Harmony One Battery Repair : 6 Steps - Instructables
Harmony Remote Batteries
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
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
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
How to remove swollen Logitech Harmony One battery | Pim's Blog