expired Posted by phoinix | Staff • Aug 1, 2022
Aug 1, 2022 9:23 AM
Item 1 of 5
Item 1 of 5
expired Posted by phoinix | Staff • Aug 1, 2022
Aug 1, 2022 9:23 AM
10-Outlet APC BX1500M 1500 VA / 900W Battery Back-UPS
+ Free Shipping$150
$200
25% offAmazon
Visit AmazonGood Deal
Bad Deal
Save
Share
Leave a Comment
Top Comments
It's 900w for ~5 minutes, less power draw = longer life. It's not possible to answer your specific question without knowing the draw. I have two power strips plugged in to mine, I'm running my old full tower desktop (i7-3770k w/ 1 tb ssd, 2x 4 TB hdd, 1 8tb hdd, 1070ti), small chinese mini box running an old celeron and an nvme for pfsense (firewall/internet gateway uses 8w), a cable modem, an asus ap, a synology nas (ds920+ w/ 2x 12 tb), 24" asus screen, 32" samsung 2k, an old RCA shelf stereo system wired into the desktop.
Turning off my desktop during an outage increases the time to ~25 minutes which is more than enough time for the ds920 to do a proper shutdown if needed - most outages last only seconds but they've been up to ~7+ hours. There is an alarm on the UPS, I turned it off, and an LCD that shows how much power is left etc.
There is (windows) software, but I don't use it, not sure if it can trigger a shutdown or not.
Answer:
It is in between. Though not pure sine wave, it has many little steps, vs Modified (modified square wave) which is simply 0 + 0 - 0 + 0 - 0 +... (3 status levels) A very good explanation and comparison graphs are shown at: https://linustechtips.c
I noticed some of the 1-star video reviews posted on Amazon's APC product page show the product running on carpet and throwing an overheating alarm. You may want to avoid sucking carpet lint into your UPS regardless of model.
53 Comments
Sign up for a Slickdeals account to remove this ad.
What about an external monitor? What about external monitor and laptop at the same time?
Sign up for a Slickdeals account to remove this ad.
This is really useful information for my planned set up. I just want backup for my modem and router, which would be about 20W. I looked at the website for an APC 650VA unit [apc.com]
(Is this the same unit you have?). That website has a calculator for runtime, when you input your power draw. It doesn't let me enter a number lower than 36W. For 36W it shows a run time of 1hours and 11 minutes. I wonder if this unit dissipates a minimum amount of power by itself and it is not useful for a low power draw backup system?
The APC 450VA unit [apc.com] has a minimum of 10W for the calculator and shows a runtime of 1 hours and 43 minutes for 20W. So according to their website, the smaller unit would have a longer runtime powering a low power device from the battery.
Leave a Comment