not be submerged in water. The clamp terminals should be kept clean and free from corrosion.
Battery Health
The GBX55 uses a 46-watt-hour lithium-ion battery. To maintain battery health, it is recommended to recharge the device every few months, even when not in use. The device is designed to operate in temperatures ranging from -4°F to 122°F, and charging should occur between 32°F and 104°F.
Frequently Asked Questions
What vehicles can the NOCO GBX55 jump-start?
The GBX55 is rated for gasoline engines up to 7.5 liters and diesel engines up to 5.0 liters. This covers cars, SUVs, trucks, motorcycles, ATVs, boats, RVs, vans, and tractors.
How long does it take to charge the GBX55?
The GBX55 can be fully recharged in approximately 1.2 hours using a 60W USB-C charger. It can go from 0% to jump-start ready in just 5 minutes of charge.
Is the GBX55 safe to use?
Yes, the GBX55 is designed with UltraSafe 2.0 technology, including spark-proof connections, reverse polarity protection, enhanced thermal efficiency, and an automatic power saver.
Does the GBX55 come with a charger?
The GBX55 includes a 24-inch USB-A to USB-C cable. It does not include a USB-C wall adapter, so users will need to provide their own to achieve the fastest charging speeds.
Can the GBX55 charge my laptop?
Yes, the GBX55 includes a 60W USB-C Power Delivery port that can fast-charge laptops, including MacBooks. It functions as a high-performance power bank for USB-C devices.
Does the GBX55 have a flashlight?
Yes, the GBX55 features a 200-lumen LED flashlight with seven light modes, including standard flashlight, strobe, and SOS signals.
Is the GBX55 waterproof?
The GBX55 has an IP65 rating, meaning it is protected against dust and water splashes when ports are closed. It is not fully waterproof.
What is the warranty on the GBX55?
The GBX55 comes with a 1-year hassle-free warranty.
What is included in the box?
The GBX55 typically includes the jump starter unit, integrated HD Precision Battery Clamps, a 24-inch USB-A to USB-C cable, a microfiber storage bag, and a user guide.
What is the manual override feature?
The manual override feature allows the GBX55 to work on batteries that are below 3 volts. It forces the unit to output power, allowing you to start the engine when connected to an excessively discharged battery.
How much does the GBX55 weigh?
The GBX55 weighs approximately 2.58 pounds (1.17 kg).
What is the peak current output?
The GBX55 delivers 1,750 amps of peak current.
Final Thoughts
The NOCO Boost GBX55 1750A UltraSafe Jump Starter offers a compelling combination of power, modern connectivity, and safety features for drivers who need reliable emergency starting capability for a wide range of vehicles. Its 1,750-amp peak output is designed to start gasoline engines up to 7.5 liters and diesel engines up to 5.0 liters, covering everything from small cars to large SUVs and light trucks. The 60W USB-C Power Delivery capability is a significant advantage, enabling ultra-fast recharging and the ability to power laptops and other USB-C devices. The UltraSafe 2.0 technology provides multiple layers of protection, including spark-proof connections, reverse polarity protection, and enhanced thermal efficiency. The built-in 200-lumen LED flashlight with emergency modes adds practical value for roadside use.
While the lack of a hard case and the premium price point may be considerations for some users, the GBX55’s strong reputation, proven performance, and comprehensive feature set make it a compelling option for those seeking a dependable, high-capacity jump starter with modern connectivity. For drivers who need the power to start larger vehicles and want the convenience of USB-C fast charging, the NOCO Boost GBX55 presents a practical option worth considering.