Got them fixed.  Just loosened up the screw at the brake and let the brake line lengthen, then retightened.  Fixed the issue.  But still don't know why both brakes locked up on me just from sitting for a couple of months. 

New Rad ebike owner.  Received my bike a while back and once I got everything together, rode it and it worked great.  That was a few months ago.
Went to try it out again today.  Both front and rear brakes are locked up. Wheels won't turn.  This is with the battery off the bike.  Installed the battery and powered up.  Still locked up.  I suspect it is something simple but don't know what to do to get the brakes to release.  They were turning freely when I last rode it.