Power consumption is mission critical for IoT networks to ensure that they can be deployed ‘everywhere’ and accessed ‘any time’ from ‘anywhere’ at a low cost. FreevoltTM is an innovative, patented and patent-pending wireless charging technology that uses wireless radio frequency (RF) harvesting of existing wireless and broadcast transmissions to trickle charge the sensor devices when sufficient RF density is available, and inductive power transfer (IPT) using a dedicated transmitter.

Customer Success Story

"Working closely with Drayson Technologies will allow us to integrate Freevolt's innovative wireless charging features into our products while keeping energy use to the minimum. Furthermore, as we continue to drive miniaturisation, Freevolt's flexibility is enabling us to explore the use of the technology in different platforms"


RF Harvesting Applications


Smart Homes & Buildings have multiple sensors and devices to help us better control our home environment. FreevoltTM can remove the worry of battery swaps and cable charging for many of these sensors making the smart home far simpler to manage. Building sensors, powered by FreevoltTM can be built into the very fabric of new offices or homes enabling architects and designers to monitor and measure everything from air flows, temperatures, stress factors and vibration, bringing a new level of architectural pre- and post-construction monitoring to building design and control.


Beacons will change the way we engage with our favourite brands, improve communication flow and automate information delivery. And they can all be powered by FreevoltTM, extending the lifetime between battery changes. This will enable beacons to be deployed in locations where it is hazardous, impractical, environmentally insensitive or too expensive to change batteries


Wearable tech has gone mainstream and some of the hottest low energy wearable devices on the planet are now ones on your wrists, arms, faces and part of your clothes. Many of these devices can be powered by FreevoltTM to extend the battery life, improving user experience and customer retention.

RF Harvesting Benefits

Low cost

Combines with Sensyne’s machine-learning to reduce the cost of installation and operation of IoT networks and deliver cost effective big data collection and analysis.


Single-band, multi-band, flexible or rigid solutions.

Wide range

Technology capable of harvesting from 400 MHz to 6 GHz. Harvests RF energy down to 150 nW/cm2 of power density.

Scalable and modular

Scalable antenna, rectifier, and harvester configurations.

Existing sources

Does not require modification of already deployed sources.

Mass Recharge

Ability to recharge multiple devices simultaneously.

Inductive Power Transfer Applications

Industrial Devices

Machinery and devices in the industrial sector are often challenged by the constraints of using high power cables and the associated safety considerations. Freevolt IPT Technology tackles this by enabling manufacturers, systems integrators, and OEMs to operate contactless rotational machinery, systems, and sensors.


Freevolt IPT has been developed for wearables that operate in the most stringent environments and diverse applications. Having a flexible technology that can be easily integrated into the device or garment and is capable of ensuring a seamless user experience is not only an advantage but a key USP.


Operating in adverse environments where corrosion and safety issues are proactively controlled is key element in the Aerospace industry. With the capability to power system blocks and full systems, Freevolt IPT tackles these challenges ensuring safety as well as system reliability.

Inductive Power Transfer Benefits

Broad Power

Transfer mW’s up to kW’s


Wide range of operating frequencies from 100s of kHz to MHz


Flexible form factors that can integrate into a wide variety of applications including hermetically sealed devices.

Reliable & Efficient

Operating at high link & end-to-end efficiencies

Light weight

Air cored coils developed using state of the art manufacturing techniques to ensure a lightweight system

High Tolerance

Ability to operate through variable vertical offsets, separation distances and angular misalignments.