[Faster_is_better]

Sig rig will run about 12-13 minutes on battery, Idle, thats pulling around 280ish watts, the software shows that.

 

[Faster_is_better]

Really you only need like 5 minutes, or less, It will automatically shut down ur pc for you at a specified time, the backup is only their to keep your system running long enough to shut down properly and not just shut off from a power outage. 30 minutes would cost a lot more..