Question:What kind of charging cable does this use?
Answer: Just use a normal type-c port charging cable
Question:Is it able to charge via an external battery pack, while at its full lumens?
Question:Can I use this on a canon camera?
Answer:There are two standard cold shoe mounts, you can use it on any camera with a hot shoe mount.
Question:How much does each unit weigh in grams?
Answer: 94 grams per light