An excellent choice for value-priced, high-performance DC charging, the 2000 SP Series uses modern 3-stage charging to deliver the greatest charge when the battery is most able to accept it, prevent overcharging and extend battery life. Ignition protected, and the 40A model includes automatic temperature regulation. Restores up to three banks simultaneously. Allows selection of charging cycles and voltages for lead-acid, AGM, or gel batteries. Other features include the ability to act as a power supply, easy-to-read DC ammeter, corrosion-resistant components and housing and heavy-duty heat sink design. Runs cool and quiet, no RFI/EMI interference. All models meet FCC Class B requirements. Exterior slots allow for easy mounting, not Marine UL Listed. Dimensions: 10A, 15A & 20A 3.7" x 9.5" x 8.2"; 40A 3.7" x 9.5" x 10.5". Made in the U.S.A.