Polaroid High Capacity Canon NB9L Rechargeable Lithium Replacement Battery (Compatible With: SD4500) Memory Free Formulation Saves Charging Time & Extends Battery Life Environmentally Responsible Design  Allows Hundreds Of Images To Be Shot Before The Battery Needs To Be Recharged Please Note: Some Battery Models May Not Show Remaing Power Replaces:Canon NB9L 3.7V/680MAH