Wireless Power FAQs

Wireless power is the transfer of electrical energy from a power source to a device without the need for physical connectors, charging cables, or exposed electrical contacts. Depending on the application, wireless power can be delivered through technologies such as radio frequency (RF), inductive charging, magnetic resonance, and other electromagnetic methods.

Powercast offers wireless power solutions designed to help reduce wires, battery replacement, charging contacts, and maintenance across connected devices and systems. Our portfolio supports a wide range of applications, from low-power sensors and IoT devices to higher-power wireless charging systems.

Wireless power works by transferring energy from a power source to a device without a physical wire or charging contact. A transmitter sends energy through an electromagnetic field, and a receiver inside the device captures that energy and converts it into usable electrical power.

The exact process depends on the wireless power technology being used. For example, RF wireless power uses radio frequency energy sent over the air, while inductive and resonant technologies use magnetic fields to transfer power over shorter distances or within defined charging zones.

Wireless power can be delivered through several different technologies, each designed for different power levels, distances, and applications.

Common types include radio frequency (RF) wireless power, traditional inductive charging, magnetic resonance, and SmartInductive™ Technology. RF wireless power is often used for low-power, longer-range applications such as sensors and IoT devices. Inductive and resonant technologies are typically used for closer-range charging, while SmartInductive™ Technology is designed for more controlled, efficient wireless power delivery in medium-to-higher-power applications.

Yes. Powercast technology is designed with safety, compliance, and real-world deployment in mind. Powercast transmitters and generators operate within applicable regulatory limits and are approved for use in the United States and Canada.

Powercast technology uses radio waves, which are also produced by many everyday wireless devices such as mobile phones, wireless sensors, cordless phones, and security systems. RF energy decreases rapidly with distance from the transmitter. In typical use, a mobile phone user receives far more RF energy from their own phone than from a properly installed Powercast transmitter.

Powercast technology is intended for applications where wires, batteries, or charging contacts create cost, maintenance, reliability, or design challenges. These applications may include IoT sensors, RFID sensor tags, smart building devices, industrial monitoring systems, electronic shelf labels, smart cards, illuminated packaging, asset tracking devices, consumer electronics, wearables, and other connected products.

Different Powercast technologies are suited for different use cases. RF wireless power is often used for low-power, long-range, or battery-free applications. Magnetic resonance and SmartInductive™ Technology can support applications that require higher power levels, greater placement flexibility, or controlled wireless charging environments.

Powercast offers a range of wireless power technologies, development kits, and integration solutions for companies building battery-free, wire-free, or maintenance-reduced products. Our portfolio includes RF wireless power for long-range, low-power applications; SmartInductive™ technology for controlled, high-efficiency mid-range power transfer; and magnetic resonance technology for higher-power, multi-device wireless power zones. 

Powercast also offers development kits and design support to help engineering teams evaluate, prototype, and integrate wireless power into new or existing products. Magnetic resonance evaluation kits, for example, allow teams to test wire-free power zones with generators, receivers, and field probes for product development.

Powercast works with companies and partners across consumer, industrial, IoT, and connected-device markets. However, many customer and partner relationships are protected by confidentiality agreements.

Because of this, Powercast cannot publicly disclose every company or product program currently in development. Public product announcements are typically made when customers or partners are ready to bring products to market.

Yes. Powercast can help evaluate your application and recommend the wireless power technology that best fits your requirements.

Important factors include power level, transfer distance, device size, placement flexibility, charging behavior, operating environment, battery requirements, regulatory considerations, and production goals. Because Powercast supports multiple wireless power technologies, our team can help compare RF Power, Magnetic Resonance, SmartInductive™ Technology, and other solutions to identify the best fit for your use case.

More questions? Reach out to our team.

RF power is electrical energy carried by radio frequency signals. In wireless power applications, RF energy can be transmitted through the air and received by a device, where it is converted into usable DC power.

Powercast’s RF wireless power technology is well suited for low-power devices that benefit from wireless, contactless, or battery-free operation.

Powercast RF wireless power systems use a transmitter to send RF energy over the air. A small Powerharvester® receiver, embedded into a device or system, captures that RF energy and converts it into DC power.

The RF energy may come from a dedicated Powercast transmitter, such as a Powercaster® or PowerSpot®, or from approved RF sources such as UHF RFID readers or NFC point-of-sale readers. The converted DC power can be used to directly power a battery-free device, recharge a battery, or support a device with intermittent power needs.

The range of Powercast RF wireless power depends on the transmitter, receiver, antenna design, device power requirements, orientation, line of sight, environment, and regulatory limits.

