This fall and rise can be quite substantial, especially when a heavy current is flowing, so how can the terminal voltage be used to calculate anything without knowledge of the magnitude of the current involved?.ĭisplay 100 AMP shunt link to M8 Ring terminal 5 m cable. ** Some say that they can calculate the state of charge from the terminal voltage only but, as we all know, the terminal voltage falls when the battery is under load and rises when under charge. It is a true battery monitor, easy to install and excellent value for money. The BM1+ does all this whist consuming a meagre one and a half milliamps. The algorithm includes Peukert's equation to ensure accuracy over a wide range of load currents. This means that, unlike many other systems that rely solely on amp hour integration, the NASA BM1+ never needs to be re-synchronised with the battery. The BM-1 is designed to monitor performance of 12 volt lead acid battery. One based on integrating amp hours over the charge and discharge cycle, the second based on an adaptive internal mathematical battery model.Ī unique feature of the BM1+ is its ability to use information from both algorithms, during the charge/discharge cycles, to continually update its performance. The BM-1 is designed to monitor performance of 12 volt lead acid battery systems with capacities of up to 600 Amp hours. NASA Marine Battery Monitor BM-1 Clipper (12V Dark Grey) for boats & caravans. In fact two separate algorithms are used. The simple display format does not mean the internal software is unsophisticated. A resettable Amp Hour counter is provided for checking the efficiency of the charging system or keeping a track of power consumption and a second input lets the user monitor the voltage of the starter batter. The instrument also warns the user when the charge level is too low so that load can be shed or charging commenced to protect the battery. A simple and intuitive display shows the service battery voltage, charge/discharge current, state of charge, and time to charge/discharge. The BM1+ measures both these parameters and computes the state of charge using a complex, well proven, algorithm. 12V Car Battery Tester, TSV Automotive 100-2000 CCA Battery Load Tester, Auto Cranking and Charging System Test Scan Tool Digital Battery. Pactrade Marine Boat Car RV Portable 12V Battery Meter Alternator Tester. How does it work? The minimum information required to monitor the state of charge of a battery is the terminal voltage and the charge/discharge current **. Automobile 12V Battery Load Tester Car Autocycle Marine Alternator Analyzer Diagnostic Tool.
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