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Costco Members: CyberPower 1400VA 900Watts True Sine Wave UPS System

$150
$179.99
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Costco Wholesale has for Costco Members: CyberPower 1400VA 900Watts True Sine Wave UPS System (CST1400S) for $149.99. Shipping is free. Thanks cb56789

Note, those without a membership may purchase w/ 5% non-member surcharge.
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Editor's Notes & Price Research

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Offer valid through October 21, 2019 or while supplies last. - CChoiVA

Original Post

Written by
Edited September 27, 2019 at 03:45 PM by
Costco has CyberPower 1400VA / 900Watts True Sine Wave Uninterruptible Power Supply (UPS) for $179.99-$30 = $149.99 with free S&H from 9/26/19 to 10/21/19.

IMO, this is a good price for a true sine wave UPS in the market at this moment.

https://www.costco.com/.product.625411.html
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Created 09-26-2019 at 09:00 AM by cb56789
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The power you get form the power company is a sine wave. Certain electronics expect a sine wave, and either don't function or function poorly when they receive a non-sine wave or simulated sine wave.


If the device uses an AC adapter (wall wart, power brick), it does not need pure sine wave. The adapter is just a capacitor which stores the AC (oscillating voltage) electrical energy to convert it into DC (constant voltage) electrical energy the device uses. It can store energy from a simulated sine wave just as easily as from a pure sine wave.
If the device contains some sort of motor (pumps, blenders, etc), it almost certainly needs a pure sine wave. These motors are designed so that a sine wave results in a constant RPM. Feed them a simulated sine wave and they won't run at a constant speed, which could possible damage or destroy the motor.
If the device converts the AC electricity to DC before using it (e.g. desktop PCs), then it probably doesn't need a pure sine wave. Most of them do fine with a simulated sine wave. But some of the newer more expensive ones (aka PFC or high-efficiency power supplies) gain their higher efficiency by tracking the AC sine wave closely so it can extract every iota of power. Feed it a simulated sine wave, and the algorithms designed to track a pure sine wave no longer follow the waveform exactly, and it doesn't work.


What makes a pure sine wave UPS "better" is that all electronics will function on a pure sine wave UPS (assuming it can put out enough wattage to power your devices). Most but not all devices will work with a simulated sine wave UPS. So if you want assurance that it'll work regardless of what you plug into it, you'll want the pure sine wave UPS.


These use sealed lead acid batteries (aka gel cells). Their failure mode is simply that they don't put out as much power. They don't catch on fire like Li-ion batteries. Worst case if you punctured them, you could spill acidic residue. But it would take some work to puncture one (you'd have to penetrate the UPS shell, then the battery shell, then the flexible plastic barrier housing the lead and acid).

They were originally designed for things like radio controlled cars, where you'd expect a lot of movement and possible tipping. Unsealed lead acid batteries don't react well to being tipped over (they need the lead plates to be fully submerged in the acid bath electrolyte). So these were invented to keep the lead surrounded by the electrolyte no matter the orientation, and the electrolyte is gelled so it won't spill out from a simple hole or crack.


As someone else mentioned, that's a classic sign of the battery having worn out. It can't put out as much power, which your electronics interpret as losing power after a few minutes or seconds. Lead acid batteries:

Don't like being maintained at 100% charge.
Don't like being discharged below 50%

The first is unavoidable with a UPS battery, but the lead acid batteries tolerate it better than Li-ion batteries (though most devices simply treat 80% charge on a Li-ion battery as 100%).

The second can be avoid with a slightly different design (so-called deep cycle batteries). But most lead-acid batteries aren't deep cycle, and are intended for light duty with frequent recharges (i.e. between 50%-100% charge, preferably between about 70%-80% like your car battery). If your UPS only ever kicks in for a few seconds to minutes before power comes back, then you shouldn't have problems with this and it'll probably last you 5-10 years before it needs to be replaced. But if your power goes out frequently for long periods, or the power draw is high enough that you use most of the charge in the UPS before shutting your equipment down, then the battery will wear down quicker. You may only get 1-3 years out of it.
24 Helpful?
Dang, I wish I'd caught you sooner. APC batteries can be replaced with $15 Yuasa battery packs. Eaton uses these and doesn't bother to cover up the Yuasa branding, unlike APC that puts foil stickers on theirs and marks up the batteries by 400%.

Anyway, once I figured out APC's scam and bought the same-specced batteries from Yuasa as well as got/made a desulfator, I no longer need to buy batteries over and over. With distilled water and a desulfator, it is possible to make flooded lead acid batteries last much, much longer.
21 Helpful?
The model is the CST1400S ( https://www.cyberpowersystems.com.../cst1400s/ ). It is a Costco exclusive according to their customer service and it is also a pure sine wave UPS. The sine wave technology is identical to what they use in the CP1500PFCLCD, it is just cheaper in this case through Costco. The only differences I was seeing between the two are the obvious 1400VA vs 1500VA and that the CP1500PFCLCD is compatible with EnergyStar 6.0 systems vs just 5.0 with the Costco one.

