CyberPower ST425 Standby UPS Battery Backup and Surge Protector, 425VA/260W, 8 Outlets, Compact, UL Certified
$5.99
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The CyberPower ST425 Uninterruptible power supply (UPS) system provides battery backup and surge protection for lightning-induced surges and other power events that can damage electronic equipment. This unit delivers enough battery backup to power connected electronics through utility power failure and enough runtime to perform a graceful shutdown to protect against the loss of data and damage to valuable electronics during longer outages. Including a sleek design, this UPS is perfect for all your home office and entertainment needs, including computers, gaming consoles, and Broadband routers. With a 75K USD lifetime connected equipment guarantee and a three-year warranty, you can trust CyberPower commitment to the quality of this battery backup with surge protection.
425VA/260W Standby Battery Backup Uninterruptible Power Supply (UPS) System uses simulated sine wave output to safeguard home office and entertainment needs, including computers, gaming consoles, and broadband routers
8 NEMA 5-15R OUTLETS: Four battery backup & surge protected outlets; Four surge protected outlets; INPUT: NEMA 5-15P plug with five foot power cord
ADDITIONAL FEATURES: LED status light indicates Power-On and Wiring Fault, transformer-spaced outlets
GREENPOWER UPS HIGH EFFICIENCY DESIGN: Reduces power consumption by utilizing a compact charger and power inverter to create an ultra-efficient backup power system for home and office use
3-YEAR WARRANTY – INCLUDING THE BATTERY; $75,000 Connected Equipment Guarantee
12 reviews for CyberPower ST425 Standby UPS Battery Backup and Surge Protector, 425VA/260W, 8 Outlets, Compact, UL Certified
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$5.99
Seth Green –
Reliable Backup Power! Great Value in the CyberPower ST425
I recently purchased the CyberPower ST425 Standby UPS System, and it’s exactly what I needed for protecting my electronics.This compact unit offers 425VA/260W of backup power, which is perfect for keeping my essential devices running during short power outages or preventing data loss from unexpected surges. With 8 outlets, I have plenty of space to plug in my computer, monitor, modem, and other peripherals.The compact size is a major plus – it fits neatly under my desk without taking up much space. The black finish is also sleek and blends in well.Setup was incredibly easy; I just plugged it in and connected my devices. It provides peace of mind knowing that my equipment is protected from power fluctuations and that I’ll have a few minutes of backup power to save my work and shut down properly during an outage.For anyone looking for an affordable, reliable, and compact UPS to protect their valuable electronics, the CyberPower ST425 is an excellent choice. It’s a great value for the features it provides.
Jim Gordon –
Competitive value, efficient design, survived a major power surge!
ST625U received 2-25-2020 – I have not had a power outage yet but they happen a lot here in Florida during tropical storm season. EDIT UPDATE ON 10/19/2020 – IMPRESSIVE PERFORMANCE OF ALL THREE OF MY ST625U UPS units when a massive sustained power surge from an underground power cable failure burnt up 5 of my home’s stand alone surge protector outlets! My CPAP kept running right through the event while my neighbor’s wall wiring burnt up! All 3 of my 625’s are still working after giving 40 minutes of stand-by power and their breakers did not blow – END EDIT …. SECOND EDIT 10/2023: all 3 of my units and their batteries are still going strong! I just slept through a short power outage while using CPAP END SECOND EDIT. A slight odor of ‘burnt’ electronics right out of the box is normal for some electronics product manufacturing methods, do not be concerned with a slight odor that does not get stronger with use. It will diminish. I tested this unit with my powered 5 motor recliner, an LED desk light and laptop running while it was unplugged from the wall 5 minutes. I will definitely update the review if any issue develops (done!). I’m a degreed biomedical technician and this design looks fine for short term outages. This is NOT for CPAP sleeping use, battery is far too small except for short power outages. The isolated battery compartment opens easily with one phillips screw and only has battery wires inside it. I inspected the battery and found 13.2 volt charge after 6 hours plugged in. The charging circuit is extra energy efficient and causes almost no detectable waste heat, an excellent feature, as claimed on the box. After 6 hours there was only one small area of the case that had a barely warm feeling, like human skin. You can triple the run time when the original battery wears out by adding a larger battery that does not fit in the case, like a 17 AH SLA battery. You have to extend the battery wires long enough to let the battery sit next to the UPS. You must have soldering skills and the right tools to do this. The larger battery will not allow use of larger, more power hungry devices but it will greatly increase run time for your existing use during power outages. The larger batteries cost about the same but they are more durable. I have no interest in setting up the software monitoring. Just a gimmick for this size device. The UPS software may not recognize a larger battery capacity but it might if it is based only on voltage remaining. As the instructions say, this will beep when power goes out but you can mute the beeping in advance by tapping the main power button twice. I don’t know if it retains the mute setting after a complete battery discharge. You can just locate a battery the same dimensions of the original if you want it to fit in the case. It is ‘CPS5.5AH’ 6 inches long, 3 3/4 high without terminals, and 2 inches wide. I decided to buy another one of this model for my modem, router and Ooma phone box to prevent those tedious full reboots after a power glitch.
