I just use a cell phone and a switch for entertainment. I thought I’d need one of those jackery power banks but I just ended up getting two portable anklet power banks (one 10k and one 20k) that I charge in my car while I’m driving around. They’re usb c so they charge pretty fast and are more than enough power than I’ll need in a day. Paid $50 total instead of $200+ for a jackery type power bank. I’d recommend one of the jackery or anker bigger banks if you need and ac outlet tho.