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post #1 of 9 (permalink) Old 03-14-2019, 04:30 PM - Thread Starter
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Inline DIY battery backup?

I'd like to add an inline battery backup to my computer desk and probably need to go with an ultra small setup or DIY something since I would like to build it into the 6x6 chamber on the back of the desk. You can see it here:

Any suggestions on where to start?
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post #2 of 9 (permalink) Old 03-14-2019, 05:36 PM
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Quote: Originally Posted by TheGreyWizard View Post
Any suggestions on where to start?
You head over to the store and buy a UPS

The fact you are asking were to start means you don't know what you are getting yourself into. To build an uninterruptible power supply requires in depth knowledge of AC and DC systems and battery charging systems. Separetly, these are easy to understand systems, but the integration together is not.
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post #3 of 9 (permalink) Old 03-31-2019, 10:00 PM - Thread Starter
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I agree, this is my first attempt at adding something like this to my setup.

I did find this UPS, seems to have really good reviews:

https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1

Fits my size requirements and is a great price too.
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post #4 of 9 (permalink) Old 03-31-2019, 10:28 PM
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You're going to want to get a sine ups. Like these: https://www.amazon.com/CyberPower-CP...6VD7PES93&th=1
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post #5 of 9 (permalink) Old 03-31-2019, 10:30 PM
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A couple suggestions is to look for a UPS that allows replacement of the battery(s) and to find one that will deliver 200% of the wattage you need right now. This will allow it to be a good investment and suit the system for years to come.

If you are looking to build then you need to decide on the battery chemistry you want, the desired run time you will need. and a good idea of loading you will be applying.
Most UPS that i have seen use SLA for storage.

I myself ran a Belkin unit from a yard sale that had dead battery's. just made a jumper cable and added a deep cycle to it (NOT advisable indoors they can offgas) lasted a couple hours. I then bought the right battery's and gave it to mom who still uses it.

Keep in mind conventional Lead acid battery (think car) can/will emit hydrogen sulfide that is explosive at 4% concentration. Some claim it only happens when overcharge some claim it always happens. Honestly i don't care, i just take it into account.

I would hunt your local classifieds like Kijiji (canadian) or Craigslist, see what out there.

That's my ramblings anyways, Cheers

OH, get yourself a wattmetter like killawatt
https://www.amazon.com/P3-P4400-Elec.../dp/B00009MDBU (fist link i found)

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post #6 of 9 (permalink) Old 03-31-2019, 11:19 PM
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<3 my 1500 cyberpower.,

ups and psu - two things you don't cheap out on.

R.I.P. Zawarudo, may you OC angels' wings in heaven.
If something appears too good to be true, it probably is.
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post #7 of 9 (permalink) Old 04-01-2019, 06:22 AM
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Quote: Originally Posted by Drake87 View Post
You're going to want to get a sine ups. Like these: https://www.amazon.com/CyberPower-CP...6VD7PES93&th=1
I totally agree. If a UPS says it has anything other than a sine wave output (not modified sine wave), it may not work well, if at all, with your computer.

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post #8 of 9 (permalink) Old 04-01-2019, 04:32 PM
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Quote: Originally Posted by Lady Fitzgerald View Post
I totally agree. If a UPS says it has anything other than a sine wave output (not modified sine wave), it may not work well, if at all, with your computer.
I made this mistake when I bought my first UPS. Ruined a power supply and two hard drives never worked right afterward.
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post #9 of 9 (permalink) Old 04-11-2019, 02:34 AM - Thread Starter
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Ok so check on the sine wave UPS, great advice.

I would opt for something like the Cyberpower 1500, but that thing is huge and would need to reside outside of even my very large desk case.

It would be nice to be able to incorporate this into the back of the chamber, but it's slightly limiting with the chamber being roughly 6x6x60 and already has a 1000w power supply and surge protector, so probably down to half of that overall length of that 60".

I don't think DIY is something I'd want to attempt for this and it seems most of these UPS are fairly large because they're lead-acid batteries and take up a lot of space.

Is there some smaller, compact lithium-ion sine wave UPS version available?

I may just opt to skip this all together and finally read some of the books I continue to buy during a power outage...
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