J K –
Compact and Powerful Enough For Modem And Two Routers.
CyberPower ST425 Standby UPS System. I got tired of resetting modem and routers each time the power surged or went out for a few seconds. This UPS fit right into the media wall box, simple to use with outlets staggered and flipped positions. In the first week it got its first power outage and performed seamlessly. I don’t know how long it could have run with this low load, this time it was only a few minutes. I could just unplug it and see, but, nah, I ain’t doing that! Well packaged, easy to set up, reasonable price, fast shipping, good seller!
Dave G. –
Does the job but does not turn back on after battery is depleted.
These have been holding up over the years nicely. Only setback is when the power goes out for an extended period of time, these do not power back up on their own. If you use this on a simple home network, and have a concern with a power outage while you are on vacation, this unit is not ideal.
Mike M –
Suits my purpose
Reasonable cost and functional. Has installed a power monitor but when the power went out, so did the Internet and the power off measuring was never received. I use this to keep the modem and router online during a power outage, for a brief while anyway. Does what it said it would. Can’t speak to how long the battery lasts with this load, nor longevity of the unit.
Governor’s Quarters –
Quality product
Great UPS. Was not sure because I was not familiar with the brand. Have had zero issues. Chose it because the case is narrower than others with comparable power ratings. Purchased a second one.
Jason –
ST625U, great UPS unit for the price, included power monitoring port was exactly what I needed!
This little UPS is really nice for what you pay. 8 outlets (4 with battery backup) and a smallish footprint. I have a cable modem, router, and micro server plugged into the UPS side. We get weather related blackouts here and it’s already gone through one 20 minute one like a champ.It’s incredibly simple to use, just charge it up and plug everything in. Even the monitoring port is a simple plug in, I connected my micro server into the comm port and it automatically recognized it and started monitoring power levels, no extra software required.My current modem/router/micro server set up only has a 12% load on the UPS, which gives me approximately 50 minutes of run time, which is more than enough time for the server to recognize it’s on battery power, stop processes, and safely shut down if it seems like it will take a bit for power to be restored.All-in-all, this was a really good purchase. I’m happy with it and highly recommend.
Amazon Customer –
So far, so good. Easy to set up (did not bother connecting the USB cable) and all seems good so far without any power outages. Outlets well-spaced. Some are surge protected and the other side surge protected and backup battery.
Andrés Villamarin –
Compré este no break por temor que el ps5 se me fuera a dañar en un apagon, hasta el momento ha funcionado con normalidad, de acuerdo a las instrucciones hay que cargar la pila por 8 horas y luego de eso, se conectan los equipos de interés, es importante tener en cuenta los watts que consumen los equipos que deseas conectar, por ejemplo el ps5 puede consumir maximo 250, con eso en mente decides cual se ajusta mejor a tus necesidades
Stephen M. –
I bought this to replace my original which failed after 16 years of use. Does exactly what it is supposed to do and provides backup power to computer equipment, etc.
V3X.℘.Alph∆ –
Had this running for 2 years. Works like a charm. I only plug in small devices: Cable Modem, Switch, NAS (SSD drives). It handles it all and when the power goes out it has never run out of power before the electricity returns — one time power was out for 3 hours.
James –
Just bought two of these due to their higher ratings and while they seem well made and were easy to set up, it’s too early to tell how well they work. One thing I don’t like so far is the stupid beep it makes when power goes out. Like I really need that going off in the middle of the night. I don’t need to be told, that’s why I bought this thing to begin with. The power goes out and my security system and computer are protected. Why do I need to be awakened to be told that?