The Masterlink Batman Pro battery monitor provides an accurate indication of the voltage, current, amp-hours and remaining battery capacity displayed as a percentage and as an estimated time. The battery monitor has a built-in microprocessor which calculates the remaining capacity and stores historic data. General specifications Number of battery outlets: 2; service (fully), starter (voltage) Display/read-out: voltage, current, amp-hours, time remaining, battery capacity in %, special battery status events Languages on display: universal Built-in depth: 72.5 mm (2.9 inch) Dimensions: ?� 64 mm, depth 79 mm Dimensions shunt, hxwxd: 87 x 45 x 35 mm (3.4 x 1.8 x 1.4 inch) Weight: 0.15 kg (0.3 lb) Technical specifications Max. Ah capacity: 9999 Ah Supply voltage: 9-35 V Voltage range: 0-35 V Current consumption (backlight off): 8 mA/12 V, 6 mA/24 V Current consumption (backlight on): 30 mA/12 V, 18 mA/24 V Voltage resolution: 0.01 V Voltage accuracy: � 0.3% Shunt specification: 500 A / 50 mV (service set) Current measurement range: 0-500 A Current accuracy: � 0.4 % Battery alarm contact: yes, potential free Remaining time indication: yes Historical data: yes MasterBus compatible: no Connection cable (6-wire) necessary: yes Modular cable necessary: no