Precision Battery Monitor BMV 600 The essential function of a battery monitor is to calculate ampere-hours consumed and the state of charge of a battery. Ampere-hours consumed are calculated by integrating the current flowing in or out of the battery. Highest resolution: 10mA (0,01A) with 500A shunt. Lowest current consumption: 1mA. Easiest to wire: the BMV-600 comes with shunt, 10 meter RJ 12 UTP cable and 2 meter battery cable with fuse. No other components needed. Easiest to install: separate front bezel for square or round appearance; ring for rear mounting and screws for front mounting.