I'm cannibalising a fairly simple battery-powered machine. It has a
motor, a switch, and three 1.2V rechargable cells, wired in series. As
it stands, the motor spins much too fast - I want it to spin at about
1/3 of the speed. So presumably I could remove two of the batteries -
would that work?
I don't even know whether they're NiCad or NiMH - they don't say.
Could I wire them in parallel to make them run longer, or would that be
the kind of thing which makes them catch fire?
The current charger puts out 5.3VDC at 140mA. I'm surprised it's being
used for a 3.6V battery, but then I don't know much about rechargable
batteries. I presume that connecting it up to a single cell, or even
two, instead of the three it currently services, would not be a good
idea. Is that right?
Finally, how do these chargers work? I believe this thing was originally
intended to be left plugged in all the time to recharge. How does the
charger know when to stop charging the batteries? Could I substitute a
lower-voltage AC adaptor for this one, or is the charger a bit more
complicated than an AC adaptor I might find off-the-shelf?
Thanks for any help.
Apple Juice Ltd
Chapter Arts Centre
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