Logitech 533-000074 Li-ion Rechargeable Battery Sanyo 553436 720mAh for Mouse MX1000 Mice 981-000277 UE9000 Headphones G930 533-000074 F540 981-000257 Logitech 3.7V 720mAh 2.66Wh Li-ion Rechargeable battery Part Number : 533-000074 Model: Sanyo 553436 Compatible Models: Logitech 981-000257 ; 981-000277 ; F540 ; G930 Logitech MX1000 mouse battery Ultimate Ears 9000 Headphones battery