Halfords digital tyre pressure gauge
 

Hi

Has anyone replaced the battery in one of these. I thought they were supposed to have a lifetime battery in them but mine has flashed up a flashing l in the display which i assume is for low battery and have managed to replace it but it now just reads -0.0 when used!
Di i need to somehow reset/recalibrate it ? And if so how.
I knew i should of kept the instructions!

TIA

PeteS

Crap, threw mine away, will get a decent one soon. NOT from Haulfrauds...

DunxC

Compared mine to the calibrated snap-on air-ones at work and it was always accurate.

PeteS