A compressor makes your life a whole lot easier, since you no longer need to inflate things by hand. There's no cord to restrict you, just make sure you've charged the battery.
From OnBuy
Makita MP100DZ 12V Max Li-Ion CXT Inflator - Batteries and Charger Not Included
Ecprof
MP100DZ - MP100DZ-8.3 bar-1.3 kg