I bought this one about 4 months ago. I am on a diet so I know what I should weigh and it seems highly accurate. It hasn't needed batteries yet.http://www.amazon.com/gp/aw/d/B00G8N0AS0
Non-mobile: http://www.amazon.com/dp/B00G8N0AS0
That's why I'm here, I don't judge you. PM /u/xl0 if I'm causing any trouble. WUT?