HP Slatebook x2; Tablet wil not charge, 5sec a battery is shown. After 1 year and 1 month.

Question

Hi,
I have the HP slatebook x2 10-h0000ed, just 1 year and 1 month.  (bought and used in the Netherlands) 
So 1y1m means, no official warrenty anymore, but a warrenty should not be the life expectancy...
My problem, actually none, until this morning, the X2 was totally switched off and could not startup.  
After poweron it was just was showing a battery at 10%, the shutted down?
It seem to me that it has drained itself from almost all power (99%?), and then self shutted down. 
Small history of the event;
Yesterday evening I left it at 2x 100% (base+tablet), and disconnected the charger.
The charger led was white (full&ready). So this time I did not leave the charger in the unit, to safe some energy...
While at 2x 100% charged, I powered the unit completely down. Afterwhich I closed the the tablet+base.
Now, this morning the unit did not wake. Normally press the powerbutton for 3-5 seconds or so.
The only thing I saw was a white battery with 10% red level on the black background.
Then after 5 second or so it switched back off by itself.
No fix until so far.
This I tried;
 - Disconnected the tablet, and charged only the base. After 1-2 hours? the orange charger led went white. (full)
 - Placed the tablet back onto the base, power on. no succes, same battery screen, and back auto off in 5 seconds.
 - Disconnected the tablet, and tried to charge only the tablet. After 1-2 hour no succes.
   The whole time the charger led was off. Not orange. Not white. Only off. And not charged anyting.
 - While disconnected to the base but connected to the charger, I pressed the power. 
   The same thing happened, but with a twist..
   Same battery screen, and back auto off in 5 seconds. 
   But when the screen + battery image was on, the charger was orange also. But only for thet 5 seconds moment.
   This is a mini charging moment ??? And gave me the following idea...
 - So I pressed and pressed and pressed the power button for atleast 1 hour uninterrupted, with many pop-ups of 
   the battery screen. And many temporarily orange charger leds.
   With my hope that many times a little charge would revive the poor I-dont-wanne-charge condition. 
   But no ,also no success.
   Power on is still the same battery screen, and back auto off in 5 seconds. 
- Placed the none-charged tablet back onto the base.
   Power on is still the same battery screen, and back auto off in 5 seconds. 
So I read and browsed;
 - Many complaints about HP and the battery of this kind of tablet. 
    The charging sequence problem are in short; Dead on arrival, but most of the time after 
    changing the tablet at the store it was ok.
    So some leaving the factory unchargeable.
 - But mine tablet was now 1y1m still up and running ok !
    Until the voltage dropped below voltage-X.
 - And lower then voltage-X means, by product-hardware, of by prodict-software, (I think)
   that the charging-process is blocked and/or shutdown because the voltage is too low.
 - In my opinion, when the voltage is too low, it should charge the battery, and not stop and exit and shutdown.
Future actions;
 - Now it is saterday, so I have to wait until monday, until I can contact HP (at the Netherlands).
 - I will discribe this problem and how this happens.
 - I hope that HP is accommodatin and compliant to me with this problem.
 - As I say in the beginning, a warranty should not be life expectancy of a product.
 - The tablet nor adapter or wires and connectors were mistreated, dropped, bend, scratched, etc. Just normal everyday use.    :-)
 - I hope HP will give more warrenty then the 1year !
Do you have any ideas ?
I sort of out now.....
regards,
Manuel.

Answer 1

Status update;     good..  &  and bad..
the good..
The tablet (tablet+keyboard, not adapter) was transported to the HP-centre, for repairs.
From the Netherland to Poland, after a about 1 week it was returned.
The transport service arranged by Hp and Ups, was without any problem.
As requested to not-factory-default or erase otherwise, it was returned OK. All accounts where still fully present.
Repaired; As stated on the repair form in Dutch 'voeding bord vervangen'. Meaning 'power bord replaced'.
So I think something like the charge-pcb (inside the tablet?) was replaced.
Tested;   Individual and all joined (tabl+keyb) charging.
While monitoring the power usage with a battery-monitoring-app.
  (the 'battery monitor widget', and the system-default widget.  always the same results. !!)
Results;
 - The normal usage is OK.
 - But charging has some issues, see the bad, below.
Also, the 'UpdateEC' popup re-appeared after the repairs. 
The message;
  UpdateEC
  New EC Firmware found!!
  Would you lik to update EC firmware?
  (I do not know anymore the the version values from and to..)
the bad..
Maybe a new problem, starting from day 1 (after receiving it back).
This is still some preliminairy info, because I am still monitoring this.
The possible new problem;   Charging the keyboard-battery !
A strange 'thing' seems to be going on with the keyboard battery.
 - When drained to 1%, it charges in 20 minutes to 100% ??  While the table battery charges in 2 hours (120 mins).
 - When fully at 100%, is drains much faster then the tablet battery.
 - When at 50-90%, or somewhere in the middle, it 'jumps' to 1% ??
I have screenshots of this odd charge/discharge effect.
  (screenshots of the 'battery monitor widget'. not the system-default widget, but always  same results.)
I will keep monitoring this, and when the problem is a bit more clear, I will probably make a new support-request.
Keep you posted!
regards,
Manuel.