Replacement battery fits 27 Logitech compatible models. Specifications: 950 mAh, 3.7V, Li-ion. Compatible with: Harman Kardon TC30, Harmony 880 Remote, Harmony 885 Remote, Harmony 890 Remote, Harmony 720 Remote, Harmony One and 21 more compatible models. Replaces: Logitech R-IG7, Logitech 190304-200, Logitech F12440023, Logitech K43D, Logitech M36B, Logitech M41B and 15 more. Logitech replaceme…