24 hours of backup

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philo

I just wired up a 12volt dc to 120vac sine wave inverter
and connected five 12v sealed batteries

see pix http://www.plazaearth.com/philo/battery.jpg

I calculate that I have about 24 hours of computer backup.

Of course...that's nuts because I can live without my computer for 24 hours
but now realize I could not live without coffee for more than 8 hours.

My inverter is only 750VA and my coffee maker is 900watts (gasp).

So its back to the drawing board!
 
I just wired up a 12volt dc to 120vac sine wave inverter
and connected five 12v sealed batteries

see pix http://www.plazaearth.com/philo/battery.jpg

I calculate that I have about 24 hours of computer backup.

Of course...that's nuts because I can live without my computer for 24 hours
but now realize I could not live without coffee for more than 8 hours.

My inverter is only 750VA and my coffee maker is 900watts (gasp).

So its back to the drawing board!
Click to expand...

Obviously you need to overclock your UPS... copper watercooled 'sinks or a
prometia, purified copper rewound transformer... or just get an RV
coffeemaker, run it straight from a battery.

What do you have chaging that rack? Whatever it is, is probably worth
more than the UPS.
 
Obviously you need to overclock your UPS... copper watercooled 'sinks or a
prometia, purified copper rewound transformer... or just get an RV
coffeemaker, run it straight from a battery.

What do you have chaging that rack? Whatever it is, is probably worth
more than the UPS.
Click to expand...

Hey maybe i could plug my coffee maker into it
then boil the water by putting a kettle directly on top of the power
transformer!

At any rate...the UPS is built by Best Power Products
and has a built-in hysteresis loop charger. Of course the charger
would take a week to recharge all those batteries...
however I have a 90 amp charger I can hook up if necessary.

again ...all surplus equipment from a former company i worked at
that got bought out.
 
philo said:
I just wired up a 12volt dc to 120vac sine wave inverter
and connected five 12v sealed batteries

see pix http://www.plazaearth.com/philo/battery.jpg

I calculate that I have about 24 hours of computer backup.

Of course...that's nuts because I can live without my computer for 24 hours
but now realize I could not live without coffee for more than 8 hours.

My inverter is only 750VA and my coffee maker is 900watts (gasp).

So its back to the drawing board!
Click to expand...
What you need is one of the Trace 3600VA inverter/charger units sold for RV
usage. They are available for 12V, 24V, and (I believe) 48V battery packs
with 24V being the most common on big bus-type RVs. One of these will easily
run a window-type AC which you see mounted in the fiberglass housings on the
top of so many conversions.
--
John McGaw
[Knoxville, TN, USA]

Return address will not work. Please
reply in group or through my website:
http://johnmcgaw.com
 
Just get yourself a whole house generator converted to natural gas with an
automatic transfer switch and a 5 minute UPS will do and you'll have all the
comforts of home...
 
A "former company"??? What is it now??? A subsidiary??? Or, do you mean a
company you formerly worked at???
 
I just wired up a 12volt dc to 120vac sine wave inverter
and connected five 12v sealed batteries

see pix http://www.plazaearth.com/philo/battery.jpg

I calculate that I have about 24 hours of computer backup.

Of course...that's nuts because I can live without my computer for 24 hours
but now realize I could not live without coffee for more than 8 hours.

My inverter is only 750VA and my coffee maker is 900watts (gasp).

So its back to the drawing board!
Click to expand...

Wouldn't it simply be easier to just chug a cola?

But, if you just have to have coffee, there are single cup coffee
makers and other low wattage coffee makers. Another option is a
battery operated coffee grinder and battery operated coffee maker. I
saw such a beast at a camping show once. So much for "roughing it".
 
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