Taylor 7321 400 Pound Lithium Scale "put round batteries scales" Questions

...round black box held by 3 phillips screws. Remove them, open slowly the top cover and inside reside the battery, pop it up gently with the flat screw driver. 6) Replace the battery, reinstall the 3 ...

...put it back. Then when I stood on the scale I made sure my heels were on the round things on the bottom and when I stood on the scale it told me what I weighed and all the other stuff too. On to the ...