Amazon.com: Replacement Battery for LOGITECH MX-880 MX-890 Harmony One F12440023 NTA2340 One Harmony 900 Harmony 880 Harmony 890 Harmony 720 R-IG7 Harmony 900 Remote : Electronics
Amazon.com: Logitech Harmony One Universal Remote with Color Touch Screen - OLD MODEL (Discontinued by Manufacturer) : 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 : Electronics
Amazon.com: Replacement for Logitech Harmony 900 Battery - Compatible with Logitech Universal Remote R-IG7 Battery (950mAh 3.7V Lithium-Ion) : Electronics
Cameron Sino 950mah Battery R-ig7 For Logitech Harmony 720, 720 Pro, 780, 785, 880,880 Pro, 885, 890, 890 Pro, 895, 900, 900 Pro - Mobile Phone Batteries - AliExpress