What is mean by 650va?
What is mean by 650va? The 650 VA represents the total maximum power of the units plugged into the UPS. The VA stands for Volt-Amp: volts x amps = watts, the more usual power unit. How many hours can 650va ups last? The battery of this unit has 77 volt amp hours, which means it lasts about seven minutes if you're using its maximum load (which reaches 390w.) If you're not using the maximin rated load, the time will vary by the amount of power you're using. Why is my APC battery backup beeping? Your system may emit a series...