I do not know if that battery is original, at least it's not exactly the same as that provided (yet the same reference) when I bought my Wave 3, since this I have to block it with a sheet of paper on one side if you hear it move when I move the phone;) I have given time between my phone to a person who uses a lot less than me, she did not encounter particular problem of autonomy and rarely refill. This battery does the job well (-1 star for the battery which is 1 / 10th mm narrower which makes noise, it's not very serious).