Cool Pix 4800 Battery (Nikon). Digital Camera Battery 7.4v 750m Ah. High quality lithium -ion rechargeable battery. All Duracell digital camera & camcorder batteries are built to the highest possible standards & have a 3 year limited warranty. Each battery is guaranteed ‘no memory effect’. Duracell's products are designed to give you maximum power. Whatever your power needs, you can take more photos with Duracell.