Exell Wireless Mouse Battery 3.7V 600mAh Li-Ion Fits Logitech G7 Laser Cordless Mouse, M-RBQ124, MX Air Replaces Logitech 190310-1000, 190310-1001, 831409, 831410, L-LL11, NTA2319 Voltage: 3.7, Amperage: 600mAh, Chemistry: Li-Ion Length: 1.640, Width: 1.460, Height: 0.290 Exell Battery Remote / Car Alarm / Lantern