Most UPS models have their maximum output, rated in volt-amps (VA) or watts (W), right in the name.
But that number indicates only how many watts the UPS can provide—that is, how much gear you can plug in—at once.
The size of an overgrown surge protector, the CP685AVR is small enough to hide in the same corner as your networking gear, and since it has surge protection built in, you’ll have one less thing to buy.
When we tested the Cyber Power CP685AVR alongside its closest competitor from APC, the APC BE650G1 Back-UPS, the Cyber Power lasted longer and stayed truer to its stated rating, but the difference was less than five minutes of uptime on average—59.6 minutes of power versus 55.8.
The similarities between the APC and the Cyber Power don’t end there: Both units have surge protection on all eight outlets, with four of those outlets covered by the battery-backup protection.
The field mostly consists of products from established brands such as APC, Cyber Power, and Tripp Lite, with a few smaller brands sprinkled in.
When you’re deciding what size UPS you need, you’re actually assessing two different things: power output and battery capacity.
A UPS is a similar buffer but for your electricity, in that if your power dips temporarily or goes out completely, anything plugged into the UPS can continue to draw power from the buffer, unaware of a problem.