Replacement for the Following Battery Model/Part Numbers: LI11B001F. Intended for/Compatible with the Following Harman Kardon Bluetooth Speaker Models: Onyx studio 1, Onyx Studio 2 (PLEASE NOTE: THIS REPLACEMENT BATTERY IS NOT COMPATIBLE WITH THE ONYX STUDIO 3 OR ONYX STUDIO 4 SPEAKER). 3.7V 2600mAh 9.62Wh Lithium-ion Rechargeable Battery Pack. Includes Free Installation Tools. 1 Year Replacement Warranty. MPF Products is a Registered Trademark. 2600mAh LI11B001F Battery Replacement Compatible with Harman Kardon Onyx Studio 1, Onyx Studio 2 Wireless Bluetooth Speaker.