Based on this product's specifications, here are some alternatives and similar models
Battery Green Cell MS04 for MSI A6400 CR640 CX640
Summary description:
The Green Cell MS04 battery is designed for MSI laptops including A6400, CR640, and CX640. It offers reliable performance, long-lasting power, and is made with high-quality materials to ensure safety and durability. This battery is an ideal replacement for your old or worn-out battery, providing optimal compatibility and efficiency for your device.