GTMax Replacement Battery 3.7V fits Logitech Harmony 720, 850, 880, 885, 890 Pro, H880 and R-IG7 batteries Logitech R-IG7 Standard Battery Brand new generic rechargeable battery Overvoltage, Shortcircuit and Overcurrent protection It can be used as a replacement for Logitech 190304-0000, 190304-2000, F12440023, NTA2340 and R-IG7 batteries. It fits Logitech Harmony 720, 850, 880, 885, 890 Pro, H880 and Harmony One Advanced remotes