Amazon.com: Cameron Sino This Battery fits Logitech Harmony 950 915-000260 Elite 915-000257 Replacement and Spare and is Compatible with Logitech 533-000128 623158 : Electronics
3.7V 1250mAh Battery for Logitech Harmony 950,Elite,915-000260 Remote Control 8431239265380 | eBay
Logitech Harmony Elite review: I'm finally living the automated smart home dream | Ars Technica
Harmony Remote Batteries
Logitech Harmony Elite review: Touchscreen remote gives you total control, for a steep price - CNET