Manjushri

OP must have noticed it on tons of far-right web pages.

Portable compressors can’t really handle the volume: they take forever and overheat.

Do you specifically mean battery powered compressors? I have a portable one that plugs into the lighter socket and works fine. I end up using it periodically when the weather turns cold and the pressure in the tires naturally drops. I’ve never tried putting more than a five or six pounds of pressure in though.

A 10,000 mAh power bank with attachments to jump start your car or charge your phone. Also has a built in flashlight. It’s come in handy on a few occasions now.

I understand that there are new ones now that also have a built in air compressor for pumping up your car tires, but I don’t know how good they are.