Question about Powerware NetUPS UPS System

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How can a now if a battery is bad?

The ups don't work when the power fail. I have 2 battery in stock but I don't want to buy 2 more for replace all the batterys.
How can a now what battery in use are bad?

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Batteries can be measured if you are having an electronic voltmeter.
you are saying that your ups is not working after a power fail... there are two chances your battery might be gone or else your ups is not providing the enough charge for the battery to stock. DONOT TRY TO REPAIR THE UPS INSIDE PARTS. Take that to a service personnel asap. if you are making late then if battery is good, then the damage of the battery will be started. cos battery will have maximum life if it is kept in full charge. no charge in the battery will make its life decreasing.

try to show ur ups to the authorized service personnel.......

hope this helps. but be sure before investing in the ups. ask the service personnel to check the battery condition also.

if your battery warranty is expired than that means naturally it is in decay process. then there is no option for you other than buying a new battery

Posted on Feb 06, 2010


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Posted on Jan 02, 2017


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no ,you dont have power.
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know one here can answer any of that.
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if not not.
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Device is making a whistling sound or humming sound. It still has power and is powering the devices plugged into the back up system.

Is the unit running on battery power? A hum is normal when the inverter is running.

if it is CONSTANTLY making a humming noise, it is possible the unit is failing. Check your battery inside the unit, make sure it does not look swollen at all. If it is, you know the unit is failing and overcharging the battery. If it is not, pull the power cable from the outlet and see if it provides back up power and then plug it back in.

If the connected equipment stays on line, then the unit is working fine however I would consider buying a replacement UPS in the near future, a constant hum all the time is a bad sign.


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