WattUp Active Energy Harvesting

The WattUp Active Energy Harvesting Developer Kit

This energy harvesting kit developer combines Energous’ radio frequency (RF) solution with e-peas’ power management IC technology to support at-a-distance wireless charging applications for smart buildings, industrial IoT sensors, retail electronic displays and more.

The WattUp Active Energy Harvesting transmitter incorporates the DA14682, DA4100, EN3921 and EN3913M devices. The DA4100 is a highly integrated system-on-chip (SoC) Wireless Power Transfer (WPT) transmitter IC, the EN3913M is a highly efficient GaN power amplifier (PA) controlled by the EN3921, while the DA14682 is a Bluetooth low energy 5.0 SoC with enhanced security and integrated FLASH memory. A lower power option is available with the DA3210 CMOS power amplifier.

On the receiver side, there are 3 input paths available to choose from based on use case, including discrete diode and DA2210 RF-to-DC implementations, which connect to the AEM30940 ambient energy manager chip and the DA14531, a size-optimized, ultra-low power Bluetooth low energy system-on-chip ideal for IoT devices.


  • IoT Sensors
  • Building Security
  • Occupancy Sensors/Management
  • Industrial Automation
  • Asset Tracking
  • Electronic Shelf Labels

Wireless charging transmitter supporting groundbreaking at-a-distance charging

  • Small size using optimized WattUp technology
  • 1W or 5.5W of conducted power using a single WattUp PA
  • Charging Zone of +5 meters
  • Optimized antenna for performance design fitted to product mechanical requirements

Simple Implementation

  • Flexible designs that can fit into multiple transmitter and receiver designs
  • Universal transmitter supports variety of receiver devices charging at the same time “one to many”
  • Single PA/Antenna non-beamforming

User Friendly Experience

  • Over-the-air distance charging interoperability

Scalable Architecture

  • Multiple devices can charge simultaneously
  • Multiple Tx topology to increase area coverage

Retail Application Example

Developer Kit


  • e-peas AEM30940 RF energy harvesting IC solution with Supercap or rechargeable Lithium battery support

  • Low Voltage Operation from 50mV to 5V

  • Cold Start from 380mV input voltage

  • DA14531-based BLE sensor hub with example sensors (Ambient light and Temperature/humidity)

  • Optional E-ink ultra-low-power Display

  • On-board or external BLE antenna

  • External Harvesting antenna

  • USB micro and JTAG Debug ports

What’s Included

  • Reference Design Transmitter Hardware (1)

  • Reference Design Receiver Hardware (1)

  • Mobile App to monitor and control TX/RX

  • TX/RX Schematics and Layout files

  • TX/RX Antenna Design files

  • TX/RX Mechanical files

For more information on purchasing a developer kit, please use the form below:

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Partner products based on the WattUp PowerHub technology must secure applicable regulatory certifications in the markets where they will be sold.