Profile: Bogart Engineering is a manufacturer of battery monitors which measure volts, amps and amp-hours for battery systems. Our TM1 battery monitors are used to display volts, amps and the amount of charge left in the batteries, by measuring the ampere hours going in and out of the batteries. Our Pentametric battery monitor system is used to measure watts, watt hours, and amp hours, and it includes computer interface that can control & read data on a local computer and also over the Internet. Our TM-2 battery monitors are designed to fit in a double gang electric box. Our TM2025 battery monitors include minimal data logging which can be useful for a technician to diagnose some common setup or operational problems with battery systems.