product opened for inspection.The product is a universal replacement battery compatible with various Lenovo IdeaPad laptop models such as L21C3PF0, L21M3PF0, L21M3PF1, L21D3PF0, and L21L3PF0. This high-quality battery is designed to provide reliable power for your laptop, ensuring extended usage and optimal performance. Perfect for those in need of a replacement battery for their Lenovo IdeaPad model, this product offers a convenient and efficient solution to keep your device powered up for extended periods of time.