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ransley[_2_] ransley[_2_] is offline
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Default only Ni-Mh batteries, a better man than I

On Nov 30, 11:28*am, "A. Baum" wrote:
On Tue, 30 Nov 2010 16:22:14 +0000, Woody wrote:
"john gurney" wrote in message
...


Just bought a Duracell battery charger yesterday for rechargeable AA
and AAA batteries. (model no CEF24UK)


The first disappointment was that it only charges *two* AA or two AAA
at a time. (usually chargers of this size charge four batteries at a
time).


When I got home it specifically says in the instructions only to charge
Ni-mh batteries, and not any others.


So I rang the free phone number and said I've got a lot of the older
Ni-Cd batteries (like you have...right?) and would it do any damage to
the batteries or the charger to charge them?


Could I get a straight answer, could I hell.


I was very persistant, but she would not answer in a straight way. When
I asked if I could be transferred to a technical department, she said,
"we have 'all' the information".


All you staring blankly out of the window, waiting for something to
happen...
It's a free phone number...... 0800716434


The question I kept repeating was, will any damage be done to either
the charger or to the older ni-cd batteries, if charged up in this
charger?


If you can get a straight answer from this women you're a better man
than I.


The answer is no, it will not hurt the Ni-Cds provided the charge
current is within the range of the cells.


Uh, Nicads where charged mostly by time, NmMh by current sensing. You
would want to monitor a nicad very closely in a NmMh charger if it didn't
complain and abort the charge in the first place. My Duracell charger
will not charge Nicad. Not even attempt to charge them. *- Hide quoted text -

- Show quoted text -


As I understand it NiMh peak at a higher voltage than Nicad, voltage
drop is the best way to monitor a cells charge, ive done it for my RC
car packs. He can do the "feel if its warm test", when they start to
get warm they are 100% charged. Better is he could simple slip volt
meter leads in the charger and monitor if it does cut off at voltage
peak or continue charging and cook the batteries. It may or may not be
fine. My Nimh charger does Nicads on Volts peak cutoff. A good charger
should charge anything.