I have 2 APC SUA1500RM2U units that have served me well for over a decade. They've saved me more than a couple of times over the years. However, I recently saw a youtube video of a guy who converted one of these old UPSes to be a sinewave inverter. In that video, it seems these UPSes consume about 40-50W just sitting idle! I did't measure mine yet, but has anyone looked into this to see how much power is wasted just running the UPS?
And if old UPSes waste a lot of watts, how much better are the newer models? And are there any specific UPSes that are more energy efficient than others?
And if old UPSes waste a lot of watts, how much better are the newer models? And are there any specific UPSes that are more energy efficient than others?