Interview with Victor Chen, CEO of SoonWell, about their latest product - special handle with large build in battery - Soonwell PH70. It can be especially useful for not so large, but power hungry cameras like ones made by BlackMagic. Using such handle you can make your cinema rig much smaller, but still have very long shooting time. It has 8V, 12V output, 14.4V D-tap outputs and also 5V USB output.
source link: https://www.youtube.com/watch?v=JdzUViH0VEY