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CyberPower - 450VA Battery Back-Up System - Black

Model: SE450G1
SKU: 6239405
Sold byBest Buy

Customers are saying

Customers are positive about the product's reliable battery life, excellent overall performance, and compact, user-friendly design. They also appreciate the effective surge protection, competitive pricing, and the convenient number of available outlets. While most feedback is favorable, some users noted minor concerns regarding the lack of USB ports, the device's weight, and occasional buzzing noises.

Generated by AI based on customer reviews.
Features

  • 890-joule rating

    Absorbs a high amount of energy to adequately protect your equipment and prolong the life of the unit.

  • 8 surge-protected outlets

    Safeguard the equipment in your home or office.

  • Integrated circuit breaker

    Ensures electronic equipment protection.

  • 5' cord length

    Offers a variety of placement options.

  • ENERGY STAR certified

    Designed to use less energy and meets strict energy efficiency guidelines set by the Environmental Protection Agency and U.S. Department of Energy.

  • CyberPower $100,000 lifetime equipment guarantee.

See all features
Specifications
  • Brand
    CyberPower
    Model Number
    SE450G1
    Product Name
    450VA Battery Back-Up System
    Color
    Black
    Volt-Ampere Capacity
    450 volt-amperes
    Half Load Maximum Run Time
    6 minutes
See all specifications
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Reviews

Rating 4.7 out of 5 stars with 2007 reviews

5 star rating. 1,618 reviews4 star rating. 275 reviews3 star rating. 44 reviews2 star rating. 13 reviews1 star rating. 57 reviews
95% would recommend to a friend
Customers are sayingCustomers are positive about the product's reliable battery life, excellent overall performance, and compact, user-friendly design. They also appreciate the effective surge protection, competitive pricing, and the convenient number of available outlets. While most feedback is favorable, some users noted minor concerns regarding the lack of USB ports, the device's weight, and occasional buzzing noises.
This summary was generated by AI based on customer reviews.
  • Battery Life (378)
  • Overall Performance (333)
  • Size (174)
  • Surge Protection (152)
  • Price (134)
  • USB Port (7)
  • Weight (6)
  • Noise (5)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    A Great Battery Back-up System

    I bought CyberPower 450VA Battery Back‑Up System in February 2026, and it has already proven to be a solid investment. It’s compact, easy to set up, and perfect for protecting essential devices like my modem, router, and small electronics. What I appreciate most is how quietly and reliably it works in the background. During a brief power flicker last week, it kicked in instantly and kept my internet and equipment running without interruption. The peace of mind alone makes it worth it. The build quality feels sturdy, the indicator lights are clear, and the included surge protection adds an extra layer of safety. For a small home office or anyone wanting basic backup power without spending a lot, this unit delivers exactly what it promises. Highly recommend if you want dependable protection in a compact, budget‑friendly package

    Posted by ChitraS

  • Rated 5 out of 5 stars

    Tiny, but useful

    This device used to be big, but this particular item is really compact. That makes it convenient when you don't have a lot of space under your desk or behind the the entertainment center. Well designed to fit 8 power cords, including those power cords like the apple and Asus king, they are bing in lenght. Maybe not so convenient for those wide power connectors like those from 3.5 external disk. Price is very good, I just hope the small battery included will last long and wont run out of power before the time specified on spec. it can be laid on the floor or hang it to the wall with two screws provided with the package. The cable is very long, make it convenient to reach a power outlet that is far from your equipments.

    Posted by borrachito

  • Rated 5 out of 5 stars

    Battery backup

    Living in an area where the power is unstable at times household appliances can be damaged, this unit is worth its weight in gold when it helps to protect those appliances or even game consoles. The price is small when it protects. I would recommend it and would buy it again.

    Posted by David66

  • Rated 5 out of 5 stars

    A buffer for power outages.

    I like the cyber power battery/surge protector. They have worked good on the multiple installs and protect my equipment in my building which has power outages at times. Computers get more sensitive as they age to a surge caused after an outage. This keeps those computers alive.

    Posted by mtmlrs

  • Rated 5 out of 5 stars

    Good for the value

    Wanted a small backup battery for my home router and modem, to avoid power interruptions when working. Seems to do the job well so far.

    Posted by Spacegamer

See all customer reviews
From the Manufacturer

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Pros for CyberPower - 450VA Battery Back-Up System - Black
Battery Life, Overall Performance, Size, Surge Protection, PriceBattery Life, Performance, Surge Protection, Size, Ease of useBattery Life, Overall Performance, Ease of use, Surge Protection, PriceBattery Life, Performance, Ease of use, Price, Surge Protection
Cons for CyberPower - 450VA Battery Back-Up System - Black
USB Port, Weight, NoiseUSB Port, Noise, Outlet SpacingWeight, Noise, InstructionsNoise, Weight, Alarm, Heat

Specs

Questions & Answers

  • How long is the battery time if this was used to power a 12 watt LED lamp during a power outage Also how long will it store a full charge once unplugged

    Hello DigDug, Thank you for your question. The CyberPower 450VA UPS will supply around 120 minutes for the 12 watt LED lamp. To store the UPS you will need to fully charge the unit overnight, and recharge the battery every three months to ensure optimal battery life.

    Answered by TechSupport
    TechSupport response

  • Does this CyberPower UPS have a USB port?

    Yes, this CyberPower UPS has a USB port.

    This question and answer was generated by AI based on customer and product data.

  • How many surge-protected outlets does this CyberPower UPS have?

    This CyberPower UPS standby system has eight standard outlets.

    This question and answer was generated by AI based on customer and product data.

  • What is the joule rating of this CyberPower UPS?

    This CyberPower UPS has an 890-joule rating.

    This question and answer was generated by AI based on customer and product data.

  • Is this CyberPower UPS ENERGY STAR certified?

    Yes, this CyberPower UPS is ENERGY STAR certified.

    This question and answer was generated by AI based on customer and product data.
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