Digital Nc High Capacity 'Intelligent' Lithium Ion Battery Sony Cybershot DSC-HX1-5 Year Replacement Warranty High Capacity (Non-OEM) Battery (1500 Mah), 5 Year Warranty Chemistry: Lithium-Ion (No memory loss) Integrated microchip for communications with camera and charger, prevents overcharging, & lengthens battery life Includes 5 Year Replacement Warranty