This device takes the guesswork out of battery maintenance, and boasts a fully automatic experience from the moment its plugged in.  No buttons or switches.  The microprocessor will automatically detect the battery's type, size, voltage and condition.  Additionally, our latest models feature a built-in LCD Digital Battery Tester that reads the battery's voltage, AMP Output and a Percentage of Charge Bar to show how far along in the Cycle to reach Maintenance Mode (Full) the unit is.  Our Savers are compatible with most battery types, including SLA (Sealed or Flooded), AGM, Gel and Deep Cycle Marine.  The Battery Saver™ uses advanced pulse desulfation technology to restore weak batteries, extending their lifespan and saving you from costly replacements.