Powercast public materials reference RF power delivery across a range of distances depending on the product and application. Some RF systems are designed for shorter-range consumer charging, while low-power sensor and IoT applications may operate at much longer distances. In general, lower-power devices can operate farther from the transmitter, while higher-power devices require shorter range or more optimized system design.

For a specific application, use our Radio Frequency Power Calculator or Contact Us.

The amount of power delivered by RF wireless power depends on factors such as transmitter output, distance, antenna gain, receiver efficiency, orientation, environment, and the device’s power consumption.

Powercast RF transmitters operate within applicable regulatory limits. On the receiver side, harvested power may range from low microwatts to higher levels depending on the system design and distance from the transmitter. Powercast RF technology is generally best suited for low-power applications such as sensors, RFID sensor tags, beacons, smart labels, small electronics, and devices with intermittent charging needs.

For higher-power applications, Magnetic Resonance or SmartInductive™ Technology may be better suited.

For a specific application, use our Radio Frequency Power Calculator or Contact Us.

RF wireless power is best suited for low-power devices where wiring, battery replacement, or physical charging contacts are difficult, expensive, or impractical.

Common applications include IoT sensors, RFID sensor tags, smart cards, electronic shelf labels, asset tracking devices, environmental sensors, industrial monitoring devices, smart building sensors, battery-free BLE tags, illuminated packaging, wearables, game controllers, keyboards, mice, remotes, and other low-power connected devices.

Powercast Solutions.

RF wireless power can pass through many non-metallic materials, including some plastics, packaging, glass, and walls. However, performance depends on the material, thickness, distance, antenna placement, and surrounding environment.

Metal, shielding, dense materials, or certain device enclosures can reduce or block RF energy. For this reason, application-specific testing is recommended when designing RF wireless power into a product or deployment environment.

Magnetic resonance is a wireless power technology that uses magnetic fields to transfer power across a defined area. In Powercast-supported magnetic resonance solutions, a generator and loop structure create a shared wireless power field that can deliver energy to compatible receiving devices.

This approach is useful for applications that need more placement flexibility than traditional inductive charging and may support multiple devices within the same powered area.

Magnetic resonance wireless power works by creating a magnetic field through a transmitting structure, such as a loop embedded in or around a surface. Compatible receiving devices placed within the field can capture energy without physical connectors or precise pad-to-device alignment.

Powercast’s magnetic resonance offering is designed for defined power zones, such as desktop or workstation-sized areas, where multiple compatible devices can receive power within the same field.

Traditional inductive charging is usually a point-to-point charging method that requires close placement and fairly precise alignment between the charger and device.

Magnetic resonance can provide more placement flexibility within a defined field. Instead of placing one device on one specific charging spot, magnetic resonance can support a shared power zone where compatible devices can receive power without the same level of precise alignment.

Magnetic resonance wireless power is best suited for applications that need a defined power zone, higher power than typical RF harvesting, and more placement flexibility than traditional inductive charging.

Potential applications include consumer electronics, desktop power zones, workstations, automotive systems, robotics, drones, medical devices, telecom equipment, industrial systems, and environments where multiple devices may need power in the same area.

SmartInductive™ Technology is Powercast’s controlled, high-efficiency wireless power technology that uses magnetic fields to deliver power between a transmitter and receiver. It combines the strengths of traditional inductive charging and resonant wireless power while adding more intelligent control, positioning flexibility, and system-level management.

SmartInductive™ Technology is designed for medium-to-high-power applications where efficient, controlled wireless charging or power delivery is required.

SmartInductive™ Technology uses a managed transmitter-and-receiver system to transfer power through magnetic fields. The system is designed to optimize power delivery, monitor performance, and support efficient charging or power transfer across different device types.

Depending on the application, SmartInductive™ systems can support power transfer, data communication, monitoring, and control features. This makes the technology useful for products that need reliable wireless charging with greater intelligence than a basic charging pad.

Traditional inductive charging usually requires close contact or precise placement between the charger and the device. SmartInductive™ Technology is designed to provide more flexibility, more intelligent control, and support for a wider range of power levels and product designs.

Powercast public materials describe SmartInductive™ as supporting applications from lower-power consumer electronics to higher-power industrial and mobility use cases. It is intended for designs that need efficient wireless power along with monitoring, control, and integration support.

SmartInductive™ Technology is well suited for applications that require reliable, efficient wireless power at medium-to-high power levels.

