APC Back-UPS ES 350 - UPS ( external ) - 350 VA - UPS battery lead acid - 6 output connector(s) (NEWITEM13161548) UPS System "battery backup making noise" Questions

...the battery(s) from inside. The backup batteries are still working... Plug it back in and then turn the switch off before unplugging... It thinks you have a power failure when you unoplugged

...battery backup unit. It has started doing something funny. The green light is on. The on battery light blinks yellow along with the green light blinking and it makes noise when doing it. It has been ...

...backup device? 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" ...

My APC Smart UPS 2200xl is making noise. Almost like a fan noise. Does it have fan ???. What happens if it stops working ??? my UPS makes this sound when the mains has been disconnected

...battery backup makes squealing noise, then the power light comes on, why When there is no power coming into the UPS it will indicate so by 'squealing', during this time - the UPS is on battery. When ...

...backup just started making a squealing noise, what could be causing that? Joanne Depending on the unit, thats either telling you the battery is dead, the power is out, its overloaded (too much or too ...

...battery backup unit. It has started doing something funny. The green light is on. The on battery light blinks yellow along with the green light blinking and it makes noise when doing it. It has been ...

plug it in and nothing happens. no lights or noise. The two surge protection outlets draw power, the other six don't. Unplug the surge protector (and all units plugged into it) and take it apart - you

Hi, I have two of these UPS and in both the cooling fan makes a lot of noise, is that normal, or how I can do it to stop that noise. Thanks try removing the fans and remove a sticker at the centre, to

have also replaced a new battery 8 months back...please help noise is very annoying Check to make sure the batteries havn't failed. you will need a Multimeter to verify this... preferrably underload..