Battery or AC: 40WHrs, 2S3P, 6-cell Li-ion
Detailed description：
I am using my 3rd original battery in 4 years for this high segment laptop and as it seems there is a general production problem concerning the battery of this model. First battery survived less than 1 year. Second one which official Asus service changed in the content of guarantee did not work in healthy condition more than 11-12 months either. And the 3rd one for which I paid started to show the same failure symptoms in its 3rd week.
I accept that the life of a battery is shortened with time and I do not have any problem with this. I am OK even if it lasts 1 / 1.5 hour after 1 year although its time span is around 7-8 hours when it's new. But the problem of this model's battery is that the laptop shuts down without informing when the battery level comes to 11-12%. After a while the laptop starts to shut down at 20%s and then even at 30%s.
The "the battery health charging" app is not working in UX390U. I tried to get advice from Asus Turkey Technical Support Team about how to adapt this app to my laptop or any other ways to keep my battery healthy but all I got was "this app is not available for your laptop" answer and some other generic answers about the battery usage.
Dear ASUS Global Support Team, one thing is clear: The battery you include in your premium laptop model UX390U is defective, has a general production problem or, more optimistically, very low quality. Such continuous problem on such high segment laptop is not acceptable.
I expect a REAL SOLUTION:
1.tell me a way to adjust the battery indicator to show the real battery level. In this way, may be I will see 2-3% level in 1.5 hour (I have no claim for this) but my laptop will not shut down without my intention.
or
2.send me a new laptop with a properly working battery!
