I think any ordinary 10,000 to 20,000 MaH USB battery pack, just placed inline between the power adapter and the camera, will give you a few hours of operation. There are threads about it.
Here’s one.
I think any ordinary 10,000 to 20,000 MaH USB battery pack, just placed inline between the power adapter and the camera, will give you a few hours of operation. There are threads about it.
Here’s one.