BatteryMole Patented Battery Health Monitor (Car) Patented technology that virtually eliminates unexpected car battery failures After the engine is off for a minimum of 4 hours, engine start times (all cars) & start voltages (most cars) are sampled and displayed Calculates the battery's state of charge after the battery has been at rest for 4 hours Performs a comparative analysis of engine start times and start voltages in order to determine the battery's health Warns of low battery voltage & charge, alternator charging problems, relatively slow engine start times and relatively weak start voltages