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Is it wise to use UPS to connect more than one computer?

  1. #1
    Gold Member webworld's Avatar
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    Question Is it wise to use UPS to connect more than one computer?

    I have a laptop, the battery of which is almost dead now. Now I think I will go for a UPS for my laptop so that I can run it without a battery. I am also planning to buy a desktop in near future. So, can I use the same UPS to connect both my laptop and desktop? Is there any technical issue or over loading problems? I just need 5 minutes of backup during power-cuts to properly shutdown the computers.

    Would appreciate your valuable suggestions.

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    Overloading occurs when you draw more current than input. As you didn't mention the UPS specs, I cannot suggest you anything. But I can provide some general idea about UPS. Calculate the power drawing of your systems (mentioned on power cable), and check it with the UPS storage. Make sure you buy an UPS with much more power storage than the power drawing of your system.
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    UPS is the backup power. Just like a battery I guess you can connect two computers onto it. I have never seen this but an ups is a power backup and regulator so yes you can connect your machines. ( note that I am not a professional in this and if anything burns I am not responsible for this. I am just giving my opinion)

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    Gold Member webworld's Avatar
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    Quote Originally Posted by shourya119 View Post
    Overloading occurs when you draw more current than input. As you didn't mention the UPS specs, I cannot suggest you anything. But I can provide some general idea about UPS. Calculate the power drawing of your systems (mentioned on power cable), and check it with the UPS storage. Make sure you buy an UPS with much more power storage than the power drawing of your system.
    I think you got a valid point there. Normal UPS is meant for only one device like a desktop. I visited a computer shop recently, they got some very good branded UPS models of iBall which cost us around Rs.2000/-. But I think it will be much cheaper online. As per the person there by using the UPS for multiple devices also reduce the battery time for use. If there is a power cut, there will be hardly anytime to shut down the PC in a proper way. But if we use it for only one computer we can have somewhat 20 minutes without electricity. That is enough time to save data, close running applications and shut down the PC.

    I hope the a laptop will take less power than a desktop which got larger monitors compared to laptop.

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    Silver Member Cashewfruit_wine's Avatar
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    I think each computer needs to have its own UPS, Its better if a certain PC is permanently attached to it's ups. If you want to use a UPS for your laptop but its own UPS. I know the UPS with longer lasting power sources are expensive but they were worth it.

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    I suggest you go for APC UPS instead of iBall or some other !
    APC is very reliable though expensive.
    Regards,
    Shrinivas

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    Even when your laptop battery does not have much life, it can still be useful for momentary drops in power or short outages. I always keep my older laptops running on battery even with a UPS. The battery actually acts like a second UPS.

    Now, to answer your question about multiple computers on the same UPS--perfectly normal to do so. The only issue is that it will reduce the runtime of the UPS because of the increased load. But if that's an issue, get a larger capacity UPS. In our businesses in the US, we have several UPSs, each with several different things plugged in from computers, to scanners, even calculators and security systems. Just get a quality UPS (APC is great) and one that has enough capacity and you'll be fine.

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