Has anybody tried getting longer run times from UPS's by plugging
one UPS into another?

Power goess off, the first UPS goes on batteries, and runs everything.
When it quits, the second UPS senses it and goes on batteries, and
runs the computer.

And so indefinitely if you add more UPSs to get more runtime.

It seems it me it would work except possibly :

(1)The UPSs might not like the non-sinewave output of the first UPS, and
(2)I don't know what kind of current they draw if they decide to
recharge their batteries from an outer UPS. (This would suggest it's
wise to unplug the outer UPS when the power goes off so nobody
tries to recharge.)
--
Ron Hardin


On the internet, nobody knows you're a jerk.

On Sat, 10 Mar 2007 10:14:47 GMT, Ron Hardin
wrote:

Has anybody tried getting longer run times from UPS's by plugging
one UPS into another?

Power goess off, the first UPS goes on batteries, and runs everything.
When it quits, the second UPS senses it and goes on batteries, and
runs the computer.

And so indefinitely if you add more UPSs to get more runtime.

It seems it me it would work except possibly :

(1)The UPSs might not like the non-sinewave output of the first UPS, and
(2)I don't know what kind of current they draw if they decide to
recharge their batteries from an outer UPS. (This would suggest it's
wise to unplug the outer UPS when the power goes off so nobody
tries to recharge.)

Why not just take the battery out of the 2nd one and put it in
parallel with the battery in the first one? It would be more
efficient.

David wrote:


Why not just take the battery out of the 2nd one and put it in
parallel with the battery in the first one? It would be more
efficient.

It would be, but there's a catch. When the time comes to recharge the
now much bigger battery, the original charging circuit probably couldn't
handle the extra current. The greater the plate area, the more it starts
looking like a short circuit as far as the circuitry goes.

Most things being now built are made down to a cost instead of up to a
quality standard.



mike

On Sun, 11 Mar 2007 01:27:50 GMT, m II wrote:

David wrote:


Why not just take the battery out of the 2nd one and put it in
parallel with the battery in the first one? It would be more
efficient.

It would be, but there's a catch. When the time comes to recharge the
now much bigger battery, the original charging circuit probably couldn't
handle the extra current. The greater the plate area, the more it starts
looking like a short circuit as far as the circuitry goes.

Most things being now built are made down to a cost instead of up to a
quality standard.



mike

I've done this succesfully. I'm guessing the current is clamped, but
the Triplett kept 3 big-ass batteries charged in a microwave shack.

www.devilfinder.com APC Model 1000

is what I use.My Velocity Micro ProMagix tower computer and NEC
Multisync 22 inch flat screen CRT computer monitor are power hogs.When
the power goes out here due to stormy weather,I shut my computer down
and wait a while.Sure,laptops don't use much power,but I have no
need,nor do I want a laptop computer.
cuhulin

www.devilfinder.com How to hack your APC Model 1000

Port Zoobie!
cuhulin

David wrote:
On Sun, 11 Mar 2007 01:27:50 GMT, m II wrote:

David wrote:

Why not just take the battery out of the 2nd one and put it in
parallel with the battery in the first one? It would be more
efficient.
It would be, but there's a catch. When the time comes to recharge the
now much bigger battery, the original charging circuit probably couldn't
handle the extra current. The greater the plate area, the more it starts
looking like a short circuit as far as the circuitry goes.

Most things being now built are made down to a cost instead of up to a
quality standard.



mike

I've done this succesfully. I'm guessing the current is clamped, but
the Triplett kept 3 big-ass batteries charged in a microwave shack.


You obviously have better taste in the UPS systems available. I tried a
large 12V sealed lead acid battery once and the charge circuit DID melt
down. I was heartbroken. My visions of a two day standby time were crushed.

The small Tripp Lite I have now is acting up. The relay used to transfer
standby power over doesn't work anymore. In all fairness it is an
older 450 VA model, so I should really look around for a new one.

