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NOCO Boost Max 24v 3000 Amp Ultrasafe Lithium Jump Starter

Was: $1,249.95
Sale Price: $999.95
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Product InformationStore Part Number: GB251


The NOCO GB251+ is a 24v 3000 Amp UltraSafe Lithium Jump Starter. The GB251+ can operate in cold weather as low as -4°F and in hot weather as warm as 122°F. The GB251+ was designed for commercial use and can start a gas and diesel vehicles with an engine size up to 32.0L. It is also capable of starting up to a class 8 semi-truck, buses, agricultural and mining equipment, and vocation equipment with 6, 8, 12, and 16 cylinders.

The GB251+ lithium jump starter features a lightweight design yet offers higher cranking than similar sized lead acid jump starters. In comparison the GB251+ only weighs 13.6 lbs. offering 3000 Amps while a comparable lead acid jump starter sold by offers only 1800 Amps and weighs more than double at 36 lbs.

The NOCO GB251+ arrives with a 4-Amp AC Power Adapter capable of recharging the jump pack in 8.5 hrs*. The AC cord is detachable and comes with several plug types meant for worldwide use including TYPE-A (North America), TYPE-G (UK), TYPE-I (AU), and TYPE-C (EU). The GB251+ also arrives with a 12v XGC cigarette lighter adapter so the unit can be charged using a vehicles power port.

The GB251+ features an integrated digital voltmeter that illuminates when connected to a battery and doubles as a 60-second countdown timer. It also features a flashlight offering up to 600-Lumens, dual USB TYPE-A ports supporting up to 2.1 Amps, and a 12v 15-amp power port. These features paired with the 137 Watt/Hr. battery makes the GB251+ a great jump starter and portable battery pack!

Whats Included:

  • GB251+ Lithium Jump Pack
  • Integrated Battery Clamps
  • 56-Watt XGX 4-Amp Power Adapter
  • 12-Volt 2 ft XGC Cable
  • Protective Carrying Case


  • Rated at 3000 Amps!
  • Designed for Gas & Diesel Engines up to 32.0L.
  • Includes the XGC4 Power Adapter capable of recharging the jump starter in approximately 8.5 hrs*.
  • Automatic Power Saver: 60-Second Safety Timer requires you to jump the vehicle within 60 seconds. Should additional jumps be needed the unit can be reset.
  • 1-Year Warranty


*The time to recharge a GB251 will differ based on the discharge level and the power source used. Actual results may vary due to battery conditions and level of discharge.

Tech Specs

  • Dimensions (LxWxH): 12.43 x 8.62 x 3.68 in
  • Weight: 13.6 lb
  • Shipping Weight: 23 lb
  • DC Output System Voltage: 24v
  • Safe For: Lead-Acid Batteries
  • Model: GB251+
  • Manufacturer: NOCO
  • Starting Current: 3000 Amps
  • Internal Battery: 137 Wh
  • Operating Temperature: 4ºF to 122ºF
  • Charging Temperature: 32°F to 104°F
  • Warranty: 12 Month
  • Manufacturer Part #: GB251
  • UPC: 046221190410
  • Made In: Maylasia

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