Haven't mentioned it in a couple of years but it sneaked up on me today and reminded me. I don't know if it is true of all IR thermos but my Harbor Freight one gradually get less accurate as the battery gets low. It starts measuring higher temps than it should. I have three Rutland stove thermos that are pretty darn accurate. They are the new style that I would bet ten bucks are made by the same people that make Condar's and Woodstocks. Every time the darn battery gets low in that IR thermo I forget and start blaming the mag thermos for being wrong. Then I remember and change the battery and they are back in sync.
Just a heads up. Don't know if all brands react to a low battery the same.
Just a heads up. Don't know if all brands react to a low battery the same.