Original Audiovox BTR-8400 / BTR8400 Battery for Audiovox CDM-8400, 8400, CDM-8410, 8410, CDM-8450, 8450, and Sprint VI600 / VI-600 - Standard Capacity 900 mAh Lithium Battery designed for Audiovox 8400, 8410, 8450 & VI600 Cell Phones