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Old January 5th 05, 05:13 AM
Pops
 
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Default Weird problem with Sangean ATS-909

AT first I thought it had just stopped working with batteries, so I've
been powering it with a wall wart for years now. Well, the other day I
had a brand new pack of Duracell disposable batteries so I thought what
the heck, why not give it a try. So I installed the batteries and what
do you know, it worked just fine. Those lasted a few days, but this
morning the battery meter was getting low so I replaced them with four
freshly charged never-been-used Energizer batteries, 2300 mAh.
Well, I flipped the radio to turn it on, and was somewhat surprised to
see that it was completely dead. I removed the batteries then put them
back in, thinking maybe there was a bad contact somewhere. This didn't
work, so I took the batteries out and put them in the my battery
charger. I expected the charger to run for three, maybe five minutes or
so. But no, it ran for a full charging cycle, about 40 minutes.
Somehow, my radio had completely discharged the batteries in a matter
of seconds.
Anyone have an idea what's going on here?

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Old January 5th 05, 11:56 PM
 
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Pops wrote:
AT first I thought it had just stopped working with batteries, so

I've
been powering it with a wall wart for years now. Well, the other day

I
had a brand new pack of Duracell disposable batteries so I thought

what
the heck, why not give it a try. So I installed the batteries and

what
do you know, it worked just fine. Those lasted a few days, but this
morning the battery meter was getting low so I replaced them with

four
freshly charged never-been-used Energizer batteries, 2300 mAh.
Well, I flipped the radio to turn it on, and was somewhat surprised

to
see that it was completely dead. I removed the batteries then put

them
back in, thinking maybe there was a bad contact somewhere. This

didn't
work, so I took the batteries out and put them in the my battery
charger. I expected the charger to run for three, maybe five minutes

or
so. But no, it ran for a full charging cycle, about 40 minutes.
Somehow, my radio had completely discharged the batteries in a matter
of seconds.
Anyone have an idea what's going on here?


.................................................. .................................................. ....
I use the exact same batteries in my 909 and they work fine. I suspect
that
the new batteries, for some reason, had not been properly charged. It
takes
about 12 hours to fully charge them in my Rayovac charger. The cells
have
an abrupt drop-off at the end of their charge, looking good one minute
and
dead the next. I wonder at a charging cycle of 40 minutes. This would
require
a current of at least 4 amps. My Rayovac charger is rated at 470 ma
per cell.
I would try a longer charge time...........ken.............

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Old January 6th 05, 06:18 AM
Pops
 
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You are right, 40 minutes was incorrect. I should've said 60 minutes.
My charger is a Lenmar Gamma quick charger, and I have no idea what it
is rated per cell.
I will try what you recommended, Ken. Thanks for your help.

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