Get big performance up to 40 amps DC output. Provides a highly reliable 13.6 volts DC range with or without a battery. AC/DC distribution with 4-6 DC and 3-5 AC branch circuits (depending on model). Automatic three-stage charging provides superior 12-volt system performance while maintaining the ideal charge and maintenance of your battery. Output: Absorption 13.6 bolts DC range (includes charging and load); Bulk 14.4 volts DC range; Float 13.2 volts DC range. UL, cUL-Listed. FCC Class B compliant. 12 AMP Dimensions: 10-7/16" x 6-1/6" x 4-1/8" Cut Out.