JONKUU Power Banks 30000mAh Portable Charger Fast Charging External Battery Pack is now my new goto battery pack.

I use these a lot with my Gopro for keeping this going longer on time-lapse and good for long projects that require more than 30 - 40 mins of recording.

This type of power bank is also good for my Rode Caster Pro when I record somewhere with no access to a power socket, a time where I recorded in a middle of a field and also from a local park.