Powering Atomos Ninja V and EOS R5 at the same time from a V lock battery
Moman 99 Pro: https://amzn.to/3OmM2Xl
FXLion Nano One: https://amzn.to/459zoCh, there are higher capacity Nano Two and Nano Three.
D-tap cable with locking barrel https://amzn.to/3DLeEod
If you like the v lock option, and it powers so many things you might just need some rails from Smallrig or someone like that. I used this to clamp on to tripod, https://amzn.to/45xKXmz