Frequently Asked Questions

1 How does WattUp® work?

In simple terms, a WattUp® transmitter sends contained energy via radio waves to paired devices containing complementary WattUp® receivers. The receivers convert those radio waves into DC power, which in turn charges the receiver’s battery.

2 Is it safe?


The RF energy exposure with our technology is essentially zero when devices are not being charged. When devices are being charged, RF exposure is always less, and usually substantially less than FDA/FCC regulated limits.

3 Is it efficient?

WattUp® Mid Field and Far Field Transmitters sense and communicate to authorized receiver devices via Bluetooth Low Energy (BLE) and only send power when needed, and requested by those devices. WattUp® is software controlled, intelligently determining which devices receive power, when, and in what priority. If there are no authorized devices within range, the WattUp® transmitter becomes idle, and no power is wasted.

4 Is WattUp® Always Sending Power?


WattUp® transmitters only send power when receiver devices are present and needing a charge. 

5 What are the target product segments for WattUp®?

Initially, WattUp® is targeted at electronic devices which typically require 10W and below:

  • Smartphones, Phablets, eReaders and Small Tablets
  • Wearable Fitness Trackers
  • Smartwatches, and other Wearable Computing Devices
  • Computer Accessories, such as Wireless Keyboards and Mice
  • Remote Controls
  • Home Device Networks
  • Home, Office and Commercial Wireless Sensors
  • Gaming Controllers
  • LED Lighting
  • Battery-Powered Children’s Toys

6 What is the WattUp® ecosystem enablement strategy?

Energous Corporation is taking a multifaceted approach to building a worldwide infrastructure for WattUp® wire-free charging.

Energous is partnering with Original Design Manufacturers (ODMs), Original Equipment Makers (OEMs) and Integrated Device Manufacturers (IDMs) that currently design and manufacture existing wireless products (e.g. Wi-Fi).

We are engaging key infrastructure providers and operators that have historically monetized new wireless technologies as they deliver them to the market (e.g. paid Wi-Fi zones).

We are working with multiple receiver product design and manufacturing companies in the target segments listed above, and standards bodies- such as AirFuel- to roll out the adoption of compatible consumer electronic products.

We are actively seeking target destination partners for wire-free power to proliferate commercial location demand (e.g. coffee shops, restaurants, high traffic metro areas, malls, and airports).

7 What is Energous Corporation's business model?

Energous Corporation is a fabless semiconductor,  technology and intellectual property licensing company which will leverage strategic partnerships to expand the WattUp® ecosystem.

A partnership with, and license from, Energous® may include proprietary chip technology and design libraries, scalable transmitter and receiver reference designs, software stacks from device firmware to cloud-based enterprise management tools, high volume technology transfer readiness documentation, custom design and applications engineering support, as well as patent, knowhow and comprehensive intellectual property coverage.

Through membership in the AirFuel Alliance, partners will be able to test and obtain interoperability certification to the uncoupled specification.

8 How do I work with Energous® on compliant reference designs?

By contacting Energous, companies can engage in partnerships, either through Joint Development Agreements (JDAs) or other forms of agreements and licensing contracts. Partners will receive the support of our broad team of business professionals, and product design and deployment staff. Our team, with over 1000 man-years in technology development and commercialization, has been deploying and debugging WattUp® technology from end-to-end (silicon to system, hardware to software).  Reference designs are not only developed to take advantage of the optimization gained from this depth of experience, but are also created with economic and regulatory issues front and center. In short, your success is our success, and we will go the extra mile to ensure it!

9 What is the 10cm distance noted on the NF-130 Charger?

10 cm is the recommended and standard test distance for “typical desktop applications”, per FCC guidelines for RF devices.