MikeB wrote:
On Sep 28, 10:52 am, "Bill" wrote:
How about getting rid of all those batteries in various devices in
the home
and connecting the battery connections to one central battery?

That is to run separate wires when wiring a home and these would
carry say 12 volts DC. There would be a central large battery and
battery charger like
the type used in a computer UPS.

Then at each electronic gizmo which needs a battery, use a "battery
eliminator" along with a voltage regulator to supply it with the
correct
voltage. And plug this into a nearby 12 volts DC "outlet".

This could provide battery power to smoke detectors, carbon monoxide
detectors, HVAC thermostat, security system, clocks, digital
thermometers,
computer UPS, phone answering machine, etc.

Then only ONE battery to worry about...

A 9 volt battery eliminator
picture...http://www.wirelessmicrocolorcam.com....php?pID=47&os...

If I am not mistaken, at low (12v) voltages, there is substantial
voltage loss in longer cable runs. Also, many DC devices operate on
other voltages, like 9V, 6V, 19V, 20V, etc. There is also not a
universal DC power outlet, unless you think of the car lighter type
plug, but I've seen other outlets in airplanes, etc.

That means my camera, TV remote controls and many other items would revert
to "wired", each with a wire running to a plug!!!!!!!! No way!!!!!!!!