None of my battery (built-in and removable) are charging and both to 0%

Dear all,
I have a Thinkpad T440s (Windows 7 /Ubuntu dual boot) for 1 year.
Everything went fine at the beginning with the battery. I then had several problems with the removable battery charging only to 63%. Now the problem is even more bothering because both batteries are at 0% but none of them is able to reload... So my computer only works with A/C...
I have the Lenovo power manager (from the beginning) telling me that battery 1 (built-in) is 0% and is charging (but it doesn't in fact..) and battery 2 is 0% and without activity.
I have tried thousands of tricks like reinstalling the power manager app, resetting the built-in battery (in the BIOS), play with the threshold or alimentation modes. I don't know what to do at the moment......
Please bring me some help, I'm desperate!
Thanks in advance
Kind regards,
David

Hi David,
Have you performed the above troubleshooting which was provided earlier?
If yes and the issue still persist, then it could be related to the hardware issue. You have to visit nearby Lenovo authorized service center for further assistance.
Best regards,
Hemanth Kumar
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