Backlight on current (50A) 30.0 60.0 mA. Backlight on current (>50A) 80.0 120.0 mA. Current of 50A sampler 0.0 50.0 75.0 A. Preset capacity value 0.1 999 Ah. This Battery Monitor is designed to monitor performance most kind of battery systems with capacities of up to 999 Amp hours.