UltraLast Rechargable Lithium-Ion Replacement Battery for Logitech Harmony 1000 Remote Control URC-LOG1000 - Best Buy
Logitech Harmony 720 Harmony 720 Pro Harmony 720 P Replacement Battery: BatteryClerk.com Remote Control
533-000084 1209 533-000083 Battery for Logitech Harmony Touch / Harmony One / Harmony Ultimate
Synergy Digital Remote Control Battery, Works with Logitech Harmony Ultimate One Remote Control, (Li-Ion, 3.7, 1100) Ultra Hi-Capacity, Compatible with Logitech 915-000198 Battery - Walmart.com