The RAVPOWER SAVIOR SERIES Model RP-PB057 is a set of two replacement Li-ion battery packs for Nikon cameras. Specifically designed for the Nikon EN-EL15 battery pack, these 7-volt/2100mAh batteries are compatible with various Nikon models and series. Made with high-quality materials and manufactured in China, these batteries offer reliable power for extended photography sessions without the need for frequent recharging. Perfect for photographers who require a dependable and long-lasting power source for their Nikon cameras.