The Canon BP-A30 Battery Pack for EOS C300 MK II is a rechargeable lithium ion battery that mounts on the Canon C300 Mark II camera. The battery provides 45W hours of power and is compatible with Canon's Intelligent Battery System. Pressing the button on its back displays the approximate charge left in the battery without needing to attach it to the camera. Its removable contact cover helps to prevent short circuit charges when not in use while ensuring contacts remain free from dust and dirt.