Potential applications include consumer electronics, wearables, headsets, handheld devices, medical sensors, smart-home devices, IoT devices, telecom equipment, robotics, drones, power tools, e-carts, e-bikes, e-scooters, industrial systems, large battery-powered devices, and other products where traditional wired charging or basic inductive charging creates limitations.

Powercast offers wireless power products across multiple technology categories, including RF Power, SmartInductive™ Technology, Magnetic Resonance, and Lifetime Power® solutions.

Publicly available Powercast products and tools include RF transmitters, RF receiver modules, Powerharvester® receivers, RF-to-DC chipsets, antennas, RF field detectors, RFID sensor tags, development kits, evaluation boards, magnetic resonance evaluation kits, and other wireless power demonstration platforms.

Powercast development kits vary by technology and application. RF development kits may include a transmitter, evaluation board, receiver module, antennas, batteries or storage elements, RF field detectors, documentation, and supporting software or tools.

Powercast magnetic resonance evaluation kits may include a generator, power adapter, loop or mat structure, receivers, field probes, and related documentation. Each kit is designed to help engineers evaluate wireless power performance, test use cases, and begin prototyping before moving toward a production design.

Documentation is available for Powerharvester® receivers, RF transmitters, development kits, antennas, RFID sensor tags, evaluation boards, and magnetic resonance systems. For the most current information, refer to the product documentation page or contact Powercast directly.

Yes. Many Powercast products are designed for OEM evaluation, integration, and commercial development. Powercast offers receiver modules, transmitters, chipsets, development kits, and engineering support to help companies move from testing to product integration.

Some products are intended for development or evaluation use, while others are designed for integration into commercial systems. Review the specific product documentation and contact Powercast to confirm the best option for production use.

Yes. Powercast can support customers as they move from evaluation kits and prototypes to production-ready wireless power designs.

Support may include feasibility analysis, proof-of-concept development, transmitter and receiver integration, antenna or coil design, electronics design, firmware or app support, regulatory guidance, testing, mechanical design, and design-for-manufacturing support. The goal is to help customers validate the technology and move toward a scalable product design.

Yes. Powercast technology is designed to operate within applicable safety and regulatory limits. Powercast RF wireless power uses radio waves similar to those produced by common wireless technologies, and RF energy naturally decreases with distance from the transmitter.

Powercast’s RF transmitters are designed to operate in compliance with applicable FCC requirements, including rules on radio frequency emissions and human RF exposure. In the United States, RF devices must meet FCC equipment authorization requirements before they are marketed, and compliance may involve evaluation of transmitter power, operating frequency, antenna configuration, separation distance, and intended use environment.

For example, Powercast RF systems operate in approved frequency bands and are engineered to deliver wireless power while staying within applicable exposure limits. These systems are commonly used for low-power devices such as sensors, tags, displays, and connected endpoints where replacing batteries or running wires may be impractical.

Powercast also offers SmartInductive™ and magnetic resonance wireless power technologies for applications that require different power levels, distances, alignment flexibility, or device configurations. Like RF systems, these technologies must be selected and integrated properly based on the application, environment, and regulatory requirements.

As with any wireless power system, proper installation, product selection, and regulatory compliance are important. Please follow the Powercast product manuals and work with Powercast for guidance on commercial or custom deployments.

Some Powercast products are approved for commercial use, while others are intended for development, evaluation, or prototyping. Approval depends on the specific product, region, application, and installation requirements.

Powercast RF transmitters are publicly listed with United States and Canadian regulatory approvals. Powercast-supported magnetic resonance and SmartInductive™ solutions may also have product- or technology-specific certifications. Customers should review the relevant product documentation and contact Powercast to confirm the approval status for their intended use case.

Powercast RF transmitters operate in the 915 MHz ISM band and are designed to meet applicable United States and Canadian regulatory requirements. Public Powercast documentation references FCC and Canadian approvals for RF transmitter products.

Powercast magnetic resonance materials reference FCC and CE certification for the technology, while SmartInductive™ materials describe the platform as designed for global regulatory requirements. Since approvals vary by product and region, customers should consult the latest product documentation or contact Powercast for application-specific guidance.

International use depends on the product, region, frequency band, regulatory approval, and application. Some Powercast products are approved for use in the United States and Canada, while other technologies may support additional international certifications or require country-specific review.

Before deploying a Powercast product internationally, customers should contact Powercast to confirm the applicable regulatory requirements and product availability for the target region.

Powercast wireless power systems are designed to operate within applicable regulatory limits and to coexist with other wireless technologies when properly installed and used.