I should also do a complete back up...today...right...today..



mike

Buy a new battery back up device.Tripp Lite,APC,or whichever brand name
you prefer.When the batteries (I think my APC Model 1000 has two
batteries) in my batttery back up get too worn out,I will go to a local
computer store and buy a new one with new fresh batteries in it.I won't
mess around.By the way,I get snail mail APC pamplets in my snail mail
box,whenever APC company sends them out.I guess a www.devilfinder.com
for,APC News Letters might turn something up.
cuhulin

If you want EXTENDED time, wait til the batteries die, remove them and run
wires to a car battery
(can even be outside in a battery box ) DO NOT allow the internal charger
in the UPS to charge the
car battery, put a diode in line to block current going to the car battery
but allowing the battery voltage
to 'flow' to the UPS. A small trickle charger or floating battery charger
can keep the car battery at
full charge. You can use an old heavy extension cord ( like those orange
ones you get to use outside )
to connect the battery and USP. Useful backup time should be anywhere from
6 to 24 hours depending
on the draw ( how much your trying to power) and the quality ( number of
plates ) of the battery.

BE SURE the UPS uses batteries totaling 12 volts, before you even attempt
this. Any damage you cause
on your own equipment is your own fault ...... so if you don't know what
your doing don't even try.
and if you do ..... don't blame me





"Ron Hardin" wrote in message
...
Has anybody tried getting longer run times from UPS's by plugging
one UPS into another?

Power goess off, the first UPS goes on batteries, and runs everything.
When it quits, the second UPS senses it and goes on batteries, and
runs the computer.

And so indefinitely if you add more UPSs to get more runtime.

It seems it me it would work except possibly :

(1)The UPSs might not like the non-sinewave output of the first UPS, and
(2)I don't know what kind of current they draw if they decide to
recharge their batteries from an outer UPS. (This would suggest it's
wise to unplug the outer UPS when the power goes off so nobody
tries to recharge.)
--
Ron Hardin


On the internet, nobody knows you're a jerk.

On Mar 10, 3:14 am, Ron Hardin wrote:
Has anybody tried getting longer run times from UPS's by plugging
one UPS into another?

Power goess off, the first UPS goes on batteries, and runs everything.
When it quits, the second UPS senses it and goes on batteries, and
runs the computer.

And so indefinitely if you add more UPSs to get more runtime.

It seems it me it would work except possibly :

(1)The UPSs might not like the non-sinewave output of the first UPS, and
(2)I don't know what kind of current they draw if they decide to
recharge their batteries from an outer UPS. (This would suggest it's
wise to unplug the outer UPS when the power goes off so nobody
tries to recharge.)
--
Ron Hardin


On the internet, nobody knows you're a jerk.

What's On Your Power Grid :
UPS ? -or- Alternative Power Supply ?

Maybe the Philosophical Question should be . . .

WHY USE AN "UPS" ?

* Do You Use and UPS ?

* Why Do You Use an UPS ?

From 'my prespective' living at the End-of-a-Country-Road.
I use an UPS to Safely Power Down the Computer and
wait, Wait. and WAIT ! until Full Electrical Power is Restored.
When the Lights Go Out and the UPS Beeps and Lights-Up
that It Is "ON" {Working}. My actions are simple :
1 - Close Down the Compluter Applications
2 - Power Down the Computer
3 - Turn Off the UPS
4 - Check the Emergency Lights
5 - Start a Fire in the Wood Stove
6 - Turn on the Radio and Listen to What's Out There ! ! !
- - - When the Local Background Noise is Ever-Oh-So-Low.

BUT =IF= What You Want Is an Alternative Power Supply
that will Run your Computers for Many Hours and up to a
Day. Consider some Deep Cycle Storage Batteries and a
very good Solid State Inverter.

Deep Cycle Storage Batteries
http://www.absak.com/alternative-ene...batteries.html
http://www.windsun.com/Batteries/Battery_FAQ.htm
http://store.solar-electric.com/batt...FSUeGAoddSkxqA

Electrical Power Inverters DC-to-AC
http://www.absak.com/alternative-ene...inverters.html
http://www.tripplite.com/products/inverters/index.cfm
http://www.voltage-converter-transfo...inverters.html

Water Turbine Generators = Micro-Hydro-Power
http://www.absak.com/alternative-ene...dro-power.html
http://www.firemountainsolar.com/microhydro.html
http://www.alternative-energy-news.i...pros-and-cons/
http://www.elements.nb.ca/theme/energy/micro/micro.htm
http://www.mobilehomestead.com/alt/hydro1.htm

Photovoltaic Solar Panels
http://www.absak.com/alternative-ene...lar-power.html
http://www.oksolar.com/panels/
http://www.solarpanelinfo.com/

From Solar Cell - To Solar Panel
http://en.wikipedia.org/wiki/Solar_cell
http://en.wikipedia.org/wiki/Solar_panel

ups, Ups. UPS ! - Then There Are Altenatives ~ RHF