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GB50 geniusBOOST XL | Lithium Jump Starter


Safely jump-start a dead battery in seconds with the NOCO GB50 geniusBOOST XL 1500A, 12V Lithium Jump Starter.

GB50 Booster Pack Jump Starter

This 12V lithium booster pack is designed for jump starting a wide range of vehicles, including: boats, motorcycles, lawn tractors, ATVs, as well as cars, vans, SUVs and trucks with up to 7.0L gas or 4.5L diesel engines. The Boost XL is ultra-portable, lightweight, compact, and equipped with spark-proof technology guaranteeing reverse polarity protection. The internal USB battery pack makes it easy to recharge your personal devices on-the-go, and the Hot and Cold LED indicators of the internal battery determine when your GB50 is outside operating temperatures to help protect your batteries and device.  


  • Reverse polarity protection, 100% Spark-proof
  • Starting Current 1500 Amps (Peak)
  • Internal Battery 35 Watt-Hour Lithium-Ion
  • 200 lumen ultra-bright work light
  • Light modes: Cold & Hot LED indicators, flashlight, emergency strobe and more!
  • Recharge the GB50 from any USB or 12V port
  • Charge smartphones, tablets, GPS and more
  • USB IN/OUT ports – 2.1A
  • Easy to use, intuitive design
  • Compact design – 8X lighter16X smaller, and 30% more powerful than its lead acid "equivalent.".
  • Rechargeable – AC power or 12V car adapter.
  • Holds a charge 4X longer than the traditional leading jump starters 
  • Includes: GB50 Lithium Battery Jump Starter, Heavy Duty Precision Boost Battery Clamps (23" length), 40" Micro USB Cable, 12V Car Charger, Microfiber Storage Bag, User Guide & Warranty



Part # GB50
Internal Battery
Lithium Ion
Peak Current Rating
1500A (12V)
Recharing Time 2A (4.5hr) / 1A (9hr)
Operating Temp.
-20°C (-4°F) to +50°C (122°F)
Charging Temp. -18°C (0°F) to +40°C (104°F)
Micro USB (Input) 5V, 2.1A
USB (Output)
5V, 2.1A
Housing Protection IP65 (with ports closed)
1.65 lbs.
LxWxH (in.)
7.7 x 3.4 x 1.9


View / Download GB50 Spec Sheet