Hey there
I Ben using this cable
https://www.amazon.com/gp/aw/d/B01AY3XLEY/ref=mp_s_a_1_6?ie=UTF8&qid=1490979090&sr=8-6&pi=AC_SX236_SY340_FMwebp_QL65&keywords=usb+to+12v
With ordenary USB power Banks .. since it will cost me a furtune to buy Sony batteries and since we can't import them to my country for reasons .. so far I had no problems with the setup and it served me long time with phantom power running from zoom h6 and I once tried it on zoom f8 and it worked fine , just make sure that the power bank can provide you with enough amps to run your stuff
