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

**URL:** <https://forum.chuwi.com/t/minibook-x-n150-my-fix-for-the-overcharge-whine-issue-since-chuwi-wont-give-us-a-bios-update/56090>\
**Category:** Minibook X N100/N150/5100\
**Created:** [August 4, 2026, 6:25am UTC](https://forum.chuwi.com/t/minibook-x-n150-my-fix-for-the-overcharge-whine-issue-since-chuwi-wont-give-us-a-bios-update/56090 "2026-08-04T06:25:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![airfong33](https://avatars.discourse-cdn.com/v4/letter/a/ecd19e/32.png) [@airfong33](https://forum.chuwi.com/u/airfong33)\
**Post date:** [August 4, 2026, 6:25am UTC](https://forum.chuwi.com/t/minibook-x-n150-my-fix-for-the-overcharge-whine-issue-since-chuwi-wont-give-us-a-bios-update/56090/1 "2026-08-04T06:25:24Z")

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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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**Author:** ![jaap](https://avatars.discourse-cdn.com/v4/letter/j/a3d4f5/32.png) [@jaap](https://forum.chuwi.com/u/jaap)\
**Post date:** [August 6, 2026, 1:25pm UTC](https://forum.chuwi.com/t/minibook-x-n150-my-fix-for-the-overcharge-whine-issue-since-chuwi-wont-give-us-a-bios-update/56090/2 "2026-08-06T13:25:33Z")

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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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**Author:** ![bentPencil](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.chuwi.com/bentpencil/32/11444_2.png) [@bentPencil](https://forum.chuwi.com/u/bentPencil)\
**Post date:** [August 8, 2026, 1:29pm UTC](https://forum.chuwi.com/t/minibook-x-n150-my-fix-for-the-overcharge-whine-issue-since-chuwi-wont-give-us-a-bios-update/56090/3 "2026-08-08T13:29:03Z")

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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](https://linrunner.de/tlp/settings/bc-vendors.html)]

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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**Author:** ![jaap](https://avatars.discourse-cdn.com/v4/letter/j/a3d4f5/32.png) [@jaap](https://forum.chuwi.com/u/jaap)\
**Post date:** [August 11, 2026, 5:18pm UTC](https://forum.chuwi.com/t/minibook-x-n150-my-fix-for-the-overcharge-whine-issue-since-chuwi-wont-give-us-a-bios-update/56090/4 "2026-08-11T17:18:21Z")

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

Cheers, Jaap