GB251+ 3000A 24V UltraSafe Lithium Jump Starter


  • Introducing our most powerful lithium jump starters yet. Designed for the largest, most challenging engine starts ever. With over 3000-amps of starting power, it can jump start gasoline and diesel engines up to 32-liters.
  • Safe and easy to use battery jump starter pack without the worry of incorrect connections or sparks. Safely connect to any 24-volt battery with our mistake-proof design featuring spark-proof technology and reverse polarity protection.
  • It’s commercial in every way. It jump starts almost every type of vehicle and equipment, including semi-trucks (up to class 8), motorhomes, coaches, buses, mining, agricultural, construction, and vocational equipment – 6, 8, 12, and 16 cylinder – and more. Plus, an integrated digital battery voltmeter for enhanced diagnostics.
  • Jump starters this powerful typically are enormous and weigh hundreds of pounds, but our high discharge lithium technology makes it the most compact and lightweight design in the world – weighing a mere 14-pounds. And its portable carrying case makes jump starting more convenient than ever.
  • It’s not just a lithium jump starter but also a portable power bank for recharging smartphones, tablets, and other USB devices, with an ultra-bright 600-lumen LED flashlight with seven light modes, including emergency strobe and SOS.


Technical Specifications

What’s in The Box

  • GB251+ Lithium Battery Jump Starter
  • 56-Watt XGC Power Adapter
  • 12-Volt 2-Foot XGC Cable
  • Protective Carrying Case
  • User Guide & Warranty Information

Starting Current

3000 Amps (Peak)



Battery Types

12V Lead-Acid Battery Systems

Internal Battery

137 Watt-Hour Lithium-Ion

Operating Temperature

-4°F to 122°F (-20°C to +50°C)

Charging Temperature

32°F to 104°F (0°C to +40°C)

USB (Output)

Dual 5V, 2.1 Amps


Natural Convection

Dimensions (LxWxH)

12.4 x 6.1 x 3.7 in


13.6 lbs

12V XGC (Input)

12V @ 4 Amp

12V XGC (Output)

12V @ 15 Amp

Gas Engine Rating

Up to 32.0 L, Safe On All Engine Sizes

Diesel Engine Rating

Up to 32.0 L, Safe On All Engine Sizes

LED Worklight