Power bank for Gopro

Kido250

I’ve got a GoPro Hero 9 and would like to use it whilst cycling and motor biking. My problem is though keeping it charged. I have a couple of power banks but they won’t charge the battery whilst I’m out. I’m often on the bike for 2 or more hours without a break and the battery dies a lot quicker and my power banks don’t charge it whilst It’s recording. Any ideas or suggestions please? 

[Deleted User]

You can't charge whilst recording but you can take as many spare batteries as you need and swap when exhausted.