The new PentaMetric battery monitor system offers a lot more capability than the TriMetric monitor. The PentaMetric would be the choice for doing system data analysis utilizing a computer. It measures 1 or 2 battery systems with a common negative. With one battery system, battery current plus two charging current sources can be separately measured. Two voltages can be measured. Watts, watt hours and amp hours are also measured. It has a computer interface that can control and read data on a local computer, or also over the internet.