Ed wrote:
wrote in message
...
On Thu, 2 Jul 2009 20:55:58 -0400, "Stormin Mormon"
wrote:

Nicad and nickel metal are 1.2 volts per cell. For those,
you'd need 100 to make 120 volts.
Well, goody, goody for you. There are also cells that are 2.2 volts
per cell. I didn't specify any particular technology. Just that no
existing technology would allow for a "very, very, small" 120 volt
battery to power a drill.

If you choose cells that produce 1.2 volts each, then you will also
end up with something bigger than "very, very, small".


IIRC, back when the first RCA portable radios hit the market in the 1950's,
they had a 90V battery in them. I'm sure it is possible to make a 120V
battery, but may not be practical.



Tube type radios had "A" and "B" batteries. The "A" battery
was for the tube filaments and the "B" was for the plates.
You can still find B batteries but they're rare. There was
also a "C" battery in some of the radios.

http://en.wikipedia.org/wiki/B_battery_(vacuum_tubes)

Years ago I owned a Graflex Strobe 4 flash unit and it
required a pair of 225 volt batteries. I could melt
people's eyes with that darn thing.

TDD