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Giant Bicycles has filed a U.S. patent describing a power-meter pedal that generates electricity as the rider pedals, charging an onboard energy-storage element. The filing outlines a design, not a confirmed product; Giant says some projects it investigates do not proceed to production.
Giant Bicycles has filed a U.S. patent describing a power-meter pedal that generates electricity as the rider pedals, with the aim of reducing the need to replace or recharge a conventional battery. The filing sets out a potential design, but does not confirm that Giant will make or sell the pedal.
The patent describes a pedal containing a generator and an “energy storage element” to supply power to the meter’s sensor. Its diagrams show a conventional-looking pedal body and spindle, with the generator arranged inside the pedal. A stator is mounted on the spindle, while a rotor sits around it on the inner surface of the pedal body.
As the rider turns the pedals, the rotor spins relative to the stator. The patent’s proposed arrangement uses that motion to generate direct-current electricity, which charges the energy-storage element and powers the sensor. The filing describes the mechanism; it does not establish how much electricity the unit would produce, how long it could operate without pedaling, or how the design would perform in everyday riding.
Giant’s patent says that frequently changing or removing a conventional power-pedal battery to charge it is inconvenient. The source report notes that replaceable coin-cell batteries need periodic replacement, while rechargeable units must be connected to a power source or removed from the bike for charging. Opening a pedal to replace a battery can also create a potential route for water ingress, though the report does not quantify that risk for particular products.
A Power Meter That Charges While Riding
If developed into a product, the design could make a power meter less dependent on battery replacement or plug-in charging. That could reduce routine maintenance for riders and avoid the need to remove a rechargeable pedal from a bike to charge it. The practical benefit would depend on the generator’s output, the energy-storage capacity and the meter’s power needs—details not established in the report.
The proposal is narrowly aimed at powering the pedal’s own low-voltage electronics. The report says the patent does not appear to describe a system for supplying power to a bike’s other accessories, such as lights or a radar unit. It should not be read as a replacement for a bicycle dynamo hub or as a broad solution for powering onboard equipment.
For riders, the distinction between a patent and a product matters: there is no confirmed release, price or availability. The filing signals that Giant has explored the concept, not that cyclists can expect to buy it.
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Battery Trade-Offs in Power Pedals
Power meters measure a rider’s output using sensors such as strain gauges, which need an electrical supply. As described in the Cycling Weekly report, existing power-meter products commonly use either a replaceable coin-cell battery or a rechargeable lithium-ion battery. Each approach brings a different charging or maintenance task.
Generating electricity from pedaling is already used in some exercise bikes, but the report points out that fitting a generator into a compact pedal presents a different engineering challenge. A pedal has limited space and must function as a durable cycling component. The patent diagrams place the rotor and stator within that pedal assembly, but the source does not provide independent testing or evidence that the arrangement has reached a working prototype.
Giant and its associated brands have explored other bike-electronics ideas, according to the report, including systems that use a shared battery for accessories. It also cites Shimano’s Q’Auto system as an example of an effort to reduce battery needs in electronic shifting. Those examples provide industry context, but they do not confirm that the patented pedal will be developed or adopted.
““Frequently changing or removing the battery of the conventional power pedal to charge is inconvenient to the rider.””
— Giant’s patent, as quoted by Cycling Weekly
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From Patent Filing to Product
The source does not state when the U.S. patent was filed, whether it has been granted, or whether Giant has built a working version of the pedal. Giant has not announced a launch date, price, specifications or production plans in the material provided. The company’s statement says only that it investigates new technologies and that some projects do not proceed.
Important technical questions also remain unanswered, including the generator’s charging rate, the storage element’s capacity, performance at different pedaling speeds, durability, water resistance and any effect on pedal weight or feel. The patent drawings and description cannot by themselves establish real-world performance. It is also unclear whether the design would be used in a Giant-branded product or another brand in the company’s portfolio.
bike power meter with built-in generator
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Awaiting a Development Decision
The next meaningful development would be confirmation from Giant that it plans to advance the concept, followed by product specifications, testing information or a launch announcement. Until then, the patent remains evidence of a proposed design rather than a purchase option. The source report notes that Giant and Liv sponsor professional teams, which could offer a testing environment if the company chose to develop the pedals, but it does not report that team testing is planned or underway.
Riders considering a power meter should continue to compare currently available products on their stated battery type, charging method and maintenance requirements. No timing for a commercial decision is confirmed, and the patent filing alone does not indicate when—or whether—Giant will provide further information.
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Key Questions
What has Giant filed a patent for?
Giant has filed a U.S. patent describing a power-meter pedal with an internal generator. The proposed generator uses pedal rotation to produce electricity for an energy-storage element and the sensor.
Does the patent mean the pedal will go on sale?
No. A patent describes a proposed invention; it does not confirm production or a retail launch. Giant told Cycling Weekly that some projects it investigates are taken forward and some are not.
How would the pedal generate electricity?
The patent places a rotor inside the pedal body and a stator on the spindle. Pedaling turns the rotor relative to the stator, with the proposed arrangement generating direct-current power to charge the onboard energy-storage element.
What practical details are still unknown?
The source does not give a launch date, price, battery or storage capacity, charging rate, weight, durability results or real-world test data. It also does not confirm whether Giant has built a working prototype.
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