This is the second product of this type for me and I think it is a very needed accessory for anyone that insures being able to get your vehicle started in an emergency. Everything about this unit is good except for 2 things that are not as good as my previous unit.but is a matter of getting used to. 1. The charge status of this unit is not shown on a display (50%, 75%, or whatever it is), rather there is 4 small led lights that indicate a rough idea of the charge remaining by lighting up in 25-50-75-full. Also you must monitor the charge status more often to ensure fullness. Otherwise, it's pretty good.,