I worked for 40 years in electronics. Cyber Power works quite well. The batteries in them last 3+ years, and they are cheaper than other uninterruptible units. However, Cyber generally lacks features that are common in APC power supplies. (I noticed they are changing and copying popular APC features and holding their prices lower). When Power supplies function well, I like to swap aging batteries for fresh ones. With APC, I had no problems finding the dimensions of their batteries and ordering them. I have some APCs operating for 16+ years, which I consider legendary. Legendary costs more. CyberPower sells for less. I use one 425W to maintain power interruptions from my internet. Light loads are handled well, but my main Peave with CyberPower are two things. 1. "No user installable batteries for the 425." (let me be the judge of that.) That is bull-puppy! The battery dimensions cannot be referenced in their 425 Watt. 2. CyberPower batteries and shipping cost more than buying a new unit. I hate to pitch a functional product in the junk because the battery lived to a ripe old age or faded away. All batteries should be easily located by dimensional searches. (They are not.) I have spent hours wasting away when a battery does the same thing regardless of how you shape it.. Read more

We like these and keep buying them as the old APC ones die off. They are of good quality and last a long time before needing replacing. The plugs are conveniently placed so the plugs with transformers on the ends fit too. a Easy to plug in and use immediately, even though it needs to charge the battery, it'll still work (as long as the power doesnt' go out in the first 8 hours!) Read more

So easy to use and very effective Read more

This has been working great for a number of months. In the country we have many power outages and brownouts. This has been used to save some smaller electronics and has worked great. Read more

The CyberPower 425 VA UPS proves itself as an efficient, reliable, and quiet solution for power protection, suitable for a wide array of devices including Wi-Fi gateways, Macbook Air, QNAP, and even TVs and streaming boxes. The compact size and straightforward setup make it a versatile UPS for any home or small office. With sufficient outlets - four featuring both surge protection and battery backup, and four more with just surge protection - this unit can accommodate a variety of devices. In terms of performance, the CyberPower 425 VA UPS stands out. It responds promptly to power interruptions, ensuring that devices remain powered on and protected. The unit delivers around 90 minutes of power for light loads like a Wi-Fi gateway, invaluable during extended power outages. For heavier loads, such as a Macbook Air or QNAP, it ensures a solid 10 minutes for a safe shutdown, which meets my expectations perfectly. One of the highlights of this unit is its quiet operation. Even under heavy load and during charging, it maintains a low noise level. Furthermore, I haven't experienced any issues with overheating during prolonged usage, testifying to its overall reliability. Lastly, I assume that the power efficiency of the CyberPower 425 VA UPS is adequate, as there have been no noticeable increases in energy consumption since its implementation. Additionally, I have not needed to contact customer service, indicating that the device works well and lives up to its promises. In conclusion, the CyberPower 425 VA UPS is a top-tier choice for anyone seeking a dependable, compact, and quiet UPS for their essential devices. Whether you're dealing with frequent power interruptions or simply want to safeguard your devices from power anomalies, this UPS comes highly recommended. With its stellar performance and reliable operation, I give it a well-deserved 5-star rating. Read more