The Nikon EN-EL9 Rechargeable Li-ion Battery is a high-quality product designed specifically for Nikon D40 and D40x digital cameras. This battery is compatible with Nikon cameras and offers long-lasting power for extended shooting sessions. With a Li-Ion chemical composition, this battery is reliable and efficient, providing consistent performance for your photography needs. Made in China, this battery ensures quality and compatibility with your Nikon camera, making it a convenient and essential accessory for any photographer.