Amazon.com: Youejoeq (2-Pack) r-ig7 Battery Replacement for logitech Harmony one 900 850 880 885 890 Pro H880,fit Part no R-IG7 190304-0000 f12440023 : Electronics
UltraLast Rechargable Lithium-Ion Replacement Battery for Logitech Harmony 1000 Remote Control URC-LOG1000 - Best Buy
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
Amazon.com: Replacement for Logitech Harmony One Advanced Battery - Compatible with Logitech Universal Remote R-IG7 Battery (950mAh 3.7V Lithium-Ion) : Electronics
Harmony Remote Batteries
Logitech Harmony One Swollen Battery Removal - YouTube
ARB-R-IG7 Battery for Logitech Harmony One 720 785 H880 H880Pro H890 H890Pro | eBay
Logitech Harmony One Swollen Battery Removal - YouTube