Hydrogen Power for Gardening Equipment

 

 

Lithium-ion batteries are everywhere. From phones, laptops, and watches to power tools and electric cars, lithium technology quite literally powers our lives. But there’s a hidden downside, what happens to the battery once it’s disposed of?

 

Lithium-based batteries are notoriously difficult to recycle, and despite existing programs, a large percentage still end up in landfills. For high-power applications that require large amounts of lithium, their usefulness often comes at a significant environmental cost. Over time, battery casings degrade, chemicals leak, and valuable materials are lost instead of recovered. As demand for higher-capacity batteries continues to rise, so does the scale of this problem.

In our design project, we set out to address this issue, not by improving battery recycling alone, but by questioning the dependency on batteries for certain applications in the first place. Instead of asking how we can dispose of batteries more responsibly, we wanted to 

 

In other words, what if hydrogen could replace lithium for high-power applications?

 

Hydrogen offers a compelling alternative. It has a high energy density, produces no toxic waste at the point of use, and can be generated on demand. Rather than storing energy chemically in a battery that degrades over time, hydrogen systems convert fuel directly into usable power, eliminating many of the long-term disposal concerns associated with lithium-ion technology.

  

Our Design 1 project specifically targeted gardening and lawn equipment—tools that require high bursts of power, are frequently used outdoors, and are increasingly shifting toward large battery packs. Lawn mowers, trimmers, and similar equipment often require multiple lithium batteries over their lifetime, making them an ideal candidate for an alternative power system.

 

For our design, we chose to explore a hydrogen-powered internal combustion engine. In this system, hydrogen gas is combusted to produce mechanical energy, much like a traditional gasoline engine, but without carbon emissions or battery waste. This approach allows for familiar mechanical designs while removing the need for large lithium battery packs.

 

To validate our concept, we conducted small-scale tests using a hydrogen generation system. These tests demonstrated that hydrogen could be produced reliably and used as a practical energy source at a small scale, supporting the feasibility of our approach for power equipment applications.

 

For our technical deliverable, we developed a mock prototype that demonstrates how a hydrogen-powered system could be integrated into existing gardening equipment. While not a full production model, the prototype illustrates the core idea: reducing reliance on disposable and rechargeable batteries by replacing them with cleaner, more sustainable energy systems.

 

By rethinking where batteries are truly necessary, and where alternatives like hydrogen make more sens we hope to reduce the environmental impact of everyday tools while opening the door to more sustainable power solutions.