efficient PWM charger: increases battery life and improves solar system performance LED indicator for battery status supports 3 battery types: sealed, gel , flooded temperature compensation, automatic selection of charging and discharging settings electronic protections: overload, short circuit, over-discharging, over-voltage, low-voltage, reverse polarity with 5 VDC USB port to charge electronic equipment nominal system voltage: 12 / 24 VDC max. battery voltage to the controller: 32 V rated battery current: 10 A charge circuit voltage drop: discharge circuit voltage drop: self-consumption: temperature compensation: -5 mV / °C / 2 V operating temperature: -35 °C to +55 °C storage temperature: -35 °C to +80 °C humidity: USB-port: 5 VDC max. 1.2 A IP rating: IP20 terminal: 4 mm² dimensions: 120.3 x 67 x 21.8 mm mounting hole diameter: 4.5 mm weight: 102 g (EN)