How to Replace Battery in Harmony Remote Remote Touch / Ultimate / Elite - YouTube
Harmony Remote Batteries
Amazon.com: Synergy Digital Remote Control Battery,Compatible with Logitech Harmony Touch Remote Control, (li-ion, 3.7V, 1100 mAh) Ultra High Capacity Battery : Health & Household
Logitech Harmony Ultimate One Remote Review - Gadget Review
Amazon.com: Logitech Li-ion Battery for Harmony Remote ONE 880 890 720 : Electronics