Replacement for the Following Battery Model/Part Numbers: 72200, 78904586. Intended for/Compatible with the Following Welch-Allyn Ophthalmoscope/Otoscope Handle Models: 11720, 11730, 18100, 20000, 21700, 71000, 71003, 71010, 71015, 71020, 71022, 71050, 71051, 71054, 71055, 71110, 71150, 71610, 71670, 72200, 72207, 74710, 97210. 3.6V(3.5V) 750mAh 2.70Wh Ni-CD Rechargeable Battery Pack. 1 Year Replacement Warranty. MPF Products® is a Registered Trademark.