Logitech F12440056 Battery - Replacement for Logitech Universal Remote L-LU18 Battery (1250mAh, 3.7V, Lithium-Ion) Replacement Logitech F12440056 Battery Battery Capacity: 1250mAh, Voltage: 3.7, Type: Lithium-Ion Lifetime Warranty On Sale for a Limited Time! Grade A Quality. High Capacity.