Built for 36V systems. the ProSport Heavy Duty 20 Plus Global three-bank onboard charger is designed to charge three 12V batteries in 8 to 10 hours. Rated for 20 amps, the ProSport Heavy Duty 20 includes a universal power cord for global use.• Number Of Banks: 3• Application: AGM/ Flooded/ Gel Batteries• Output Voltage: 12 Volt• Input Voltage: 100 To 240 Volt• Ampere Rating: 20 Amp Charging• Number Of Stages: 5 Stage 100 To 240 Volt AC Power Supply 5 Step Fully Automatic 13.6 Inch Length x 7.9 Inch Width x 2.9 Inch Height | Promariner Pro Mariner ProSport Heavy Duty 20 Plus Global Battery Charger