The Kussmaul Electronics Mini Single Bar Graph Display, a dashboard-mounted indicator, which contains 10 LED lights, indicates the vehicle’s battery status from within the vehicle when used with a Kussmaul Battery Charger. The unit comes equipped with High/Low voltage alerts, which indicate when the battery’s voltage is too high or too low by flashing the top or bottom LEDs. Utilizing this display will help to protect and extend battery life through proper use and maintenance, according to the company. Installation is easy as the housing is designed to fit into a standard 1.45” by 0.83” (Carling or Eaton) dashboard panel cut-out. This product is made in the U.S.A. and backed by a three-year warranty.