[Lowfer] Question of the day>charging nicads...

Sun, 8 Sep 2002 01:58:24 -0000

Hi Mike.

As not what voltage to charge it at but rather what current to charge them
at.
The answer is .1 times the amp hour capacity for 14 hours.
If the Amp/hour capacity is 1 amp/hour (probably close for a C cell),
then charge it at 100 ma. for 14 hours. You could use a 12 volt wall wart
with
a 60 ohm .6 watt ( 1 watt to be safe) resistor in series.

If it is a rapid charge pack then try .4 times the amp/hour capacity for 3.5
hours.
40% overcharge is used for charging inefficiency.

73, Jim Shaffer, WB9UWA.

----- Original Message -----
From: WE0H <[email protected]>
To: <[email protected]>
Sent: Sunday, September 08, 2002 12:14 AM
Subject: [Lowfer] Question of the day>charging nicads...

> I just bought a garage sale Craftsman cordless drill that doesn't have a
> charger. I have many walwarts around here and will use one for a charger.
> The drill has good cells in it and they are C cells. It is 6v pack. What
> voltage should I use to charge the pack in a fast charge mode???
> Thanks,
> Mike>WE0H
> http://www.we0h.us/lf.html
>
>
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