Conair thinner scale th402 always display 150lbs after replacing the battery? how do it reset it?

Question edited for clarity.

This TH207 seems to be an unknown model.

They all have a battery compartment apart from one exception. There is a Taylor Scale that supposedly has a lifetime battery, and is non replaceable.

More model scales just have a small round disc with a screw and take a small CR2032 button battery. Attach a picture of the back of the scale for me.

https://www.google.com/search?q=Conair+Thinner+Scale+TH207.+How+to+change+the+battery

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Perhaps this will be of assistance: https://www.manualslib.com/manual/755963/Conair-Thinner.html

https://tipsfolder.com/i-change-battery-conair-thinner-scale-7693e0883a124d849cc7526b2ca92e79/

https://bindscience.com/how-do-i-change-the-battery-in-my-conair-thinner-scale/

https://www.conairscales.com/catalog.php?product_id=428&ib=en

Is the lithium battery placed the correct way?

The same way you would re set anything else.You pick it up and then set it down somewhere else. You have now re set your scale.

I have a 10 year old Thinner bathroom scales also. Apparently the manufacturer designed it to make battery replacement hard so you'd buy a new scales. To replace the battery, if your unit is similar to mine, turn it over, remove all the screws and separate the top and bottom. You'll see the glass window that shows the weight. It is held in place by four tabs that are slightly twisted. Straighten them, lift the glass assembly clear without straining the wires, and turn it over to reveal the round black battery case. It is secured by three small screws and clear epoxy. Remove the epoxy with a knife blade, remove the screws, and separate the two halves of the case on one side being careful not to separate the other side where there is a metal connection piece. Using the knife tip, remove the CR2032 battery and replace it with a new one (available at Radio Shack or similar stores). Reassemble in reverse order; no need to replace epoxy. My scales worked fine after that.

I have a "Thinner" scale. You have to put a little weight on it to activate, it will show 8888. Don't step on, wait a few seconds and it will change to 0000, then step on.

mcdevito75 here, Generally if the unit slows down or just isn"t as efficient as it was, then it could be time to change the battery.

Conair TH402 displayes incorrect weight

change battery

This link allows you to ask questions and request a users manual....I hope this helps. http://www.conair-store.com/cc_contactus.asp