I bought some LR44 1.55v batteries on ebay for my Barclays Pin sentry card reader. They don't work!
Using my digital multimeter the voltages of the 4 I tried are 0.471 1.30
1.43 1.47What voltage should I get from a new battery?
The card reader was showing "Low Battery". Fortunately after I rubbed the old batteries with a tissue the card reader started to work so I have been able to make my online bank payment.