The Canon BP-955 Li-Ion Battery Pack is compatible with the following (not a complete list):
Canon C500 (EF)
Canon C300 (PL)
Canon C300 (EF) with AF Upgrade
Canon C100 (EF) with AF Upgrade
Canon C100 Mark II (EF)
It is not compatible with the C300 Mark II (EF). It features 4 LED lights that allow you to view battery life and will communicate remaining life to the camera.
There is no manual for this product.