Samsung WB850 battery problem

I got my new Samsung WB850F from Amazon a couple of weeks ago.

I have not taken many photos yet due to the terrible weather in the UK at the moment. I have however noticed that the battery goes flat very quickly even with the camera turned off. As a test, I fully charged the camera battery and have checked it once a day without taking photos. In just four days it has gone down to showing one bar left of the three bar indicator.

My WB650 model that has served me well over the last year or so does not have this problem.

Worrying.

Anyone else getting this problem ?
Peewit