Replacement 2-Pack Nikon EN-EL9 / EN-EL9a for Li-Ion Batteries used with Nikon D5000 , D3000 , D60 , D40X , D40 DSLR Cameras Accessory Power Brand, Non-OEM Equivalent; Replaces Part : Nikon ENEL9 Specifications: Voltage 7.4V (volts) ; Capacity 1100 MAH Chemistry: Lithium Ion Rechargeable - No Memory Effect ; Utilizes BSP Technology for Surge & Overload Protection, Thermal-Cut-Off Free Extended 3 Year Manufacturer's Warranty ; European Quality with Silicon Valley Technology; Customer Satisfaction Guaranteed Package Includes: Scratch-Guard Protector Bag