I have an APC ES-350 hooked up to a flat screen tv with amplifier and a radio. The tv and amplifier were on and all of a sudden there is a steady continual alarm coming from the ES-350. We've only had the battery back less than six months. I turned the tv and amplifier off then turned off the battery back up, then waited and turned it back on and within a few seconds the alarm came back on. Is there batteries in this unit that need to be changed????

you may have a defective switch that is on/off button and is not serviceable.
I suggest you purchase a new APC model and by pass the headache here unless this is a project. You will need to take this unit apart and then call the manufacturer for a new part that may or may not be available or the unit is discontinued.

Jul 03, 2010 • APC Back-UPS ES 350 - UPS ( external ) -...

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APC Back-UPS ES 350 - when powered on has a blinking green light Is this normal

A blinking green light is likely an indication that the internal battery is nearing the end of its usable life cycle. If it's over 3 years old this is likely the case. To test, plug something in to the battery outlets and pull the plug of the UPS from the wall. If you get a short runtime (or none at all) it's the battery. Batteries are under $20 and can be found here: http://www.batteryinternational.com/apc-backups-es-be350u-ups-battery-ups-batteries-f1.html

Oct 06, 2009 • APC Back-UPS ES 350 - UPS ( external ) -...

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Need charging instructions for apc back-ups es 350

Take off the bottom cover and make sure the battery is connected (both terminals).
Plug the unit into a wall outlet.
Press the power button to turn it on. Leave it plugged in for 8 hours to charge the battery. Do this with nothing plugged into the unit.

Done.

Aug 08, 2009 • APC Back-UPS ES 350 UPS System

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2answers

APC external Backup battery is not working plz

It may just need a new battery. The UPS will do a self test on the battery when you turn it on. It may have tried to read the battery and the result came back as "failed". The batteries last about 3-5 years, even less if you live in an area with bad power. The batteries are very easy to change. You can buy replacements at www.batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html

Jun 08, 2009 • APC Back-UPS ES 350 - UPS ( external ) -...

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APC ES-350 won't turn on; all I see is a blinking light.

Try looking for a small circuit breaker on the side that says "press to reset" - you could have tripped it accidentally when you unplugged the iPod. Also, try pressing and holding the UPS power switch for 10-15 seconds. That should force a power on as well.

May 27, 2009 • APC Back-UPS ES 350 - UPS ( external ) -...

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2answers

APC UPS issues

If its really a noise? neutral and ground of your utility power (building transformer) should be bonded

Apr 14, 2009 • APC Back-UPS ES 350 - UPS ( external ) -...

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2answers

APC ES350 strange noise

My solution was to unplug everything, hit the reset button, and then power the unit back up. The problem I found to be that I had my laser printer connected to the "surge + battery" side, and for some reason no laser printer can be connected to it.

Sep 28, 2008 • APC Back-UPS ES 350 - UPS ( external ) -...

Question 2

Curt Tresenriter

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Posted on Dec 08, 2010

Curt Tresenriter

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Yes there are replaceable batteries but if yours is only 6 months old and was new this should not be the problem. That said, batteries only have a certain lifespan from the date of manufacture. If it sat on a shelf for a long time before it was sold the battery could be junk.

Is the tone continuous? If so this is the overload alarm.

Testimonial: "Thank you so much for your prompt reply!!"

Curt Tresenriter Dec 20, 2010

You're welcome. Hope it helped. You're welcome. Hope it helped.

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Hey whats the beeping sound for the apc ups es 350?? and how can i tell its fully charged??

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Back-UPS ES 350 - UPS ( external ) - 350 VA - UPS battery lead acid - 6 output connector(s) (NEWITEM13161548) UPS System

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