As with any RF system, interference depends on frequency, field strength, distance, device sensitivity, antenna design, and the surrounding environment. Powercast RF transmitters operate in the 915 MHz band, which is separate from common Wi-Fi and Bluetooth bands. Contact us for application-specific testing for deployments near sensitive wireless equipment.

Wireless power systems may be subject to different safety, emissions, and regulatory standards depending on the technology, product, country, power level, and application.

For RF systems, applicable requirements may include FCC and Canadian radio-frequency regulations. Other wireless power technologies may involve additional regional or product-specific certifications, such as CE requirements for certain markets. Powercast can help customers understand which standards and approvals may apply to a specific product or deployment.

Yes. Powercast offers custom development and engineering services for companies developing wireless power-enabled products or systems.

Services may include application review, feasibility studies, proof-of-concept development, RF energy harvesting design, antenna or coil design, transmitter and receiver integration, electronics design, firmware or software support, regulatory guidance, prototyping, testing, and manufacturing support.

To evaluate an application, Powercast typically needs information about the device, required power level, desired charging or operating behavior, transfer distance, size constraints, battery requirements, antenna or coil form factor, installation environment, regulatory region, production goals, and target timeline.

The more detail provided, the better Powercast Support can recommend the right wireless power technology and development path.

Yes. Powercast can help compare RF Power, Magnetic Resonance, SmartInductive™ Technology, and other wireless power solutions to determine which option best fits a customer’s design.

RF may be best for low-power, long-range, or battery-free applications. Magnetic resonance may be best for defined power zones with more placement flexibility. SmartInductive™ Technology may be best for controlled, efficient medium-to-high-power charging. The right solution depends on power level, distance, device size, environment, and commercial goals.

More questions? Contact Powercast.

Yes. Powercast can support key wireless power design elements, including antenna design, coil design, receiver integration, transmitter configuration, RF energy harvesting circuitry, and system-level wireless power architecture.

This support can be especially helpful when a standard development kit needs to be adapted for a specific product form factor, enclosure, operating environment, or production design.

More questions? Contact Powercast.

Yes. Powercast can help companies develop proof-of-concept systems and prototypes to evaluate wireless power performance before moving toward production.

Prototype support may include hardware design, receiver and transmitter integration, antenna or coil selection, firmware development, mechanical considerations, testing, and documentation. Powercast development kits and evaluation boards can also be used as starting points for early testing.

More questions? Contact Powercast.

Yes. Powercast technology is designed for integration into OEM products and connected systems. Powercast can support product teams from early evaluation through prototyping, design refinement, regulatory review, and production planning.

For ODMs or manufacturing partners, Powercast can provide technical guidance and engineering support to help integrate wireless power into the final product design.

Powercast products can be purchased through authorized distributors, including Mouser Electronics, Arrow Electronics, and Digi-Key Electronics. Product availability may vary by distributor, region, and part number.

For OEM programs, custom development, or products not listed through distribution, contact Powercast directly.

Yes. Powercast products are available through authorized distributors such as Mouser Electronics, Arrow Electronics, and Digi-Key Electronics.

Authorized distributors are a good option for purchasing available products, development kits, evaluation boards, and select components. For custom projects or production programs, contact Powercast directly.

For stocked parts, pricing and availability can be found through Powercast’s authorized distributors. Distributor pages typically include current inventory, lead times, pricing, and ordering options.

For custom development, OEM opportunities, production programs, or products not listed through distribution, contact Powercast directly.

Our contact page includes options for sales inquiries, technical support, order support, general information, and other requests.

Powercast can help route your inquiry to the right team based on your product, application, and project stage.

Technical support is available through Powercast’s contact form. Customers can submit questions related to product selection, development kits, documentation, system design, or troubleshooting.

Product manuals and documentation may also include support information and product-specific guidance.

Product documentation, datasheets, manuals, user guides, schematics, and software files are available through the Powercast website.

The documentation page includes resources for RF transmitters, Powerharvester® receivers, development kits, antennas, sensor tags, magnetic resonance evaluation kits, and other Powercast products.

Yes. Powercast can help customers select the right product, development kit, or wireless power technology before purchase.

Contact Powercast with details about their application, including power requirements, distance, device size, intended use, and development goals. Powercast can then help recommend an appropriate starting point.

For custom development, OEM integration, partnership opportunities, or application-specific wireless power projects, contact Powercast.

Powercast can review the opportunity, recommend the right technology path, and determine whether a standard product, development kit, custom design, or engineering engagement is the best fit.