6250A Starting Power
Delivers up to 6250A peak starting current for compatible petrol and diesel engines up to 45 litres.
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The NOCO Boost MAX GB500 is a professional 6250A lithium jump starter for compatible 12V and 24V lead-acid batteries. Rated for petrol and diesel engines up to 45 litres, it is ideal for HGVs, buses, coaches, motorhomes, agricultural machinery and construction equipment. Features include UltraSafe 2.0 protection, a 266Wh power bank, dual USB outputs, an integrated voltmeter and a 2200-lumen LED work light.
Heavy-duty portable lithium starting power for 12V and 24V lead-acid batteries, with support for petrol and diesel engines up to 45 litres.
The NOCO Boost MAX GB500 is a professional-grade 6250A portable lithium jump starter designed for compatible 12V and 24V lead-acid battery systems.
It is rated for petrol and diesel engines up to 45 litres, making it suitable for demanding commercial, industrial, agricultural and recovery applications. Typical uses include HGVs, buses, coaches, motorhomes, construction machinery, agricultural equipment and other large vehicles.
The GB500 also features UltraSafe 2.0 connection protection, a 266Wh portable power supply, dual USB charging outputs, a 12V accessory output, an integrated voltmeter and a powerful 2200-lumen LED work light.
High-output starting support for compatible 12V and 24V commercial trucks and heavy goods vehicles.
Suitable for compatible buses, coaches, motorhomes and other large passenger or leisure vehicles.
Portable starting power for compatible construction, agricultural and industrial equipment.
Designed for demanding roadside recovery, fleet maintenance and professional workshop use.
Choose the GB500 when you need one professional jump starter for both 12V and 24V lead-acid systems. It is intended for demanding commercial applications and larger engines where a conventional automotive jump starter may not provide sufficient starting capacity.
Delivers up to 6250A peak starting current for compatible petrol and diesel engines up to 45 litres.
One portable unit supports compatible 12V and 24V lead-acid starting batteries across a wide range of vehicles and equipment.
Spark-proof technology and reverse-polarity protection help reduce common connection errors during normal operation.
Dual USB outputs and a 12V accessory connection allow the GB500 to power or recharge compatible equipment and devices.
The built-in voltmeter displays the connected battery voltage and also functions as the 60-second jump-start countdown.
The high-output LED light provides seven operating modes for workshop, roadside and emergency use.
Connect the clamps to the correct battery terminals or manufacturer-approved jump-starting points.
Select the correct 12V or 24V setting and switch on the GB500.
Attempt to start the vehicle within the active 60-second jump-start window.
Switch off the GB500, safely remove the clamps and recharge the unit where required.
Open the sections below for detailed starting performance, safety information, charging, compatibility and specifications.
The NOCO GB500 delivers up to 6250A peak starting current and is designed for compatible 12V and 24V lead-acid starting batteries.
It is rated for petrol and diesel engines up to 45 litres and can be used across a wide range of large vehicles, commercial fleets and industrial equipment.
Actual starting performance depends on battery condition, engine size, temperature and the vehicle manufacturer’s approved jump-starting procedure.
Spark-proof protection helps prevent sparking during normal clamp connection when the GB500 is used in accordance with the supplied instructions.
The error indicator warns the user if the positive and negative clamps have been connected incorrectly.
Manual Override is available for deeply discharged batteries that are too low for the GB500 to detect automatically.
Important: Manual Override disables the normal spark-proof and reverse-polarity protection. Only use this function after confirming the correct battery polarity and reading the supplied user guide.
The NOCO GB500 is designed for compatible 12V and 24V lead-acid starting batteries, including:
The GB500 is not designed to jump start 6V batteries or lithium vehicle batteries. Never attempt to start a damaged, leaking or frozen battery.
The internal 266Wh battery provides portable power for jump-starting and operating compatible USB or 12V devices.
Two 5V, 2.1A USB outputs can recharge compatible smartphones, tablets, cameras, headphones and other USB-powered devices.
The 12V output can supply compatible accessories at up to 15A. Always check the voltage and current requirements of the connected device.
The GB500 can be recharged using the supplied 56W XGC power adapter or a compatible vehicle 12V auxiliary connection. A full recharge using the 56W charging system takes approximately 6–8 hours under suitable conditions.
The integrated 2200-lumen LED work light provides the following operating modes:
The built-in voltmeter displays the voltage of the connected battery to assist with basic diagnostics. During a jump-start sequence, the display also shows the 60-second countdown.
| Brand | NOCO |
|---|---|
| Model | GB500 |
| Product type | Professional lithium battery jump starter |
| Supported system voltage | 12V and 24V |
| Peak starting current | 6250A |
| Maximum petrol engine | Up to 45 litres |
| Maximum diesel engine | Up to 45 litres |
| Supported battery chemistry | Lead-acid |
| Internal battery | 266Wh lithium-ion |
| USB outputs | Dual 5V, 2.1A maximum |
| XGC input | 12V, 5A |
| 12V accessory output | 12V, 15A maximum |
| LED work light | 2200 lumens with seven modes |
| Operating temperature | -30°C to +50°C |
| Charging temperature | 0°C to +40°C |
| Storage temperature | -20°C to +50°C |
| Protection rating | IP65 with the port covers closed |
| Approximate dimensions | 311mm wide × 207mm deep × 162mm high |
| Cooling | Natural convection |
| Warranty | 1-year limited warranty |
Yes. The GB500 is designed to jump start compatible 12V and 24V lead-acid battery systems. Always select the correct voltage before operation.
The GB500 is rated for compatible petrol and diesel engines up to 45 litres. Starting performance will depend on the vehicle, battery condition and operating temperature.
No. The GB500 provides temporary starting power but does not replace a battery charger. Use a compatible NOCO battery charger to recharge and maintain the vehicle battery.
No. The GB500 is designed for compatible 12V and 24V lead-acid starting batteries and must not be used to jump start lithium vehicle batteries.
The GB500 has an IP65 protection rating when all port covers are securely closed. It can withstand suitable exposure to dust and water but must not be submerged.
Yes. The package includes a 56W XGC mains power adapter, charging accessories and a protective carrying case.
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