The TriMetric TM-2030 is Bogarts new battery monitor. It is a standalone monitor, but it can also work in tandem with Bogarts new SC-2030 charge controller for optimized battery life, capacity use and efficiency. TriMetric TM-2030 is available in two models:TM-2030-RV and TM-2030-A. The TriMetric is used to monitor battery systems used in remote homes, RVs or boats that have batteries that store solar, wind, or possibly generator powered chargers. They will help you maintain your batteries.