Logitech Squeezebox Duet Controller Battery - Replacement Battery for Logitech L-LU18 and F12440056 Replacement Logitech Squeezebox Duet Controller Battery Replacement Battery for Logitech Harmony 1000, Harmony 1100, Harmony 1100i, L-LU18, F12440056, K398, 190582-0003 Premium Quality, Lifetime Warranty, CE Approved and Safety Assured Output Volts: 3.7V, Capacity: 1250mAh On Sale for a Limited Time!