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Re:Solid-state battery startup claims breakthrough for elect... by p1mrx on Tuesday September 11, 2018 @10:14PM (#17965093)
> standard 110v or 220v outlets

That isn't the standard, at least not in North America (120V/240V) or Europe (230V):

https://en.wikipedia.org/wiki/Mains_electricity_by_country

Re:Solid-state battery startup claims breakthrough for elect... by cptskippy on Wednesday September 12, 2018 @05:05AM (#17966710)
Those are nominal rms values, the range is plus or minus 10%.

I am not sure where it comes from but in the US it's not uncommon for supplies to be referred to as 220/110 rather than 240/120. They're generally understood to be the same thing.

Re:Solid-state battery startup claims breakthrough for elect... by InclinedPlane on Tuesday September 11, 2018 @10:38PM (#17965198)
"110" or "220" are legacy terms for mains voltages in the US, they are still in common use.