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Author Topic: UPS Backup Supply - What's your choice?  (Read 2279 times)

Chris Hindle

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Re: UPS Backup Supply - What's your choice?
« Reply #10 on: February 20, 2019, 12:39:53 pm »

I checked when I purchased my UPS to be sure and it was over 5 years ago. According to what I have read, 3-5 years is what is considered to be the battery life yet mine still holds 100% charge. score!

Debbie, UPS generally run 24/7, Yours doesn't.
Of course, with less time "plugged in", you should expect longer battery life.
On the other hand, once you've got a few years on it, run the battery down a time or two, and it may report 100, but you won't get the expected runtime.
Chris.
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Bob Stone

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Re: UPS Backup Supply - What's your choice?
« Reply #11 on: February 20, 2019, 01:57:04 pm »

Debbie, UPS generally run 24/7, Yours doesn't.
Of course, with less time "plugged in", you should expect longer battery life.
On the other hand, once you've got a few years on it, run the battery down a time or two, and it may report 100, but you won't get the expected runtime.
Chris.

Agreed. You should test the UPS by running it down under load. Old batteries will charge to 100% but drop from 100% to 90% in 2 minutes and then 90% to 0% in 5 seconds after that if cells have gone bad. I've found most UPS's I've owned will hit that point after roughly 4 or 5 years.
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Dave Garoutte

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Re: UPS Backup Supply - What's your choice?
« Reply #12 on: February 20, 2019, 04:15:38 pm »

Figure out you wattage draw and attach a light bulb or two to replicate the load.
Time how long it stays lit.
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Debbie Dunkley

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Re: UPS Backup Supply - What's your choice?
« Reply #13 on: February 20, 2019, 08:31:57 pm »

Will do. I was checking out replacement batteries too - less than $50 for both and an easy replacement - so not too bad.
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Jeff Stielau

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Jeff Stielau
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Debbie Dunkley

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Re: UPS Backup Supply - What's your choice?
« Reply #15 on: February 21, 2019, 09:28:10 am »

When I purchased mine I took the advice from folks here who advised me to get 'pure sine wave' which I did.
Would 'simulated sine wave' make much difference?
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Jeff Stielau

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Re: UPS Backup Supply - What's your choice?
« Reply #16 on: February 21, 2019, 09:48:09 am »

When I purchased mine I took the advice from folks here who advised me to get 'pure sine wave' which I did.
Would 'simulated sine wave' make much difference?



Hmmmmm.....I suppose if it's only in emergency/short term situations...it's fine.

http://www.minutemanups.com/support/pwr_un10.php
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Jeff Stielau
Shoreline Electronics & Sound
344 East Main Street
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Bob Faulkner

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Re: UPS Backup Supply - What's your choice?
« Reply #17 on: February 21, 2019, 10:58:56 am »

So, considering simulated sine waves and square waves, which one would you put first in-line from the utility power:

UPS or voltage regulator?

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Bob Stone

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Re: UPS Backup Supply - What's your choice?
« Reply #18 on: February 21, 2019, 11:30:38 am »

When I purchased mine I took the advice from folks here who advised me to get 'pure sine wave' which I did.
Would 'simulated sine wave' make much difference?

Simulated sine wave is basically a step function rather than an actual sine wave. Pure sine wave for audio purposes (especially analog gear) is pretty important. In the end though, if it's the choice between no UPS or a cheaper UPS without pure sine wave, I'll take the UPS every time.
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Debbie Dunkley

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Re: UPS Backup Supply - What's your choice?
« Reply #19 on: February 21, 2019, 01:02:52 pm »

Just tested my UPS under load - basically the same load that would apply at a show. I actually used my usual equipment as I couldn't find anything to substitute.
When I disconnected the mains supply, the meter showed 19 minutes estimated battery run time. I kept checking the display time and I noticed it counted down more slowly than actual minutes run to start but then the countdown started to quicken. Finally once it was depleted down to what was shown as 4 minutes run time left which caused the alarm to start going off, it had actually run for 21 minutes 33 seconds. Not bad considering I got this UPS from Costco for $89 from memory.
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Re: UPS Backup Supply - What's your choice?
« Reply #19 on: February 21, 2019, 01:02:52 pm »


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