The 9000 mah lamp is estimated to be able to use for about a year, if you don't want to drive every day, the key is also a long time, it is estimated that it can be used for about three months, without charging.
If it takes an estimated three hours to arrive, it is still very convenient. I hope my answer can help you.
Well, I also like to shoot movies without wireless, the Internet is very good.
The lamp is very power efficient, 9000 mah full charge can last about a week