Wow, we just retired our Electrolux-TOO-Expensive-NO-Replacement-Battery machine.  This is such a better value.  I give the extra battery pack (removable) and dual charging capacity an A++.  The suction strength is about as expected (65% of a full-size plug-in).  For the lightness, function and price, this is a great value for quick cleanups when you don't want to drag out the full-size unit for just a few crumbs or pet hairs.  The handle is quick plugin or removal.  And on top of all that, I was able to plug the unit in, mount the wall charger, and install the components in 5 minutes.  Good design.