NOCO
NOCO Boost GB40 1000A UltraSafe 12V Lithium Jump Starter
Score
The NOCO Boost GB40 is a compact 12V lithium jump starter built for drivers who want emergency starting power without carrying bulky jumper cables or relying on another vehicle.
Why it stands out
- 1000A peak current rating for 12V vehicle jump starting
- Rated for gas engines up to 6.0L and diesel engines up to 3.0L
- Spark-proof design and reverse polarity protection help reduce connection mistakes
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Score Breakdown
Best For
It is best for everyday drivers, commuters, boat owners, RV users, and small truck owners who want a portable jump starter rated for gas engines up to 6.0 liters and diesel engines up to 3.0 liters.
Tradeoffs to note
- Not intended for larger diesel engines above the stated 3.0L rating
Why We Like It
The GB40 stands out because it combines a practical 1000A peak rating, compact storage size, spark-proof connection design, and reverse polarity protection in one easy-to-carry unit. For most personal vehicles, it offers a strong balance of power, portability, and simplicity. We also like that it includes useful emergency extras without becoming overly complicated. The USB output can help charge small devices in a pinch, and the 100-lumen flashlight with multiple modes is useful for nighttime roadside situations.
What Buyers Notice
Public buyer feedback commonly highlights its compact size, simple clamp setup, and usefulness for roadside emergencies. Many shoppers also mention that checking the charge periodically helps keep it ready for unexpected battery trouble.
Who Should Buy It
Buy the NOCO Boost GB40 if you want a compact, reputable 12V jump starter for a car, SUV, motorcycle, boat, or light truck and prefer a unit that is easy to store, simple to use, and built with connection-protection features.
Detailed Review
The NOCO Boost GB40 is designed as a practical emergency jump starter for common 12V vehicles. Its 1000A peak rating and engine support up to 6.0L gas or 3.0L diesel make it a strong match for many cars, SUVs, motorcycles, boats, and light trucks.
Its biggest advantage is the balance between size and capability. At about 2.45 lb, it is small enough to keep in a vehicle year-round, but it still offers enough rated output for many everyday starting situations. The included heavy-duty clamps also make it feel more complete than a basic battery pack.
Ease of use is another key point. The GB40 includes spark-proof technology and reverse polarity protection, which are helpful for shoppers who do not jump-start vehicles often. Clear indicator lights and a simple power button layout make the process approachable, though users should still read the instructions before using manual override or connecting to a deeply discharged battery.
- 1000A peak lithium jump starter for 12V lead-acid batteries
- Rated for up to 20 jump starts per charge under suitable conditions
- USB output for emergency device charging
- 100-lumen flashlight with seven light modes
- IP65-rated housing with rubberized over-molded casing
The main buying consideration is vehicle size. The GB40 is well positioned for typical personal vehicles, but shoppers with larger diesel trucks or vehicles that require extended cranking should consider a higher-output model. For most daily drivers who want a compact emergency starter from an established jump-starter brand, the GB40 is a very strong option.
FAQ
What size engine is the NOCO GB40 rated for?
NOCO rates the GB40 for gas engines up to 6.0 liters and diesel engines up to 3.0 liters.
Does the GB40 work with 12V batteries?
Yes. It is designed for 12V lead-acid vehicle batteries.
Can the NOCO GB40 charge a phone?
Yes. It has a 5V 2.1A USB output for emergency charging of phones and other small USB devices.
Does it include jumper clamps?
Yes. The package includes the GB40 jump starter, heavy-duty precision battery clamps, a USB-C cable, a microfiber storage bag, and safety and warranty information.
How heavy is the NOCO GB40?
The official listed weight is 2.45 lb, making it easy to store in most vehicles.
