[feliciano]

Thanks for your reply, hero121.

Actually the troublesome battery is a KGIP 400V bought from China, because, same as you, I thought to buy one from Amazon but it would cost me more the shipping than the battery, so I won't do it unless my main battery dies before the phone.

Thanks again for the reply, and I'll leave the question open just in case somebody knows how to fool the phone to take it.