Logitech Harmony Ultimate Battery | Remote Control Battery | Ultimate One Logitech - Digital Batteries - Aliexpress
Replacement battery for Logitech Harmony Ultimate Remote 915-000198, Touch, 12091, Logitech 533-000084 - Battery World
Best Buy: Logitech Harmony Ultimate One 15-Device Universal Remote Black 915-000224
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