Guaranteed for One Full Year - High Capacity 1500 mAh Battery Compatible with Logitech MX Keys Advanced Wireless Illuminated Keyboard, model Y-R0073 Includes Step by Step Video Instructions, Special Electronics Tools, and Long Lasting Battery How-To Video shows you exactly how to open your device with the included electronics opening tools to successfully replace your battery Battery replacement Kit comes with Everything you need to replace your battery plus a One Year Warranty! Replace your Logitech MX Keys Advanced Wireless Illuminated Keyboard Battery also known as MX Keys Keyboard model Y-R0073 or Keep an Extra Battery on hand as a backup. This is a High Capacity 1500 mAh, Lithium Polymer Rechargeable Battery. Works in your Logitech MX Keys Wireless Keyboard. Compatible with Logitech MX Keys YR0073 Keyboard. You get a New Battery, an Instructional Battery Replacement Video, Tools for Battery Installation, and You also get a full One Year Guarantee exclusively when you purchase from us.