Just thought of something.
Portable "motocycle" tire pumps tend to fail or take forever to work. But we have a really big battery on our bikes which means we can supply power for a more powerful pump.
I have a strong RV airpump in my SUV which uses 12vdc from the battery directly but it weighs a bit.
What are good air pumps which are portable, might run on 12vdc or "120vdc" but will do a good job without the need for CO2 but wont weigh a ton for long trips?
Instead of carrying a "motorcycle" pump, just carry a normal car one, but take it out of its plastic case so its tiny. Ive done that for years.
also, pretty much any bike can run any pump that plugs into the cig lighter port. They cant pull too much amperage from there or they would pop the cars fuse... so just get a cheap car pump, take it out of its case, and cut the cig-lighter plug off to fit your battery tender plug (or whatever plug you want, since you dont need a battery tender on a zero)