Amazon.com: Replacement Battery for Harmony 950, 915-000260, Elite, 915-000257, fits Part Number 533-000128, 623158, Remote Control Cameron Sino CS-LOH950RC 3.7V Li-Polymer 1300mAh/4.81Wh : Electronics
Logitech Harmony Elite Review: A Remote for Home Entertainment/Smart-home Gurus
Logitech Harmony Is Dead. Here's How the Smart Remote Lost Its Way | WIRED