NOCO Boost Sport 400A UltraSafe Lithium Jump Starter

Product no.: GB20

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  • Price excludes delivery



400 Amp UltraSafe Lithium Jump Starter



The GB20 is a portable lithium-ion battery jump starter pack that delivers 400-amps (4,650 J3S) for jump starting a dead battery in seconds.

It features a patented safety technology that provides spark-proof connections and reverse polarity protection making safe and easy for anyone to use.

It's a powerful battery booster that doubles as a portable power source for recharging USB devices, like a smartphone, tablet and more.

Designed for a car, boat, motorcycle, RV and more with engines up to 4ltr.

  • A lithium battery jump starter rated at 400 Amps (4,650 Joules3S).
  • Spark-proof connections and reverse polarity protection.
  • Recharges USB devices, like smartphones, tablets, and more.
  • 100 lumen LED flashlight with multiple modes, including SOS.
  • Jump starts engines up to 4 ltrs.
  • Provides up to 20 jump starts on a single charge.




Everything you need on one interface.

We designed the user interface to be simple and easy to understand. LED status indicators display the internal lithium batteries charge level and charging status. Error indicators show when connected in reverse polarity or temporarily disabled for thermal protection. Simply turn on the LED flashlight, recharge a USB device, or use manual override for deeply discharged batteries.



Multi-function jump starter.

Jump start cars, motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and lawn & garden equipment. Even recharge USB devices, like a smartphone, tablet and much more.



Jump starts per charge.
A powerful lithium jump starter capable of jump starting up to 20 vehicles on a single charge. It is rated for over 1,000 charge cycles and holds its charge level for over a year with minimal power loss.



Needle-nosed battery booster clamps.
Perfect for hard-to-reach battery applications.
Designed for connecting to batteries with restricted access to the battery terminals, like a motorcycle. The needle-nosed battery clamps feature an integrated eyelet connector that detaches and allows for permanent battery installation for plug-n-play jump starting.


Portable, hand-held design
Incredible power in a pocket-sized jump box.
Power for power, this lithium jump starter outperforms traditional lead-acid battery booster packs at a fraction of the size and weight. It's over 8X smaller and 8X lighter, and its lithium-powered design makes it more compact and portable than ever before. Conveniently store it in a pannier, topbox, tankbag, or toolkit.




Stay charged. Power your USB devices on the go.
How many times will a GB20 recharge my device?
The built in 2.1A USB out port can power all of your USB devices, such as smartphones, GoPro cameras, wireless headphones, and more. The battery capacity inside of your iPhone, for example, is measured in “milliamp-hours," or mAh—a way of measuring how long the device will last. Devices that are frequently being used, like phones and cameras, often require more power to run all day than the device’s battery is rated for. Boost's battery pack extends the life and running time of your device. Plus, powering your device from an external battery pack will reduce the internal battery’s charge cycles, extending the usable life.



100-lumen dual LED flashlight.
A rechargeable lithium-powered LED flashlight with seven light modes, including SOS and Emergency Strobe. With multiple luminosity settings, it is immediately adaptable to a variety of situations. Using it's powerful wash light will help you see your engine, help you change a tire at night or even warn oncoming traffic when you in need of roadside assistance.



Technical Specifications.

  • What's In The Box
    • GB20 Lithium Battery Jump Starter
    • Needle-Nosed Battery Clamps
    • Micro USB Cable
    • Microfiber Storage Bag
    • User Guide & Warranty Information
  • Starting Current - 400 Amps (Peak)
  • Joules 3S Rating - 4,650 J3S
  • Battery Types - 12 Volt Lead-Acid Batteries
  • Internal Battery - 24 Watt-Hour Lithium-Ion
  • USB Input - 2.1 Amps
  • USB Output - 2.1 Amps
  • LED Flashlight - 100 Lumens



Product Note Status Price
NOCO X-Connect 12 Volt Dual-Size Male Cigarette Plug NOCO X-Connect 12 Volt Dual-Size Male Cigarette Plug
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NOCO X-Connect M6 Eyelet Terminal Connector NOCO X-Connect M6 Eyelet Terminal Connector
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  • UK - Price Includes VAT
  • Non UK -  VAT will be removed at checkout
  • Price excludes delivery
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