The link to Xantrex LinkPRO Battery Monitor has been copied
These premium battery monitors let you read your battery bank like a fuel gauge. Display voltage, charge and discharge current, consumed amp-hours, and remaining battery capacity. Internal programmable alarm relay can run a generator when needed or turn off devices when battery voltage exceeds programmable boundaries. Utilizes high-performance measuring circuits to precisely define the amount of battery energy available, taking into account battery age, discharge current, and temperature. Using a clear backlit LCD display and intuitive user interface, all parameters can be recalled with just the press of a button. Second battery input monitors voltage on a second battery. Splash-proof front panel. 500-amp shunt included. CE and e-mark certified. Measures currents up to 10,000 amps. Also displays time remaining of your battery bank. Stores wide range of history/events in internal memory. Communication/expansion port. Battery temperature sensor input.