Any one have a health-o-meter scale?

Hello =)
I have a health-o-meter scale and the last time I weighed my self the L0 message popped up and and then the scale died.
I bought Heavy duty 9volt batteries and put them in the scale but they didn't work..
Do I need to get a different type of 9volt battery? like lithium or Akaline? I just don't want to have to keep spending so much money on batteries that won't work..