NOCO Boost Max GB251 Jump Starter 24V 3000A

The NOCO Boost Max GB251 is a lithium jump starter for 24V battery systems, built for heavy vehicles. It delivers 3000 A peak current and starts gasoline and diesel engines. NOCO quotes engines of 32 liters and up, in trucks up to Class 8, buses, RVs and agricultural, construction and mining equipment. The internal lithium-ion battery holds 133 Wh. Thanks to UltraSafe 2.0, the booster is spark-free and protected against reverse polarity, so you can connect it to any 24V battery. A built-in voltmeter shows the voltage and after 60 seconds you have to switch the unit off and on again for a new start. On the move it offers USB outputs of 5V 2.1 A per port, a 12V output of 15 A and a 600-lumen LED flashlight with 7 modes. The housing is IP65 with the ports closed and works from -20 to +50 °C.

What's inside

Mains plugs type A/C/G/I, 12V cable, XGC4 adapter, user manual and EVA case

Why this product

• 3000 A peak current for the 24V battery systems of trucks, buses and machinery

• For gasoline and diesel engines, NOCO quotes engines of 32 liters and up

• UltraSafe 2.0: spark-free and protected against reverse polarity

• Built-in voltmeter and 60-second timer for control while starting

• Internal 133 Wh lithium-ion battery, recharges in 8.5 hours via the 12V input or XGC4 adapter

• 600-lumen LED flashlight, USB outputs of 5V 2.1 A and a 12V output of 15 A

How to use

1. First check that the vehicle has a 24V battery system (This booster is for 24V only. The system voltage is usually printed on the battery or listed in the vehicle manual.)

2. Connect the red clamp to the positive terminal and the black clamp to the negative terminal (Reverse polarity protection and spark-free connection forgive a slip, but always check the markings carefully.)

3. Read the voltmeter and start the engine (If the start does not work within 60 seconds, switch the unit off and on again for a new start.)

4. Remove the clamps and recharge the booster (Charge it via the 12V input (12V/5A, max 14V) or the XGC4 adapter, which takes 8.5 hours.)

A handy companion to your jump starter: more tools for maintaining your vehicle.