Power Metering

Does anyone have first hand knowledge of inexpensive D.C. Power metering,
something that works with watt/hours or amp/hours for use in battery monitoring?
I'd like to have something watching my D.C. to monitor my 12v dc loads as well as the D.C. side of my inverter.
T
something that works with watt/hours or amp/hours for use in battery monitoring?
I'd like to have something watching my D.C. to monitor my 12v dc loads as well as the D.C. side of my inverter.
T
Comments
https://www.solar-electric.com/bogart-engineering-tm-2030-a-battery-monitor.html
~$175 with a required shunt. They do pretty much everthing I need for day-to-day monitoring.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
https://www.amazon.com/gp/product/B013PKYILS
It comes with a shunt, and only measures the current / power / energy in one direction. So you could buy two, put the two shunts in series, and wire one meter to measure when the current is going into the batteries, and one when the current is coming out of the batteries.
The two meter wires should be just like volt meters... Connecting to one shunt should not affect anything.
-Bill