Hi Adrian,
I am using a cordless Ryobi Tyre Pump - one with the 18V battery. Purchased as a "skin". It is great for the BSA and soccer balls etc, and weighs b--all. A little slow for car tyres pumping from flat. I did buy a similar-looking ALlaDI brand a few years ago, but didn't open the box for a couple of years, and by then it didn't work and the warranty had expired.
Trouble is getting locked into a particular brand of battery and having to buy the "skins" for all your other cordless tools. I also have drills, an impact driver and cordless angle grinder in the same brand. Not tradesman quality but great value if you don't have to earn a living with them.
I swear that I have no connection WITH the aforesaid company, only AT the tool if I am asking too much of it.
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Col