The rolux rl-cagii battery holder is designed to power your canon eos c300 mark ii. You need to connect a v-mount battery (not included) to the rl-cagii to create a reliable solution. V-mount batteries are known for their long battery life, which allows you to get the most out of your rl-cagii. The v-mount batteries are secure in place, but they can be disassembled with one push on the button. Usage rl-cagii you mount the rl-cagii with a battery plate adapter on the rods your canon eos c300 mark ii. This adapter can be found under the optional accessories. Preparations have already been made for both the rl-cagii and the battery plate adapter for quick and easy mounting. Only one cable needs to be connected and you are ready to use. The rl-cagii is suitable for all common v-mount batteries. On the side of the rl-cagii is a d-tap connection, to power your favorite accessories (e.g. an led lamp).