In the old days you were stuck with a manual strapping bar or tensioner.  Today you can use an actual modern lithium ion battery tool!  The C11 by Golden Bear is a made in USA tool, that uses a brushless 18 volt motor, and standard lithium batteries.  Cordstrap tensioning has never been easier or faster.  This tool is truely a beast!  It pulls more tension then any other tool we have tested.

 (this is a computer generated picture, but similar to real tool)