On Sun, 18 Nov 2012 22:19:36 -0500, "Ralph Mowery"
wrote:


"Grumpy" wrote in message
...
It is more then just the voltage you need to make sure that polarity is
correct
and that it is DC voltage and not AC some step-down transformers look
identical
to DC adapters/chargers and yes all charger may have slight higher voltage
then actual battery.


To all that you can add that the charger must match the type of battery.
The older nicads are not that critical, but some of the newer types are are.

But the charger in this, as in many other, case(s) us built into the
device and only a "power supply" is external.