On Mon, 30 Jul 2018 22:56:15 +0100, Max Demian
wrote:

On 30/07/2018 13:19, Michael Chare wrote:
I bought some LR44 1.55v batteries on ebay for my Barclays Pin sentry
card reader. They don't work!

I get mine from https://www.amazon.co.uk/dp/B0042LPUIK/ £3.70 for 10
including postage. No problems.

Using my digital multimeter the voltages of the 4 I tried are 0.471 1.30
1.43 1.47

What voltage should I get from a new battery?

!.5V nominal.

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.

Why not take it back to a Barclays Bank branch? I expect they'll replace
the reader.

I thought of that but it offends my 'right to repair' principles.