Jeff's InfoSec Blog

Thoughts about information security, privacy, and regulatory compliance. Brought to you by Jeff Newfeld, the product unit manager for security solutions in Microsoft's Core Infrastructure Solutions group.


Charging your smartphone from a 9V battery

  • Comments 4
  • Likes

Just a really cool little hardware hack -- use a 9V battery to emergency charge your USB-charged devices (like my GPS, my other GPS, my smartphone, ...). 

how-to make a ‘usb battery’ - hack a day -
Your comment has been posted.   Close
Thank you, your comment requires moderation so it may take a while to appear.   Close
Leave a Comment