Portable Power stations?

Hi there,

In the next couple of weeks, I will be heading on a camping trip and want to setup a black light for moths and beetles. I already have a 20w BLB but unsure on how to proceed when it comes to power supply. I would like to have it running for at least 5 hours. Would a car battery be something viable? How would I even connect that to the lamp?

I would like something somewhat affordable if possible.

Also, any tips/suggestions would be greatly appreciated as this will be my first time!

There are a fair amount of existing threads about mothing setups you might want to check through:
and there may be others. We can reopen one of those if it is what you are looking for.