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If you’re prepared to spend that much, you could probably get a Makita/DeWalt/Ryobi etc and you’ll then be set up with a battery and charger
For the money, you get the lowest capacity Ryobi with one battery, and it flows about 13% of what the mains powered Hyundai does while being at least 10dB louder. I'd say the use cases are so different that to suggest a cordless inflator in place of a workshop compressor indicates either that you think @theflatboy is an idiot or that you are 🙂
It’ll be plenty for bike tyres. If it’s literally only going to be for that though, had you considered the myriad of Li Ion powered tyre pumps out there? If you’re prepared to spend that much, you could probably get a Makita/DeWalt/Ryobi etc and you’ll then be set up with a battery and charger which is cross-compatible with various tools like drills, saws, impact wrenches, shop vac etc etc should you ever want anything like that in the future. May be worth thinking about. It’ll be way smaller than a compressor and won’t need to be plugged in.