I don't need the battery anymore, I changed my phone with a Xiaomi. I'm very sad to know that Asus did not replied to me with a simple "sorry, we haven't battery anymore".
I could have appreciated it a lot.
Now i own only 1 Asus device: my tablet. I sincerily hope Asus will not disappoint me againt when I will need some infos about my tablet, in the future