Keep your Sonos controller running longer with a high-capacity rechargeable replacement battery designed to restore reliable portable power during daily listening, multi-room control, and charging dock use. This Li-Polymer battery is compatible with Sonos Controller 100 / CB100 / CR100 / CP-CR100 / URC-CB100 wireless HiFi system and is built to match the original battery fit and function while delivering stable performance for normal charging and use. Disclaimer: This is not an Original Equipment Manufacturer (OEM) product, HQRP branded product is a replacement. All brand names and logos are registered trademarks of their respective owners. Any use of the brand names or model designations for this product are made solely for purposes of demonstrating compatibility.