Anyone using a small portable power station for game nights and outages?

[joshuawhite]

I'm in Boston and our building loses power fairly often in winter storms. I keep a small battery box charged for phones and a lamp, and I've been thinking about getting a slightly bigger one so I can run a laptop and maybe a monitor through an evening outage instead of stopping mid-game. The thing I keep going back and forth on is capacity versus weight. Something around 300Wh sounds like enough for a laptop and router for a few hours, but I don't want to haul a brick up three floors every time. I also wonder how these hold up after a couple of years of sitting mostly idle, since I'd only really use it a few times a year. If you've got a setup like this, what capacity did you settle on, and did the shelf life turn out to be an issue? Appreciate any firsthand thoughts.