I have been waiting for a deal on a true sine wave one. I already have 2 CP1500PFCLCD's and I needed a third. Once I saw the ad a few days ago I called cyberpower and confirmed the sine wave technology was the same and it was an instant buy for me. As you pointed out, it's been way too long since a good deal hit on the CP1500PFCLCD.
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#3
I think it is a good deal, pure sine wave isn't cheap. I'd think about buying one if I didn't already have an old modified junker that mainly just covers brown outs.
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#4
Quote from cb56789
:
IMO, this is a good price for a true sine wave UPS in the market at this moment.
This is probably the best for 900W recently.
Missing the once or twice every year $120 deal for the CP1500PFCLCD 1500VA/900W, but it hasn't happened for over 2 years.

Did CyberPower make this one only for Costco? (it's odd at 1400VA/900W)
Can't find it by navigating or searching on CyperPower website unless I use google search which goes directly to its page.
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#5
Quote from megazone23
:
This is probably the best for 900W recently.
Missing the once or twice every year $120 deal for the CP1500PFCLCD 1500VA/900W, but it hasn't happened for over 2 years.

Did CyberPower make this one only for Costco? (it's odd at 1400VA/900W)
Can't find it by navigating or searching on CyperPower website unless I use google search which goes directly to its page.
It's very likely CyberPower made this just for costco due to the large demand and buying power from costco. Also, because the different product number, you will not be able to do price match at different location.
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#6
Quote from megazone23
:
This is probably the best for 900W recently.
Missing the once or twice every year $120 deal for the CP1500PFCLCD 1500VA/900W, but it hasn't happened for over 2 years.

Did CyberPower make this one only for Costco? (it's odd at 1400VA/900W)
Can't find it by navigating or searching on CyperPower website unless I use google search which goes directly to its page.
Yup, this is what I've been waiting for, need another one
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#7
Quote from megazone23
:
This is probably the best for 900W recently.
Missing the once or twice every year $120 deal for the CP1500PFCLCD 1500VA/900W, but it hasn't happened for over 2 years.

Did CyberPower make this one only for Costco? (it's odd at 1400VA/900W)
Can't find it by navigating or searching on CyperPower website unless I use google search which goes directly to its page.
Usually the Costco version has some difference that makes it slightly better than the normal product. I can't figure it out in this case.
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#8
Reading the reviews and it seems like these fail around the end of the warranty period very often
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#9
Bought one. My APC's battery just went dead.
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Quote from T07N
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Bought one. My APC's battery just went dead.
You know the batteries are replaceable, right? Typically, it is a lot cheaper than buying a new unit.
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Quote from JWh1te4
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Reading the reviews and it seems like these fail around the end of the warranty period very often
Also because when they do go on sale they've usually been sitting and they want to get rid of old stock.
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#12
Quote from taylorcs
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You know the batteries are replaceable, right? Typically, it is a lot cheaper than buying a new unit.
Some of the APC units are not designed to be easily swap out with a new battery.
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ELI5 - What makes true sine wave UPS better than a standard one?
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#14
Quote from megazone23
:
This is probably the best for 900W recently.
Missing the once or twice every year $120 deal for the CP1500PFCLCD 1500VA/900W, but it hasn't happened for over 2 years.

Did CyberPower make this one only for Costco? (it's odd at 1400VA/900W)
Can't find it by navigating or searching on CyperPower website unless I use google search which goes directly to its page.
The model is the CST1400S ( https://www.cyberpowersystems.com.../cst1400s/ ). It is a Costco exclusive according to their customer service and it is also a pure sine wave UPS. The sine wave technology is identical to what they use in the CP1500PFCLCD, it is just cheaper in this case through Costco. The only differences I was seeing between the two are the obvious 1400VA vs 1500VA and that the CP1500PFCLCD is compatible with EnergyStar 6.0 systems vs just 5.0 with the Costco one.

I have been waiting for a deal on a true sine wave one. I already have 2 CP1500PFCLCD's and I needed a third. Once I saw the ad a few days ago I called cyberpower and confirmed the sine wave technology was the same and it was an instant buy for me. As you pointed out, it's been way too long since a good deal hit on the CP1500PFCLCD.
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#15
I've been running my CP1500PFCLCD for 7 years 24/7 to protect my tech cluster at home (computer, router, modem, printer, etc). Never a problem, and provided juice and protection during power outages. That makes me very impressed with the product.
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