Have the Smallrig adapter, but I don't like the mounting options.

Will be getting a v-mount adapter with a plate for two NPF 970s.

Neewer NP-F Battery to V-Mount Battery Converter Adapter for LED Light, Field Monitor, 5D2 Rigs, Alternative Battery Option for Sony V-Mount Gear, Fits for 2-Pack Sony NP-F970, NP-F770,NP-F570 Battery https://www.amazon.com/dp/B075R8DMKF/ref=cm_sw_r_cp_apa_i_m-1eDbVKV8JJ1

CAMVATE V Lock Mounting Plate Power Supply Splitter with 15mm Rod Clamp https://www.amazon.com/dp/B071VD2SFV/ref=cm_sw_r_cp_apa_i_W-1eDb08ANVSB

This will power my whole rig - camera, monitor, nucleus nano, and I have the option to use V-mount batteries in the future if I decide to get some.