Bests & Worsts Reviews from Amazon

Per the manufacturer, all of the JNC660's manufactured AFTER May 2010 now have an AUTO CHARGE feature that allows for you to plug the unit into charge and not have to monitor the charging process. This was a very big drawback of this unit prior as noted in one of the 5 star reviews from G.Powers [Looking for the most powerful battery jumper? Read on..., November 21, 2007] However, the other 'dummy proof' features are still not included in this unit (reverse hookup and turning off power to the cables during hookup)