I just found 8 rechargeable alkaline D cells at the dump. I would like
to try to charge them but am not sure what the correct way to do this
is. Can i follow the same procedure i usually use for nicads that is
10 percent of the rate for about 16 hours? Thanks, Lenny.

wrote:
I just found 8 rechargeable alkaline D cells at the dump. I would like
to try to charge them but am not sure what the correct way to do this
is. Can i follow the same procedure i usually use for nicads that is
10 percent of the rate for about 16 hours? Thanks, Lenny.


That is definitely NOT what you want to do.
You need some real info, but IIRC, they're charged much like lithium.
Constant current up to a terminal voltage. You need to figger out
what that terminal voltage is. 1.6V sticks in my mind, but if I'm wrong
you'll make 'em leak. Look it up.
mike

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wrote:
I just found 8 rechargeable alkaline D cells at the dump. I would like
to try to charge them but am not sure what the correct way to do this
is. Can i follow the same procedure i usually use for nicads that is
10 percent of the rate for about 16 hours? Thanks, Lenny.

Hi...

I wouldn't if I were you...

I don't have any D's, but do have a few AA's and a charger...

Perhaps you can interpolate AA's and D's, so checked for you.
The AA's draw 70 mils until they reach 1.61 volts - then drops
to 20 ma and looks like it wants to stay at 20 forever.

There are a few combo nimh/rechargable alkaline chargers out there,
I know Eveready makes one that takes all sizes, Walmart, about 25
bucks cdn.

Remember before you spend too much though, that you found 'em in a
dump, and there may well be good reason they were there

Take care.

Ken

Lenny:
Even when they were new.... rechargable alkalines were a bust and did
not perform well and did not have adequate discharge/recharge cycles.
Take them back to the dump.
electricitym
--------------

wrote:
I just found 8 rechargeable alkaline D cells at the dump. I would like
to try to charge them but am not sure what the correct way to do this
is. Can i follow the same procedure i usually use for nicads that is
10 percent of the rate for about 16 hours? Thanks, Lenny.

On 29 Oct 2005 18:31:39 -0700 "
wrote:

I just found 8 rechargeable alkaline D cells at the dump. I would like
to try to charge them but am not sure what the correct way to do this
is. Can i follow the same procedure i usually use for nicads that is
10 percent of the rate for about 16 hours? Thanks, Lenny.

Are these the Rayovac rechargables? If so, Rayovac sold a special
charger for them. They are probably available on ebay now for cheap,
because those batteries have now been discontinued.

There's a good chance that the batteries you found are dead. Do you
measure any voltage across them?

Others have reported these cells to be failures, but I've had good
luck with them. I'm sorry they disappeared from the market. I still
have quite a few, and a good charger, so if your cells measure over
..5V I'd be happy to take them off your hands.

-
-----------------------------------------------
Jim Adney
Madison, WI 53711 USA
-----------------------------------------------

The only point about rechargeable alkaline for me are the 1.5v instead
of the 1.2v rechargeables which do not work in some devices. They
also don,t leave in the " dark " without any warning. I never got used
to it. I use portable lighting every night. Watch out for any
chinese type "D" cells wether brand name or not. I took one apart and
it had a "C" size suspended inside. I prefer to do my own D cells out
of C cells by using a white pvc pipe as a sleeve. There is one
situation that you can get the same voltage with the 1.2 volt cells.
I have a 4 cell D size mag that can take five c size in a pvc sleeve
for equal voltage.