Description
Tab panes Compact Roadside Starting Power
NOCO Boost GB40 1000A Portable Jump Starter
Start compatible 12V vehicle batteries safely and independently, without needing another vehicle or traditional jump leads. Compact enough to keep in the car, yet powerful enough for petrol engines up to 6.0 litres and diesel engines up to 3.0 litres.
1000A Peak starting output 6.0L Maximum petrol engine 3.0L Maximum diesel engine 20 Up to 20 starts per charge
Power When You Need It Most
A flat vehicle battery can happen without warning. The NOCO Boost Plus GB40 gives you a compact source of portable starting power that can be used without waiting for another vehicle or roadside assistance.
The GB40 delivers up to 1000A of peak starting power and can provide up to 20 jump starts from a full charge under suitable conditions. Its NOCO UltraSafe system combines spark-proof technology with reverse-polarity protection to make normal battery connections more straightforward.
It also works as a portable USB power bank and features a built-in 100-lumen LED emergency light, making it a useful addition to a vehicle emergency kit.
Which Vehicles Is the GB40 Best Suited To?
01
Everyday Cars
A practical jump starter for many popular petrol and smaller diesel cars.
02
Motorcycles
Compact enough to store with motorcycle and powersport equipment.
03
Smaller Vans
Suitable where the engine remains within the stated capacity limits.
04
Roadside Travel
Useful for commuting, winter travel, holidays and emergency preparation.
ICT
InCarTec Buying Advice
The GB40 is a strong everyday choice when compact size, simple operation and convenient vehicle storage are the main priorities. For larger diesel vans, heavy 4x4s, larger motorhomes or regular professional use, consider a higher-output NOCO model such as the GB70.
Everything You Need in One Compact Kit
NOCO GB40 jump starter with battery clamps, charging accessories, storage bag and user guide.
Why Choose the NOCO GB40?
Feature 01
UltraSafe Battery Connection
Spark-proof technology and reverse-polarity protection help reduce common connection mistakes during normal use.
Feature 02
Portable USB Power
Use the GB40 to recharge compatible smartphones, cameras and other portable USB-powered devices while away from a normal power source.
Feature 03
100-Lumen Emergency Light
The built-in LED provides multiple brightness, flashing, strobe and SOS modes for roadside inspections and emergencies.
Feature 04
Compact IP65-Rated Housing
The rugged rubberised housing is easy to store and is rated IP65 against dust and water jets when the ports are securely closed.
Product Demonstration
See How to Jump Start a Vehicle
Watch the NOCO guide before using the GB40 and always follow the vehicle manufacturer’s approved jump-starting procedure.
Simple Four-Step Operation
1
Check
Confirm the battery is 12V and locate the approved jump-start terminals.
2
Connect
Connect the positive and negative clamps to the correct terminals.
3
Start
Check the indicators, switch on the GB40 and start the vehicle.
4
Recharge
Disconnect safely and recharge the GB40 after use where required.
More Product Information
Open the sections below for detailed specifications, vehicle suitability, safety guidance and product comparisons.
Starting Power and Engine Compatibility
1000A Peak Starting Output
The NOCO GB40 delivers up to 1000A of peak starting power. It is rated for compatible petrol engines up to 6.0 litres and diesel engines up to 3.0 litres.
This makes it suitable for many everyday cars, motorcycles, boats, lawn equipment and smaller vans.
Up to 20 Starts per Charge
A fully charged GB40 can provide up to 20 jump starts under suitable conditions.
The actual number will vary depending on the engine, battery capacity, battery condition, outside temperature and how long the unit has been stored between uses.
Recommendation: Check the charge level regularly and recharge the GB40 before long journeys, winter travel or extended periods of vehicle storage.
UltraSafe Protection and Battery Clamps
Spark-Proof Technology
Spark-proof technology helps prevent sparking during the normal connection process when the GB40 is used in accordance with the supplied instructions.
Reverse-Polarity Protection
Reverse-polarity protection alerts the user when the positive and negative clamps have been connected incorrectly.
Always identify the correct battery terminals or manufacturer-approved remote jump-starting terminals before connecting the unit.
Manual Override for Extremely Low-Voltage Batteries
The GB40 normally detects the voltage of the connected battery before allowing jump-start operation.
A severely discharged battery may have a voltage that is too low for the unit to detect automatically. Manual Override allows the GB40 to be activated when the correct battery polarity has already been positively identified.
Important: Manual Override disables some of the GB40’s normal safety protection. Only use it when the correct positive and negative terminals have been positively identified and you fully understand the procedure.
Video Guide Watch the NOCO Manual Override guide USB Power Bank and Recharging
Portable Device Charging
The GB40 can be used as a portable USB power source for compatible smartphones, tablets, cameras and other USB-powered devices.
This is useful during roadside emergencies, camping trips, vehicle recovery work and other situations where a normal power source may not be available.
Recharging the GB40
Recharge the jump starter through its USB input using a suitable powered USB connection. The charging time will depend on the output available from the connected power source.
Avoid storing the GB40 for extended periods with a low charge level. Periodically inspect the unit, charging cable and battery clamps for signs of damage.
