Minibook x N150: My fix for the overcharge & whine issue (since Chuwi won't give us a BIOS update)

Laptops Minibook X N100/N150/5100
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Was literally about to dump my 2-month-old N150 and buy the U300, but canceled when I saw the U300 has the exact same issues: overheating, loud fan, and no charge limit. It all comes back to the locked BIOS.

Since Chuwi’s support is notoriously bad for troubleshooting or getting replacement parts (like swollen batteries), I gave up waiting on them.

Just sharing my workaround here—and for the record, I’m not an affiliate or sponsored, just a frustrated user trying to keep my laptop alive.

I started using a Chargie (the laptop version). I plug my normal 65W PD charger into it, and then plug that into the N150’s full-featured USB-C port. I set it to stop charging at 80%, and it physically cuts the power flow.

Why it helps:

  • Saves the battery from constantly sitting at 100% and expanding.

  • Completely kills that high-pitched coil whine that happens when the battery sits fully charged.

  • Less charging stress means slightly less heat, which keeps the fan a bit quieter.

It sucks having to buy a 3rd party dongle to do what a basic BIOS setting should handle, but until Chuwi actually listens to us, it’s the best way to bypass their lack of software support.

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Hi,

Great tip! How does it work? The laptop cannot communicate its current charge, can it?

cheers, Jaap

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A BIOS update alone cannot add battery-friendly charge limits if the laptop lacks the specific hardware charging IC (integrated circuit) or embedded controller (EC) firmware logic designed to cut off power at a set threshold, like 80%. Software needs dedicated physical pathways to control the battery. [Source]

Chargie works because of the created path to the charging circuitry from the desktop app via bluetooth. Not the smoothest method, but better than nothing.

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Thanks, that’s a clever solution. I’ll consider buying a dongle.

Cheers, Jaap