Has anyone used a power inverter to use for a desktop pc?

X-Gamers

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CPU: Intel Xeon E5-2643 V3 3.4GHz 6-Core OEM/Tray Processor ($500.00)
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Video Card: Asus GeForce GTX 980 Ti 6GB Video Card (3-Way SLI) ($699.99 @ Micro Center)
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Power Supply: Corsair AX1500i 1500W 80+ Titanium Certified Fully-Modular ATX Power Supply ($392.36 @ B&H)
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Also I will set up a 65" 4k tv, ps4, Onkyo surround sound, and other small appliances.
 

USAFRet

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Using an inverter or whatever does not fix your wall outlet output.
It is not a magic bullet. In fact, it is far worse, due to simple inefficiencies in the system.
 

X-Gamers

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I want to see if I can take 4 dc batteries with 400amh each to hook up to a power inverter to use for my pc needs/small appliances without going through the trouble of running a dedicated circuit.
 
Hi

Get a qood quality ups or talk to dealer who speciases in ups
How long do You need to run system for between charges ?

Idealy you want a inverter which produces full sine wave AC
To avoide the psu going up in smoke
.
Regards
Mike Barnes
 

X-Gamers

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Is there a ups that can handle 2000w? and I would say 8 hours but since I will be working on this pc maybe 12 hours max and 12 hours resting. Yea I read into that because of the square like wave forms are not close to the sine wave.
 

USAFRet

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Running that PC for "8 hours* will require a few thousand dollars worth of UPS, and weigh several hundred pounds.
 

USAFRet

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What calculations have you done to show that this would be possible?
Which specific batteries are you talking about?
 

X-Gamers

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X-Gamers

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So to bother you with this. I wasn't paying attention the other equation I did and thought I didn't have enough watts coming from the outlet.
 

USAFRet

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Using an inverter or whatever does not fix your wall outlet output.
It is not a magic bullet. In fact, it is far worse, due to simple inefficiencies in the system.
 

jimmysmitty

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Lets start looking at this logically. I have a APC SmartUPS 1500 rack mounted. It has 8 12v 5aH (500maH) batteries in series in it. With just one server, without the 3 980Tiz but just integrated video, that will give me maybe 30-40 minutes of run time. Each of these UPSes weigh about 63.1 pounds. You can attach a batter pack to it which will add an additional 40-60 minutes to that single server but also weighs an additional 120 pounds.

So for maybe 1.5-2 hours on a single dual CPU server you have 1.5-2 hours of run time on a UPS.

Add in the 3 980Tis and that would probably drop to 15-20 minutes.

It is not possible unless you have a ton of space for the batteries because 4 6v 4aH batteries will not do it.
 

X-Gamers

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Okay and thank you for your reply.
 

X-Gamers

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I wasn't trying to fix the outlet output but do an off grid rig.
 
Wait a minute please...
OP is talking about 4 of the great big 400AH batteries used in off-grid systems. Two parallel pairs in series will amount to 800AH of +12V power for the inverter.
Twelve hundred watts at 120V is 10A; which becomes 100A at only 12V. A straight conversion suggests an eight hour run time, BUT there's this "thing" called a Peukert Curve to consider, which essentially says the faster you drain a battery, the less of its rated capacity you'll get out of it. Just my guess, but I'd think a discharge rate like that might last six hours, max.

Edit: That was also before losses in conversion (no inverter is 100% efficient). If you double your battery capacity, you would probably hit your runtime goals. Keeping those batteries charged though, could be problematic unless you have a lot of solar capacity and/or live in a high wind zone area and use one or more large enough wind turbines.
 

X-Gamers

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Sorry man when I thought of this I was over thinking the situation.
 

X-Gamers

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Yea this is going to be my almost all-purpose build type workstation. Yea I thought about it in and out and the specialize drivers I probably wouldn't need as much unless doing heavy CAD type work plus if I did I could always spoof the gtx to read as a quadro. I just didn't see the price/performance was there when comparing the gtx 980 ti or titans.
 

ScrewySqrl

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that site suggest a UPS (30 pounds) and *10* battery packs at 70 pounds a piece to get you to 8 hours. at a cost of $5600+ to deliver. very heavy.

Then how the file-socket do you recharge them?

if you're going off grid, you'll be better off with one of those $100 one-child-one-computer laptops that charge up like a cell phone, or at most a tablet or something like a surface or 8-hour untrabook, which you can charge off your existing solar cell or wind turbine that runs the rest of your survival bunker.
 

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