This guy has it figured out.
On the topic of power storage
this is an interesting idea and I might build one of these. you dont necessarily need to put it in a portable enclosure. Certainly expensive but will deliver a lot of power and last a decent amount of time.
jehu is someone I forgot about. hes got some other options out there for batteries and info. Worth spending some time on his channel.
These batteries are neat too. looks like an optimum 6S configuration.
lily is p cool grill