My old VA (Volt-Amp) meter on my ’97 Rexhall Rexair never displayed the correct current reading. In addition to that, the ‘charging’ light was always lit so I never really knew whether the batteries were charging or discharging.
![](https://allviewbees.com/wp-content/uploads/2024/02/IMG_8552-768x1024.jpeg)
In addition to that, the old battery shunt was damaged. I may have done it myself, but I do know it was bent out of shape.
![](https://allviewbees.com/wp-content/uploads/2024/02/IMG_9860-768x1024.jpeg)
In order to address both of these issues, I decided to add a Renogy Core One and Renogy Shunt 300 to my DC power system. Since I already upgraded my solar panels and controller to Renogy, this seemed like the logical choice. See THIS post about the solar panel installation.
I made a wood block and stained it to match the trim since the Renogy Core One was too large to fit where the old VA meter was.
![](https://allviewbees.com/wp-content/uploads/2024/02/IMG_9855-1024x768.jpeg)
The Renogy Core One also provides leveling information that is sent via bluetooth to my iPhone. Definitely a great feature since I don’t have automatic levelers like most of the Rexhalls do.
![](https://allviewbees.com/wp-content/uploads/2024/02/IMG_9864-473x1024.png)
I moved the shunt location next to my inverter which is under the front dinette bench directly above the battery compartment. I had to drill a hole for the 2/0 negative battery cable. The motorhome already had existing cables which I used for the other connections. The red wire is Coach Battery Positive, and the green wire is Chassis Battery Positive. The black wire is a thermistor wire to monitor battery temperature. The orange/white wires provide amperage information to my dashboard VA meter.
![](https://allviewbees.com/wp-content/uploads/2024/02/IMG_9854-768x1024.jpeg)
After the physical installation, you can set the parameters to match your system. I have 4 6v flooded batteries rated at 230ah each, so my total ah at 12 volts is 460. The SOC voltage for my batteries is 12.84 volts, so this is the parameter I used for that. I discovered that my parasitic draw on my rig is 500ma. The solar panel easily makes up for this even on cloudy days.
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