Batteries, wallwarts,voltages and currents Re: New Classic Finds and etc. (Long)

From: Joe R. <rigdonj_at_cfl.rr.com>
Date: Mon Jan 26 21:32:53 2004

At 01:11 AM 1/27/04 +0000, you wrote:
>On Jan 26, 17:28, Joe R. wrote:
>
>> I was referring to open circuit
>> voltage which is how batteries are usually measured since "under load
>> voltage" is obviously dependent on the load.
>
>Actually, to nitpick, dry cells at least are properly measured under a
>light load, because as they age, they develop higher internal
>resistance. Measuring them with a high impedance voltmeter will
>suggest they're good when they're not.

   Many batteries also develope a "surface charge" and it has the same
effect. (My nitpick) It just goes to show that there's a lot more to
batteries than most people think.

    Joe
Received on Mon Jan 26 2004 - 21:32:53 GMT