Gen 25 (G25) Hydrogen Fuel System:     Technical Specifications –  apr 2025

 Gen 25 systems in Dewalt box Hydrogen Rating

The Gen 25 system has been designed for very large diesel engines and in particular for engines with engine capacity up to and greater that 20 liter capacity.  The Gen 25 System is based on the highly successful Gen 20 Design  but has been increased in size , current carrying capacity and Gas output.  The Electrode plate area of the  Gen 20 system has been increased from 6800 square cm to 14800 square cm  – over double the electrode area of the Gen 20 system. The current capacity has increased and the Gas output rate has massively increased as well.  A major advantage of this larger Gen 25 System is that it is far more efficient and able to produce far more gas without increasing the current and Voltage input very much.

• Up to 6 Liters per minute

Voltage

• 12 Volts (+/- 2v) Standard fitment

Current Range

• 35 to 40 Amps

Engine Suitability

• Very large heavy loaded Trucks Engines up to 20 Litres PLus

Type of Usage

• Highway
• City Drive
• Off Highway
• Static

Fuel Savings

(Applicable to Diesel Vehicles Only) (Note: Fuel savings are dependent on various factors and cannot be rigidly fixed to any one specific number. For Petrol vehicles, no specific testing has been conducted yet, hence savings data or the amount of Hydrogen needed for savings is yet to be determined.)

• Highway Driven Vehicles: Up to 32%     ( test reports in a 27 tonne 7.2 L  2022 truck-  see webpage)
• City Driven Vehicles: Up to 32%       ( test reports in a 27 tonne 7.2 L  2022 truck-  see webpage)
• Off Highway: Up to 32%       ( test reports in a 27 tonne 7.2 L  2022 truck-  see webpage)
• Static: Up to 32%         ( test reports in a 27 tonne 7.2 L  2022 truck-  see webpage)

Emission Reduction

• CO2 Savings: Up to 57% reduction in net CO2 addition.  ( test reports in a 27 tonne 7.2 L  2022 truck-  see webpage)

Voltage Requirements for 24V Vehicles

• Gen 25 units have standard 12V fitment and cannot be used for 24V Vehicles. Use K40 if your vehicle has 24V power supply.
• 24 V vehicles can use a Redarc 24V/12V converter

System Servicing

• The first service is required after 3 months of use. Subsequent servicing is recommended every 6 months

System Life

• Although not fully tested, the expected lifespan of the system is projected to be more than 5 years.

System Physical Dimensions – Mounted into Welded Steel,  Aluminum enclosure box or Dewalt ToughBox 2 (53 cm x 35 cm x 35 cm)

• Width: 30 cm
• Length: 43 cm
• Height: 35 cm

System Weight

• Empty System: 22kg
• Fully Filled System: 28kg

Latest developments for these systems include the  use of new Resin filter system to increase the purity of the water electrolyte .  This development removes impurities from the water to produce Chemistry laboratory grade distilled to produce a purity of 52ppm from tap-water (800pm) or ground water 1500 ppm.

Removing impurities prevents any unwanted oxidation of the anode of an electrolysis unit , producing more gas for the electrical energy input and wasting much less energy as heat.

The Resin filter capsule is able to produce 50,000 litres of pure water and has a lifespan of 5000 hours.  The Capsule is easily replaced / serviced with a new filter module.  Contact Gavan on 0403177183 for more information of this produce.   Photos of the resin filter is seen on the “Shop” on this site.

For more detailed information or any specific queries, please feel free to contact our technical support team.

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