Checking NiMH cells?

Some NiMH cells in blood pressure testers seemed to fail, I measured
voltage. That seemed to be OK. After recharging, I still got error messages.
Although there are warnings not to short the cells, I did test them using a
ammeter. Some cell ser delivering about 3A. What I take to be the bad ones,
delivered less than 1A.
I would appreciate any knowledge imparted to me.
Bill
--
Fermez le Bush--less than 18 months to go.
Reply to
Salmon Egg
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I have a relatively cheap blood pressure tester that takes 2 AAA cells. I buy these cells "by the case" for less than $.25 each.
When I was "into" those little portable radios I purchased quite a few NiMH cells. They cost several $dollars each and it seemed that only after a few charging cycles would fail the test the charger put on them.
If I had to guess why your blood pressure tester isn't happy, it might be the voltage is just a little too low. I think the rechargables are 1.2 volts. The "cabon/zink" cells, of course, put out 1.5 volts and the alka cells put out something in the middle.
Reply to
John Gilmer
I should have said that the device uses 4 AA cells.
Bill
Reply to
Salmon Egg

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