mzeitlin3348
See it and Believe
I have an old Accutire pressure gauge. It uses two sets of batteries - one 3V lithum coin cell internal not meant to be replaced and two replaceable button cells which provide backlighting.
Recently, the 3V lithium battery finally died out (displays a "L" in the LCD window). I decided to replace it out of curiosity with a new identical CR2032 coin cell. The gauge lit up again - "L" is gone, but the unit only shows "1.0 psi" reading. It no longer works like before.
Just curious if anyone else has played with these and ran into this. Maybe it's just a reset or re-calibration method that's needed. Not worth much time as they are cheap to replace, just curious how it works and why after the internal battery died, the unit no longer works after replacing that battery with a new one.
Recently, the 3V lithium battery finally died out (displays a "L" in the LCD window). I decided to replace it out of curiosity with a new identical CR2032 coin cell. The gauge lit up again - "L" is gone, but the unit only shows "1.0 psi" reading. It no longer works like before.
Just curious if anyone else has played with these and ran into this. Maybe it's just a reset or re-calibration method that's needed. Not worth much time as they are cheap to replace, just curious how it works and why after the internal battery died, the unit no longer works after replacing that battery with a new one.