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Remote Control Battery R-IG7,F12440023,K43D,M36B,M41B,190304-200 for Logitech Harmony One, 720,780,785,880, 885,890,895,900, Pro
Amazon.com: Synergy Digital Remote Control Battery, Compatible with Logitech Harmony One Remote Control, (Li-Ion, 3.7V, 950 mAh) Ultra High Capacity Battery : Electronics