Logitech 1250mAh 3.7V Li-Ion Rechargeable Battery For Harmony 915 1000 1100 L-LU18 LU18 Logitech 1250mAh 3.7V Li-Ion Rechargeable Battery For remote control Harmony 915 1000 1100 L-LU18 LU18 Rechargeable genuine logitech battery 12 month warranty