Is There An Ultimate High-Capacity Cam Battery?

[Max Field]

Was looking into upgrading my battery loadout if I ever buy another Arri camera and looked at this 600 dollar juggernaut:
https://www.bhphotovideo.com/c/product/1474107-REG/fxlion_fx_hp300a_15a_300w_high_power.html

What would be the drawbacks of an off-brand battery like this?

Is there a better battery with high capacity that I should be looking at instead?

Or maybe a high capacity gold-mount battery that all the industry veterans usually flock to?

Thanks for any input!

Edited November 13, 2024 by Max Field
sent too early by accident