Video Guide Watch the GB40 charging guide Built-In 100-Lumen LED Light
The integrated LED light provides useful illumination for roadside inspections, locating battery terminals in low light and attracting attention during an emergency.
The seven available operating settings include:
- 100% brightness
- 50% brightness
- 10% brightness
- Blinking mode
- Strobe mode
- SOS mode
- Off
What’s Included in the Box?
- NOCO Boost Plus GB40 portable lithium jump starter
- Heavy-duty battery clamps
- 12V vehicle charging adapter
- Micro-USB charging cable
- Microfibre storage bag
- User guide
Vehicle Compatibility
The GB40 is a universal portable jump starter rather than a vehicle-specific fitting product.
Suitability should be determined by the battery voltage, engine capacity and the vehicle manufacturer’s approved jump-starting procedure.
Common Applications
- Cars
- Motorcycles
- Smaller vans
- Compatible 4×4 vehicles
- Motorhomes within the stated engine limits
- Boats
- Powersport vehicles
- Lawn and garden equipment
Please note: The GB40 is designed for compatible 12V batteries only. Always check the engine size, battery voltage and vehicle manufacturer’s approved procedure before use.
Compare the NOCO GB40 and GB70 Everyday Choice
Choose the GB40
Best for everyday cars, motorcycles, smaller vans and motorists who want compact emergency starting power.
More Starting Power
Choose the GB70
Better suited to larger petrol and diesel engines, bigger 4x4s, larger vans and motorhomes.
| Feature | NOCO GB40 | NOCO GB70 |
|---|---|---|
| Peak output | 1000A | 2000A |
| Maximum petrol engine | Up to 6.0 litres | Up to 8.0 litres |
| Maximum diesel engine | Up to 3.0 litres | Up to 6.0 litres |
| Starts per charge | Up to 20 | Up to 40 |
| LED light | 100 lumens | 400 lumens |
| Best suited to | Cars, motorcycles and smaller vans | Larger cars, diesel vans, 4x4s and motorhomes |
View the NOCO Boost GB70 2000A jump starter
Technical Specifications
| Brand | NOCO |
|---|---|
| Model | Boost Plus GB40 |
| Product type | Portable lithium jump starter and power bank |
| Compatible battery voltage | 12V |
| Peak starting output | 1000A |
| Maximum petrol engine | Up to 6.0 litres |
| Maximum diesel engine | Up to 3.0 litres |
| Starts per charge | Up to 20 under suitable conditions |
| Internal battery | Lithium-ion |
| Connection protection | Spark-proof and reverse-polarity protection |
| Ingress protection | IP65 with the ports securely closed |
| LED light | 100 lumens with seven operating settings |
| USB power-bank function | Yes |
Important Safety Information
- Only use the GB40 with compatible 12V batteries.
- Do not use the unit on a visibly damaged, leaking or frozen battery.
- Confirm the correct positive and negative terminals before making any connection.
- Use manufacturer-approved remote jump-starting terminals where specified.
- Do not submerge the GB40 in water.
- Keep the unit away from flames and excessive heat.
- Do not leave the jump starter permanently connected to the vehicle.
- Do not use damaged clamps, cables or charging accessories.
- Store the unit securely and out of reach of children.
- Always read the supplied NOCO user guide before operation.
Do I Need a Jump Starter or Battery Charger?
A jump starter and a battery charger perform different tasks.
- Choose the NOCO GB40 when you need portable starting power to help start a vehicle with a discharged battery.
- Choose a NOCO GENIUS smart battery charger when you need to recharge, condition or maintain a compatible vehicle battery over time.
A jump starter is particularly useful for emergencies. A battery charger is normally the better option for vehicles that are stored, used infrequently or regularly complete short journeys.
Frequently Asked Questions
Is NOCO Boost Plus the same as the GB40?
Yes. GB40 is the model number of the NOCO Boost Plus 1000A portable lithium jump starter.
What engine size can the NOCO GB40 start?
It is rated for compatible petrol engines up to 6.0 litres and diesel engines up to 3.0 litres.
How many jump starts can it provide?
The GB40 can provide up to 20 starts from a full charge under suitable conditions. Actual performance depends on the engine, temperature and condition of the vehicle battery.
Can the NOCO GB40 charge a phone?
Yes. Its USB output can recharge compatible smartphones, tablets, cameras and other portable USB devices.
Is the GB40 waterproof?
The housing is rated IP65 when its ports are securely closed. It offers protection against dust and water jets but must not be submerged.
Can it start a completely flat battery?
An extremely low-voltage battery may not be detected automatically. Manual Override may be required, but this disables some normal safety protection and should only be used when the correct polarity has been positively identified.
How often should the GB40 be recharged?
Check its charge level regularly and recharge it after use, before a long journey and before extended storage.
Explore the NOCO Range
Need More Starting Power?
Compare NOCO portable jump starters, intelligent battery chargers and roadside power products available from InCarTec.
Shop the NOCO Range View the NOCO GB70 Contact InCarTec
Brand: NOCO
Car models: The years stated refer to the model’s years of manufacture, please check the item description for information about any changes there may be within these productions years.
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