Amazon.com: Synergy Digital Remote Control Battery, Compatible with Logitech Harmony One Remote Control, (Li-Ion, 3.7V, 950 mAh) Ultra High Capacity Battery : Electronics
Logitech Harmony One Advanced Remote Control Battery Li-Ion 3.7V (950 mAh) Battery - Replacement For R-IG7 and Monster MCC
Harmony Ultimate One Battery - Logitech Harmony Ultimate One Battery - Spare Module Type Logitech Harmony Ultimate One Replacement Lithium Ion (Li-Ion) Remote Control Battery – CutRateBatteries.com
Harmony Remote Batteries
BATTERY LOGITECH HARMONY ONE,700,800,900 serie
Logitech Harmony One Remote Battery Replacement - YouTube
Swollen Battery in your Logitech Harmony One?
2x Pack - Logitech Harmony One Battery - Replacement for Logitech Universal Remote R-IG7 Battery (950mAh, 3.7V, Lithium-Ion) - Walmart.com
Remote Control Battery R-IG7,F12440023,K43D,M36B,M41B,190304-200 for Logitech Harmony One, 720,780,785,880, 885,890,895,900, Pro
Amazon.com: AvimaBasics Harmony One Battery Replacement Part Compatible with Logitech Harmony One, 720, 850, 880, 885, 890 Pro, H880 Advanced Universal Remotes - Parts: 190304-0000 (950mAh 3.7V Li-ion) : Electronics
Harmony One Battery Repair : 6 Steps - Instructables