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Amazon Basics UPS Battery Backup & Surge Protector 400VA/255W, 6 Outlets, Standby Uninterruptible Power Supply, for Power Outage Protection, Compact, Black

  • Based on 13,064 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 27
Order within 10 hours and 37 minutes
Available payment plans shown during checkout

Size: Standby


Style: 6 Outlet (400VA)


Features

  • Standby uninterruptible power supply (UPS) with 400VA / 255W battery backup; ideal for home networks, IoT devices, and home entertainment devices
  • 6 outlets total (NEMA 5-15R), consisting of 3 surge-protected outlets and 3 surge-protected/battery-backup outlets
  • Protects electronic devices during a power surge; provides reliable power, keeping devices powered during short outages and powered for long enough to shut down properly during extended outages
  • Small compact size integrates easily into any home or office environment; 5-foot cord with NEMA 5-15P right angle and 45-degree offset plug (120V - 50Hz / 60Hz)
  • Note: Power management software is available for download in the "Product guides and documents" section of this page
  • Note: Please check the total device power consumption when applying battery backup outlet; for optimal system performance, keep the load below 80% of the unit's rated capacity

Description

Amazon Basics From the Manufacturer Amazon Basics

Voltage: 120 Volts


Color: Black


Material: Plastic


Item Weight: 3.8 Pounds


Product Dimensions: 7.24 x 4.33 x 3.22 inches


Item Weight: 3.8 pounds


Date First Available: June 19, 2018


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • What do I do when the battery fails? See my answer.
Size: Standby Style: 8 Outlet (600VA)
The battery backup works fine, and the software gives a pretty good review of its performance. I'm very disappointed that Amazon doesn't offer a replacement for the battery. Of all the batteries Amazon carries, it doesn't offer a replacement battery for its own product. Wouldn't that make sense? These batteries have a short lifespan. Can someone at Amazon tell me where to find a replacement battery? As a follow up to the above review: Since I couldn't find an exact replacement for the battery in my old UPS; I took a gamble and ordered the NPP NP12-5AH battery, also from Amazon. Worked Like A Charm. It fit perfectly in the small battery compartment, charged up real nice, and has my older 600VA running like new. It was also a very reasonable replacement cost wise. Don't let the low cost and country of origin deter you. This is a quality product and I'm lucky to have found it. ... show more
Reviewed in the United States on March 8, 2025 by GerryD.

  • It works great
Size: Standby Style: 8 Outlet (600VA)
The setup was easy. Four of the sockets use the backup power, the other four don't. So I hooked up just the necessary things for backup: My PC, monitor, and router. Then I pulled the plug out of the wall. There was no interruption whatsoever - everything just kept running. It said I had 26 minutes of battery time. So I'll break that down, because so many people want a time estimate. I bought the 600va/360w version. My PC was built to be low power consumption. I estimate it consumes 150w, maximum, and much less when idle. The monitor is a medium-sized 1080p monitor. I am guessing it takes 30w. That's a blind guess. The modem, maybe 15w. So that's less than 200w, and I get 26 minutes running time. Your desktop PC probably uses a bit more power. I'm on a circuit that blows frequently, so I only need a short time while the circuit is reset. So if you're only supporting a router/modem, it should last a very long time. It is apparent to me that many of the unhappy reviewers are need a commercial-grade solution and are expecting much more power and features than this simple, inexpensive UPS has. The unit is rated at 360w. As you approach that maximum, efficiency will drop and your run time will be greatly reduced. Keep it to 200w or less, if you want good efficiency. Don't try putting a 'fridge or a microwave on this little guy. It isn't made for that. A normal laptop might get a few hours out of this. Most desktop PC's use more power than mine does, especially a fancy gaming rig or software engineer's station. If you have a mighty computer, you won't get much more than time to shut it down gracefully. A more modest computer might last 15 minutes or more. Please keep in mind these are my amateur estimates. There is software. Check under the product info on the Amazon page. I forget which tab it is under, but there's a link. Plug the supplied cable into your computer to configure the unit. Install software. It will ask for a username and password. Both are "admin" until/unless you change them. You don't have to use the software. It just lets you tinker with settings and see the battery time and load. Handy for experimenting with different loads. No complaints, it's doing just what I hoped it would do. Hope this review is helpful to some. ... show more
Reviewed in the United States on January 25, 2023 by J. Brown

  • Stopped Working After 2 Years
Size: Line Interactive Style: 9 Outlet (1000VA)
A power line in my neighborhood was rubbing up against a tree causing the power to flicker occasionally. It took our power company weeks to get around to fixing it, so I bought this UPS. It arrived after they finally fixed it, so the power situation stabilized. Still, I was glad I had it even if I didn't need it. Fast-forward 2 years, and a storm knocks a tree into a different portion of the power line, and knocked out power a few times. The UPS kicked on and kept my internet-router working for a bit, but power was out for hours, so eventually the UPS ran out of power. Regrettable, but understandable. But soon, when the power tripped, the UPS would simply shut-down. So all-told this UPS worked fine about 5 or 6 times, and now is just a big heavy power-strip for all the good it does. Folks, if you're trying to save some money by going cheap on a UPS, you're going to end up spending more money on something reliable once this unit inevitably fails, so just skip this POS and get a good one. ... show more
Reviewed in the United States on May 24, 2024 by John D. Frazier

  • Amazon PowerMaster software did not work properly- Used CyberPower software- Works perfectly
Size: Standby Style: 12 Outlet (800VA)
This unit is used for wifi power and voip phone power during a power outage. Charged it up and tested it. It worked fine. The Amazon PowerMaster software had issues so I quite trying to use it and saw another review that mentioned CyberPower. Yep, that brand's units look like mine and the little manual looks the same. I downloaded the Cyberpower software and was able to monitor my unit and do a self test. All is well! ... show more
Reviewed in the United States on March 28, 2025 by jclon123

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