I have not tried pulling the plug with 2 NAS's yet and letting the battery run out, but with one it started the power down at 70% which was after 5 mins of battery time. I don't expect to keep using them when the power goes, I would want both to shut down asap. Besides, I get the same figures as StephenB, I am assuming that each NAS will pull 60W tops. Some HDDs use more than others so giving a bit of leeway. Also, the switch needs to be on the UPS as well, obviously, so that adds a few more watts. At 130W all in, it says 16mins. As far as I can see, that should be fine? Or have I missed something? There is no PC attached to the UPS. I don't care about my PC, only my ReadyNAS.
Just double checked, V2 is connected to V1. Variable changes on V1 are reported on V2. I set the V1 to shutdown at 90% battery and I pulled the plug. V1 started shutdown after 2 mins, and shutdown within 2 mins. However, the V2 didn't budge, even though it correctly knew it was running on battery power. Ideas? Is there a way I can send a test signal? What should the shutdown command be?