Also, with the new USB standard, its no longer only 5v, you can now use up to 20v @5A [1]. My laptop that has a USB-C port to charge uses the full 20v.<p>120&#x2F;240VAC 50&#x2F;60hz @ ~12A (steady state draw) is pretty much the only thing people agree on when it comes to consumer power.<p>[1]: <a href="http:&#x2F;&#x2F;www.usb.org&#x2F;developers&#x2F;docs&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.usb.org&#x2F;developers&#x2F;docs&#x2F;</a>