Originally Posted by vick33
I did but i did not found anything closely related to this. If you found or seen anything and can link it i would be realy glad
Not exactly your issue but the best place to post I think as its all about battery issues. There may be something in there that helps.
It is similar to your issue but I realise you had switched off the phone and it still dropped battery to zero, but I would think the above post is related.
If the issue is hardware related I guess the battery could probably 'drop' its charge, or at least report the charge was dropped, even if the phone was off, ie battery goes 'wrong' while phone is off so phone can't power on properly.