750mAh High Capacity Extended L-LY11 F12440097 553-000018 Battery Replacement for Logitech MX Revolution Laser Mouse M-RBQ124 Compatible with the following Logitech models: Logitech G930 Gaming Headset (981-000257), Logitech MX Revolution Laser Mouse (older generation). This L-LY11 Battery is for the older MX Revolution Mouse. The newer generation of the MX Revolution Mouse uses a L-LL11 battery. Please verify which battery your mouse needs before purchase to ensure that you are purchasing the correct battery. Replaces: Logitech L-LY11, F12440097, 200810, CS-LOY11RC, CP-MXL11 & 533-000018 Batteries. High Capacity 3.7V 750mAh (OEM Battery is 600mAh) Lithium-ion Battery. 1 Year Replacement Warranty. MPF Products is a Registered Trademark.