Description: Cordless mouse battery Original Brand: Logitech Chemistry: Lithium Ion Voltage: 3.7V Nominal Capacity: 2000mAh Width: 34mm Height: 10mm Length/Breadth/Depth: 50mm Comments Battery compatible with Logitech MX1000 cordless mouse. Replaces L-LB2 battery. Manufacturered using superior quality made in Japan Sanyo lithium ion cell offering up to 20% longer run time and much longer total service life. This battery is a compatible alternative to that of the original brand