See battery condition at a glance. Automatically translates voltage into a figure for % of charge. Colored LED scale makes it quick and easy to see battery condition. Different colors signify different percentage of charge while a flashing red LED on the bottom signals low battery, a flashing green on the top float charge, and a flashing red light on the top equalization charge. Includes Velcro strips for mounting, 5' of cable, and battery terminal rings. Specify 12, 24, or 36V. 2" x 4".