Help
  • Explore Community
  • Get Started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Notifications
Login / Register
Community
Community
Notifications
close
  • Forums
  • Knowledge Center
  • Events & Webinars
  • Ideas
  • Blogs
Help
Help
  • Explore Community
  • Get Started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Login / Register
Sustainability
Sustainability

Join our "Ask Me About" community webinar on May 20th at 9 AM CET and 5 PM CET to explore cybersecurity and monitoring for Data Center and edge IT. Learn about market trends, cutting-edge technologies, and best practices from industry experts.
Register and secure your Critical IT infrastructure

APC Power-Saving Back-UPS Pro 900 noise

APC UPS for Home and Office Forum

Support forum to share knowledge about installation and configuration of APC offers including Home Office UPS, Surge Protectors, UTS, software and services.

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 
  • Home
  • Schneider Electric Community
  • APC UPS, Critical Power, Cooling and Racks
  • APC UPS for Home and Office Forum
  • APC Power-Saving Back-UPS Pro 900 noise
Options
  • Subscribe to RSS Feed
  • Mark Topic as New
  • Mark Topic as Read
  • Float this Topic for Current User
  • Bookmark
  • Subscribe
  • Mute
  • Printer Friendly Page
Invite a Co-worker
Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.
You have entered an invalid email address. Please re-enter the email address.
This co-worker has already been invited to the Exchange portal. Please invite another co-worker.
Please enter email address
Send Invite Cancel
Invitation Sent
Your invitation was sent.Thanks for sharing Exchange with your co-worker.
Send New Invite Close
Top Experts
User Count
BillP
Administrator BillP Administrator
2151
Teken
Spock Teken
99
voidstar_apc
Janeway voidstar_apc
83
View All

Invite a Colleague

Found this content useful? Share it with a Colleague!

Invite a Colleague Invite
Solved Go to Solution
Back to APC UPS for Home and Office Forum
Solved
Anonymous user
Not applicable

Posted: ‎2021-06-29 07:21 AM . Last Modified: ‎2024-03-21 04:59 AM

0 Likes
2
1984
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2021-06-29 07:21 AM . Last Modified: ‎2024-03-21 04:59 AM

APC Power-Saving Back-UPS Pro 900 noise

Hi. I'm planning to adquire an APC Power-Saving Back-UPS Pro 900, 230V and I'd like to ask a question about it. In the product specs it list a noise level of 45 dBA, which is pretty high. Does the unit produce this noise all the time or only when running on battery power? Also, does this unit have a fan? If it does, is it running all the time at full speed or does it turn on/off and has its speed regulated?

Thanks in advance for your assistance!

Labels
  • Labels:
  • Back-UPS & Surge Protectors
Reply

Link copied. Please paste this link to share this article on your social media post.

  • All forum topics
  • Previous Topic
  • Next Topic

Accepted Solutions
Anonymous user
Not applicable

Posted: ‎2021-06-29 07:22 AM . Last Modified: ‎2024-03-21 04:59 AM

0 Likes
0
1984
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2021-06-29 07:22 AM . Last Modified: ‎2024-03-21 04:59 AM

Hi again.

I finally bought the Back-UPS Pro 900 and sadly had to sent it back for noise reasons. I've tried two units, both with the same result. This unit has no fan but produces a lot of noise. The units I tested had three different noise levels. The louder one was when the system was running on battery power, which is expected and not a problem as it will only happen when there is a power cut and for a short period of time. There is a different noise when the battery is being charged. It's not as loud as when the UPS runs on battery but it's annoying. Notice it takes a lot of time to charge the battery. It shouldn't be a problem with a new battery, but it could become an issue when the battery gets old and requieres periodic recharging or if your power supply has frequent cuts. It's not critical, but there are other UPS that don't make a notable noise when recharging the battery. The real problem was a third noise, the one that the UPS produced all the time. It's much quiet than the one that's produced when the battery is being charged, but it's noticeable if you have a quiet computer, as I do. This noise was produced even with nothing connected to the UPS.

My power supply is stable, so I assume the AVR function was not working (and producing the noise). The LCD panel on the UPS showed stable in voltage and frequency.

So, in my opinion, this UPS is not good for a quiet computer (regulated fans, semi fanless PSU, SSD, 5400rpm drives soft mounted, quiet case). If you have a noisy computer it may hide the UPS running noise.

See Answer In Context

Reply

Link copied. Please paste this link to share this article on your social media post.

Replies 2
Anonymous user
Not applicable

Posted: ‎2021-06-29 07:22 AM . Last Modified: ‎2024-03-21 04:59 AM

0 Likes
0
1984
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2021-06-29 07:22 AM . Last Modified: ‎2024-03-21 04:59 AM

Hi triton, yes the unit will be at its loudest when it is discharging on battery typically (due to the fact that fan will be running and the inverter will be in use). However when the unit is online the fan is typically not running and since the unit it just passing power through it will be much quieter. Hope this helps.

Reply

Link copied. Please paste this link to share this article on your social media post.

Anonymous user
Not applicable

Posted: ‎2021-06-29 07:22 AM . Last Modified: ‎2024-03-21 04:59 AM

0 Likes
0
1985
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2021-06-29 07:22 AM . Last Modified: ‎2024-03-21 04:59 AM

Hi again.

I finally bought the Back-UPS Pro 900 and sadly had to sent it back for noise reasons. I've tried two units, both with the same result. This unit has no fan but produces a lot of noise. The units I tested had three different noise levels. The louder one was when the system was running on battery power, which is expected and not a problem as it will only happen when there is a power cut and for a short period of time. There is a different noise when the battery is being charged. It's not as loud as when the UPS runs on battery but it's annoying. Notice it takes a lot of time to charge the battery. It shouldn't be a problem with a new battery, but it could become an issue when the battery gets old and requieres periodic recharging or if your power supply has frequent cuts. It's not critical, but there are other UPS that don't make a notable noise when recharging the battery. The real problem was a third noise, the one that the UPS produced all the time. It's much quiet than the one that's produced when the battery is being charged, but it's noticeable if you have a quiet computer, as I do. This noise was produced even with nothing connected to the UPS.

My power supply is stable, so I assume the AVR function was not working (and producing the noise). The LCD panel on the UPS showed stable in voltage and frequency.

So, in my opinion, this UPS is not good for a quiet computer (regulated fans, semi fanless PSU, SSD, 5400rpm drives soft mounted, quiet case). If you have a noisy computer it may hide the UPS running noise.

Reply

Link copied. Please paste this link to share this article on your social media post.

Preview Exit Preview

never-displayed

You must be signed in to add attachments

never-displayed

 
To The Top!

Forums

  • APC UPS Data Center Backup Solutions
  • EcoStruxure IT
  • EcoStruxure Geo SCADA Expert
  • Metering & Power Quality
  • Schneider Electric Wiser

Knowledge Center

Events & webinars

Ideas

Blogs

Get Started

  • Ask the Community
  • Community Guidelines
  • Community User Guide
  • How-To & Best Practice
  • Experts Leaderboard
  • Contact Support
Brand-Logo
Subscribing is a smart move!
You can subscribe to this board after you log in or create your free account.
Forum-Icon

Create your free account or log in to subscribe to the board - and gain access to more than 10,000+ support articles along with insights from experts and peers.

Register today for FREE

Register Now

Already have an account? Login

Terms & Conditions Privacy Notice Change your Cookie Settings © 2025 Schneider Electric

This is a heading

With achievable small steps, users progress and continually feel satisfaction in task accomplishment.

Usetiful Onboarding Checklist remembers the progress of every user, allowing them to take bite-sized journeys and continue where they left.

of