I quickly unpacked it. It definitely does not have a battery compartment, only a mains plug with transformer. The output power to the camera is 5V/1A. If you are technically proficient, you can also build a battery compartment and attach it to the camera.

Unfortunately still in original packaging, as not required by Corona operation - cannot answer the question

For me, it works with a powerbank 20000 per battery for 24 hours.

👍🏼👍🏼Top - Thanks for your great and quick feedback!