{"id":6733,"date":"2012-03-28T10:38:32","date_gmt":"2012-03-28T14:38:32","guid":{"rendered":"http:\/\/www.schollnick.net\/wordpress\/?p=6733"},"modified":"2012-03-28T10:38:32","modified_gmt":"2012-03-28T14:38:32","slug":"can-i-charge-a-computer-through-its-usb-port","status":"publish","type":"post","link":"http:\/\/www.schollnick.net\/wordpress\/2012\/03\/can-i-charge-a-computer-through-its-usb-port\/","title":{"rendered":"Can I charge a computer through its USB port ?"},"content":{"rendered":"<p>I&#8217;m aware of no computer that can be charged using the USB port. <\/p>\n<p>Part of the reason for this, is that the power capacity of a USB connection is only up to 100 mA (milli-Amperes) at 5 volts, or half a Watt, or about 1\/30 the power needed to actually run a typical laptop these days.  Even the high Voltage ports on a Macintosh only<br \/>\nsupply up to 12 Volts, and 1 Amp.<\/p>\n<p>A Laptop charger typically supplies 19 Volts, and 4.5 Amps, or roughly 90 Watts&#8230;.<\/p>\n<p>As you can see, a dedicated laptop charger is significantly more powerful then the output of a USB port.  And trying to feed that amount of power through a USB port would damage or destroy a USB port&#8230;  <\/p>\n<p>So, the answer would have to be that there are no laptops that can charge through the USB ports&#8230;  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m aware of no computer that can be charged using the USB port. Part of the reason for this, is that the power capacity of a USB connection is only up to 100 mA (milli-Amperes) at 5 volts, or half a Watt, or about 1\/30 the power needed to actually run a typical laptop these <a class=\"read-more\" href=\"http:\/\/www.schollnick.net\/wordpress\/2012\/03\/can-i-charge-a-computer-through-its-usb-port\/\">[&hellip;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[23],"tags":[523,1831],"_links":{"self":[{"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/posts\/6733"}],"collection":[{"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/comments?post=6733"}],"version-history":[{"count":0,"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/posts\/6733\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/media?parent=6733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/categories?post=6733"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.schollnick.net\/wordpress\/wp-json\/wp\/v2\/tags?post=6733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<!-- WP Super Cache is installed but broken. The constant WPCACHEHOME must be set in the file wp-config.php and point at the WP Super Cache plugin directory. -->