This is not accurate. Don't trust it. I have read a user complaining about this issue. When he got that warning, he immediately headed off to a near Samsung center and replaced the battery. He ran this diagnostic again to check the battery status he got the same warning again just after the replacement of his battery with newer one. I checked once and it showed me the same warning that It needs to be replaced. Though, It was just 6 or 7months from purchasing. Don't worry everything is fine.
