Not so great: Outside control, Multi-touch, and Battery Life - The Logitech Harmony Elite Experience: Ultimate Control
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Amazon.com: Empire Remote Control Battery, Works with Logitech HARMONY TOUCH Remote Control, (li-ion, 3.7V, 1100 mAh) Ultra High Capacity Battery : Health & Household
Logitech Harmony Is Dead. Here's How the Smart Remote Lost Its Way | WIRED
Harmony Remote Batteries
TTVXO 1100mAh for Logitech Harmony Touch Battery Remote Control 533 000083 Battery|Smart Accessories| - AliExpress
Empire Remote Control Battery, Works with Logitech HARMONY TOUCH Remote Control, (li-ion, 3.7V, 1100 mAh) Ultra High Capacity Battery : Health & Household - Amazon.com