See also:
Michelin USB rechargeable mini inflator

September 2025. After less than 2 years the pump’s battery would
not hold its charge. I suppose that was my 20 quid’s worth.

Robbo put me on to me this unbranded 4000 mAh USB rechargeable tyre pump. You’ll find the usual clones of clones of clones on ebay from around for even less now. Tbh, I don’t know exctly what 4000 mAh means in the grand scheme of things – battery capacity probably, not power, but it worked well for me.

Mine came with a bunch of unneeded nozzles and a Samsung-type USB-C? recharge cable. You turn it on, set the pressure you want (which stays in the memory) and press the middle button. Off it goes, pumping up a G310GS rear tyre from zero to 27psi in about 5 minutes without getting hot and while being dead easy to read. There’s a torch, too. It weighs 420g. A handpump fyi, weights 100g.
Remember, with pumps ignore some notional ‘150psi!’ figure which they might manage in a small-volume pushbike tyre. It is the much less often quoted flow rate or cfm that counts. This one is probably a lot less than < 1cfm and all pumps will slow down as they pass 1 bar or so. It’s how fast they can keep pushing to a typical 25-30 psi (2 bar) that counts.

I also used it daily to top-up the slow-leaking rear tubeless tyre on my CRF. Yes, a bike-battery 12-volt powered compressor like my 2002 Best Rest Cycle Pump (left; 760g) is about the same size, weight and power, but for quick, cable-free top-ups it’s one less thing to wire-up or plug in. It vibrates less and makes less noise than my old Cycle Pump too, and recharges off mains in a couple of hours. I’d guess it would take at least 30 minutes of pumping to flatten the battery. I never got close, and of course you could do it on the move via a bike’s USB plug or off a power bank.

The elephant in the pump house is of course the durability of unbranded Chinese gadgets, but that applies to 12-volt pumps too, if not everything. I tumbled one time in front of some impressed village boys and rolled on my back which cracked the pump’s housing but it kept going fine. On a long trip I’d pack a manual back-up pushbike pump (search ‘Crank Bros’ and go from there). But for what I do in Morocco I retired the Best Rest and relied on this handy USB pump in the tank bag until it dies on me.
That day has come: two years in it’s not holding its charge. But the 20 investment has paid back. Next one will be a bit more compact