About a year ago... we had a power outage that lasted like 4 minuets and then power was back on.
Before that? I cant even remember. Its gotta have been like atleast 7years or more without a power outage.
4minuets once every 8+ years (in my case).... I wouldnt call it a huge benefit atleast.
That portability is still great though. Playing in bed is comfy!
If the power goes out I have other things I am worried. Gaming is way down on the list.
Helps pass the time during the wait for the power to come back at least.