Battery suddenly drops to 0 %

[abvcccccccccccc]

hey there , my battery normally (gradually) drops , but then after a point it drop completely to 0 % and shuts down

[Garp_senchau]

@abvcccccccccccc, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

That sudden battery drop is definitely not normal. 😕

First, perform a power drain:

Turn off the computer.

Disconnect the AC adapter.

Remove any discs from the disc drive.

Remove memory cards from the card reader slot.

Disconnect all nonessential peripheral devices, such as printers, scanners, external hard drives, and USB flash drives.

With the AC adapter unplugged, press and hold the power button for approximately 15 seconds.

Reconnect the AC adapter, and then turn on the computer.

Next, try a battery calibration to reset the way your laptop reads battery levels:

1. Charge your laptop to 100% and let it stay plugged in for at least 30 minutes after reaching full charge.
2. Unplug the charger and use your laptop normally until it completely shuts down.
3. Leave it off for about an hour, then plug it back in and charge it to 100% without turning it on.
4. Turn it back on and check if the issue improves.

Also, you may perform a hardware test. HP PCs - Testing for hardware failures | HP® Support

Reference: 

HP Notebook PCs and Chromebooks - Improving battery performance | HP® Support

HP Notebook PCs - The battery doesn't charge or power the laptop | HP® Support

I hope these steps help resolve the issue

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,