like people have said, a power bank won't supply enough power...you'll need a power station
now, I go out camping a lot in a small 5th wheel. It doesn't have an inverter, just a converter so when boon-docking, only 12V power. I take my drone(s) and I have a pretty powerful ASUS laptop that I use for editing. So I needed a smallish power station. I got this one from Jackery:
https://www.amazon.com/dp/B082TMBYR6?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2&th=1
now, it's a small power station. It only has 293 watt hours of capacity. Running the laptop for an hour or so drains 90-120 of those watt hours and if the laptop is chugging along in a conversion/edit, it can drain a little more. So, that's the downside. The upside is the unit is small, only weighs 7 pounds, and can be recharged by a type c USB line (besides grid power)
but those are some of the considerations you have to gauge: power consumption, recharge process and time, size, weight. It doesn't do much good to drain your PS down if you need to get back to grid power in order to recharge. Many of these units can only be recharged with house current. Some can be with a 12V system like a car or RV; and some can also be recharged with a solar panel
you also need to be cautious about the actual power supply. If you're running electronics you want to be very sure the 110v supply is true sine wave. I've seen some cheaper power stations I'd be very skeptical are true sine wave power and that can fry your laptop
for instance here's another Jackery PS:
Jackery Explorer
it has a capacity of 1,070 watt hours. But it weighs 24 pounds and can only be recharged with 100-120V grid power...unless you want to also buy a solar panel and carry it along too
people have mentioned the DJI power stations. They are reported to be really good.
here's a DJI model
1024 watt hours. Now, they claim it can be recharged using a car battery. But if you try and recharge it more than a top-off, I'd bet it will drain your battery and you'll have to call triple A. It also weighs 33 pounds. That's not a weight I'd want to cart around