How long will a 2.0 amp draw last on a 400 watt battery back up system. UPS  ?

7 Answers

  • Anonymous
    3 weeks ago

    Green 666 by isotope rays is NOT forgivable; it leads to permanent hell. 666 is given with World Passport with no name on it (grey plastic card). Police 666 people on highways. Food stores and prisoners/insane asylum folks (released by the antichrist) 666 people too. Reject vaccines. Don't go into UFO to be healed by demons. Hide with Orthodox Christians to escape 666; leave all electronics behind so that antichrist's minions can't track you; burn documents as documents are from Satan.

    Source(s): According to the Last Prophet (aka incarnated ARCHANGEL URIEL aka saint healer VYACHESLAV KRASHENINNIKOV) if the last descendant rejects mark of the beast, then his/her direct ancestors go to permanent heaven. To reject mark of the beast, one needs to hide within a 10-15 people group without electronics/documents. Documents are from Satan; burn them. Electronics can be used to track you and to show the antichrist (even on old broken unplugged TV set from 1970's using Tesla's ether); forgive me.
  • 4 weeks ago

    Since UPS usually outputs 110 volts, a 2 amp draw will dissipate 220 watts/Hr. Depending on the model UPS it might have a shut off point where the battery has been drained a certain amount. The device needs to use power itself, so the device it's powering isn't the only drain on the internal battery. Read the instructions that come with your UPS and it will tell how to calculate how long the UPS will run. When in doubt, do a backup and shut down to avoid data loss or device damage when power fails and the UPS takes over.

  • Anonymous
    1 month ago

    If Output of UPS is 117 volts, in theory,   1.7 hours or  1 hr, 42 mins.

     If output is 234 volts (Europe), about     51 minutes.

    This is assuming ideal situation, batteries  good,  the 400VA rating is for one hour. Not a 3 or 10-hour rate (I doubt this, I 've had two).

    EDIT: Most  larger UPS' use 48 volts, total, in the battery complement. Usually means, Four 12-volt gel-cells. You'd need  Four standard 12 bolt car batteries. (some pickups are 24-volt), and, unless  sealed, can be hazardous inside a dwelling, yes. At Least put them in a plastic tray and run a fan that uses a synchronous motor (no brushes-!!) to help vent gasses.

  • Not enough information with your question is provided. I wouldn't recommend putting a car battery inside your house if that's what you're doing. Unless the battery is NOT being charged or discharged and it is safely being stored.

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  • Anonymous
    1 month ago

    I'm an expert and there isnt enough information. What voltage is the battery? What voltage is the draw? What kind of battery is it? 

    Also batteries have what is known as a "safe depth of discharge". Lithium phone batteries can be 90% discharged without hurting them. But lead acid car batteries shouldnt be discharged below 50% capacity. 

    Etc etc etc

    Not enough information.

  • ?
    Lv 7
    1 month ago

    About an hour and 45 minutes.  

  • Anonymous
    1 month ago

    Until the life of the battery comes to an end. Then you will have to buy a $2,000 casket.

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