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Questions tagged [ups]

A UPS (uninterruptible power supply) is a device used to provide instant backup power to critical systems for safe shutdown in the case of a power outage.

3 votes
4 answers
9k views

computer shutoff suddenly, I have a APC backup UPS SE 350

My computer suddenly shutoff (abruptly), and then the APC (UPS SE 350) started to beep continuously. I pressed the button on it and it stopped, then I pressed it again and it turned on (green light) ...
1 vote
1 answer
79 views

Powerchute Windows10 and reducing power consumption while on UPS battery

I have a computation app that can sense running on batteries, but does not trigger when PowerChute 3.1.0 is running on battery power (APC UPS1500 Pro). That app knows the power is limited, but Win10 ...
1 vote
2 answers
5k views

How to disable power on/off beep on UPS (CyberPower CP1350PFC)

I've had a couple UPS in the past, but the beep on this UPS (CyberPower CP1350PFCLCD) is a little obnoxious and loud. The "mute notifications" button only stops it from beeping during a power outage, ...
0 votes
1 answer
112 views

Ellipse Pro Issues since Driver Upgrade

Back in '21 downloaded the latest driver Eaton UPS Companion (deprecated link now) for the 5S 1200AU (P348G35D92), and received the following error on this rig with W10 20H2: There was also a hang-...
2 votes
1 answer
59 views

Good battery, but UPS fails to do its job

I have a not-so-old APC Back-UPS 1400 (model BX1400U). It uses 2 x 12 V / 7 Ah batteries. The original batteries are dead (voltmeter says less than 5 Volts, ultra dead). I bought 2 new batteries (12 V,...
0 votes
2 answers
4k views

My UPS can't handle PC load sometimes, what's wrong?

So I recently built a PC and with it, I bought a cheapish 600W UPS. My PC on PCPartPicker showed that I required around 330W to use it properly (I went with a 700W PSU). I also have my monitor and ...
1 vote
2 answers
5k views

Synchronizing shutdown of several computers on one UPS

With a single computer working from a UPS, a power outage would result in the computer shutting down, followed by the UPS shutting down. The UPS would then not supply power to its outputs. With a USB ...
2 votes
1 answer
196 views

Why are UPS battery backups all rated in VA instead of AH?

Looking at an online retailer, I see uninterruptible (battery backup) power supplies are marketed as: "1500VA" "600VA" "425VA" "425VA/260W" "1500VA/900W&...
3 votes
1 answer
5k views

How to shutdown macOS / mac OSX from Network UPS Tools client - NUT

I’m looking for help in shutting down my iMac on detecting a power failure while running from a UPS. My setup is an APC SMT750i UPS, powering two Synology NASs, and iMac plus the network kit (router, ...
0 votes
0 answers
6 views

PowerSoft netclient on Proxmox

I'm trying to run powersoft netclient (ever ups soft) on a node (kernel Linux 6.5.13-1-pve) inside proxmox ve 8.1.3. Installation goes smoothly, but trying to start powersoft.service displays error: ...
2 votes
1 answer
4k views

Adding another UPS battery in parallel, to increase runtime/VA capacity

Can one parallel two identical batteries and connect to the UPS, and will it act as a single battery of double the capacity? Or is there a problem electronically with it? According to this answer, ...
0 votes
1 answer
73 views

I am stuck with a message popup in UPS software

I have bought a UPS. This came with a mini CD containing software for both Linux and Windows. You can find it here (Energenie: EG-UPS-PS2000-01): I have installed all related softwares, namely Nut, ...
1 vote
0 answers
275 views

Luminous UPS turns off automatically when system left idle

I have Luminous UPS. When my UPS is on battery mode and system is idle it automatically turns off my computer. I have made sure it’s not due to low battery because when I start the UPS again it works ...
4 votes
2 answers
18k views

How to silence "bad battery" alarm in a APC Back-UPS 550 UPS?

I am using Ubuntu and I have an APC Back-UPS 550 uninterruptible power supply that's worked pretty well for several years. However, over the last year, it's "bad battery" alarm has routinely ...
-2 votes
2 answers
372 views

UPS power(w) vs PSU power?

How much power(w) UPS must be for PSU( input 220V/10A)? If UPS rated power is smaller then PC drain power before power loss, will the UPS shut down or what will happen?

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