I have and recommend the TalentCell as well. I've used it with my slider, a small light, even my heated hoodie.

The one con is that the USB is 'dirty'. It has a voltage regulator that introduces noise. As long as you stick to the DC ports you'll be fine.

I also recommend a simple V-mount battery with a D-tap to hirose cable. These are a great value with solid reviews: https://www.amazon.com/6600mAh-Compatible-Camcorder-Broadcast-Replacement/dp/B07TQM6T22 And the USB port is clean.

This YouTuber has a lot of rig videos: https://www.youtube.com/watch?v=v1i-DC5JkME

If you're really going all day, I would do a version that snaps into a shoulder rig: https://youtu.be/5eUeD7f1xPI

This is the best value for V-mounts if you're flying: https://www.amazon.com/6600mAh-Compatible-Camcorder-Broadcast-Replacement/dp/B07TQM6T22 Get a bigger size if you're not flying.

These micro batteries are awesome if you want to pack small and have lots of power options, but they're 3x the cost per Wh: https://www.amazon.com/SmallRig-Battery-VB99-Camcorder-Filmmaker/dp/B0B6Z9K42P There are other micro batteries for less, but have fewer features.