24V 3000A Jump Starter NOCO GB251+

24V 3000A commercial lithium jump starter – NOCO Boost MAX GB251+

The GB251+ is made for 24V electrical systems, common on heavy trucks, buses and machinery. Its 3000A peak covers petrol and diesel engines of up to 32 L, from 6 to 16 cylinders, including class 8 trucks, motorhomes and farming, construction or mining equipment.

Keep in mind that the 3000A figure applies to 24V systems: it is not a 12V rating. UltraSafe 2.0 protection, a 60-second timer and a voltmeter are built in, and batteries are recognised from 3V, with manual override below.

The 137 Wh battery also feeds a pair of 5V, 2.1A USB sockets and an auxiliary output that runs at 12V (15A), not 24V. A full recharge needs 8.5 h, using either the XGC4 adapter or a 12V vehicle socket. It weighs 6.17 kg.

Technical data

How to size it

• —  Engine ceiling: 32 L petrol or diesel, on 24V.
• —  It starts 24V systems only: for 12V vehicles choose the GB250+ (5250A, up to 16 L).
• —  Fleets mixing 12V and 24V: the GB500+ has a selector and 6250A for engines up to 45 L.
• —  Minimum detection voltage is 3V, against 2V on the 12V GB250+.

Features

• —  3000A at peak for 24V lead-acid systems.
• —  Petrol or diesel, 6 to 16 cylinders, displacement of up to 32 L.
• —  Suited to class 8 trucks, buses, motorhomes and machinery on 24V.
• —  Spark-proof, polarity-safe connection with UltraSafe 2.0 thermal management.
• —  60-second timer that protects the internal charge.
• —  Voltmeter for reading the battery voltage.
• —  Detection from 3V; manual override mode available.
• —  137 Wh battery; a pair of 5V, 2.1A USB sockets and a 12V, 15A auxiliary outlet.
• —  8.5 h recharge via the XGC4 adapter (56W) or a 12V socket; IP65 with ports closed.

In the box

• —  NOCO Boost MAX GB251+ jump starter
• —  EVA case
• —  XGC4 mains adapter
• —  12V vehicle charging cable
• —  User guide