Page 3 - Test Results
To evaluate the CyberPower GX950UC, I put it through two tests. First, I measured its battery life in a drain test. In order to do this, I plugged in my desktop computer, two monitors, and all accessories. I turned the RGB LED strip off. At idle, the indicated power draw was constant around 165W. The system shut off after 13 minutes and 6 seconds, which is 36Wh usable. This is 46% of the 78Wh rated nominal capacity, but keep in mind sealed lead acid batteries discharge differently than lithium-ion batteries. Lead acid battery voltage drops almost linearly with capacity usage, whereas lithium ion is pretty consistent until it is nearly discharged. CyberPower rates a full load of 510W on the GX950UC to only last 1 minute, which is 8.5Wh usable. At 50% load, this UPS is designed to last 7 minutes, which is 29.8Wh usable. In this case, we were at 32% load. The lower load translated to higher usable capacity, which is expected.
I also tested the UPS mode to test if the GX950UC's response time was fast enough to sustain connected computers in the event of a power failure. This test was conducted by connecting the GX950UC to a power strip with a switch. The power to the AC will be shut down at random intervals to see if my PC connected to the portable power station will shut down, restart, or otherwise experience interruptions. The GX950UC's rated response time of 8ms was fast enough to sustain power with no issues to the connected devices. It was completely seamless, which is expected of a dedicated UPS.
Overall, the CyberPower GX950UC uninterruptible power supply delivered expected performance across the board in all my tests. Everything functioned pretty much exactly as designed.
Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware
3. Test Results
4. Conclusion
