NOCO Boost GB40 1000A UltraSafe Portable Jump Starter
The most trusted lithium jump starter on the market. Compact, safe, and handles most cars and small trucks.
- Buy for most cars, crossovers, and small trucks with up to 6.0L gas engines
- Spark-proof and reverse polarity protection make it safe for anyone to use
- Compact enough to live permanently in the glove box
Best For / Not For
Best for
- Drivers of cars, crossovers, and smaller trucks
- Anyone who wants a jump starter that doubles as a USB power bank
- Buyers who want foolproof safety protection during use
Not for
- Owners of large trucks with 8.0L+ gas engines (get the GB70)
- Diesel truck owners who need the GB50 or GB70
- Buyers in very cold climates (lithium loses capacity in extreme cold)
Key Details
What Makes It Stand Out
The GB40 set the standard for modern lithium jump starters. The spark-proof connection is the standout safety feature , it checks polarity before allowing current to flow, which means even someone who has never used jumper cables before can use this safely.
The compact size is genuinely practical. Most jump starters live in a garage and get forgotten. The GB40 is small enough to stay in the car, which means it is there when you actually need it.
Value
The GB40 is priced in the mid-range for lithium jump starters. NOCO's build quality and safety track record make it worth the premium over cheaper alternatives from unfamiliar brands.
Pros and Cons
Pros
- 1000 peak amps handles most passenger vehicle gas engines
- Spark-proof clamps and reverse polarity protection
- LED flashlight and USB charging built in
- Compact and lightweight at under 2 lbs
Cons
- 1000 amps is borderline for larger 6.0L gas or diesel engines
- Lithium batteries lose capacity below freezing
- Needs periodic charging when stored
Bottom Line
Buy the NOCO Boost GB40 if you drive a car, crossover, or light truck and want a compact, safe lithium jump starter that lives in your vehicle without taking up space.
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