CS Remote Control Battery for Logitech Harmony One 720 Pro 880 Pro 890 Pro 900 Remote
Amazon.com: FITHOOD Replacement Battery for LOGITECH Harmony 880 Pro Harmony 885 Harmony 885 Remote Harmony 890 Pro Harmony 895 Harmony 900 Pro R-1G7 1903040000 190304200 190304-200 : Electronics
Amazon.com: Synergy Digital Remote Control Battery, Works with Logitech Harmony 900 Pro Remote Control, (Li-Ion, 3.7V, 950 mAh) Ultra High Capacity Battery : Health & Household