This twin pack, plus battery charger is cordless with a lithium ion battery that is recyclable.  Tougher, lighter weight and more compact.  Revlithium  14.4 volt  3Ah  Li-ion  Holds the charge.  EY7440 LN2S   Comes with two carrying cases.

Light weight 3.5 lbs., variable speed/reversible.  Electronic performance monitoring system.   $500.00