Hi All, Looking to install a DC-DC alternator charger in my camper van through running power in the alternator through the Orion-TR DC-DC Charger. Based off the Orion Charger pic, I’m thinking that its working. That being said, this charge isn’t being recognized on my Cerbo Monitor. As shown in the Cerbo Monitor picture, it isn’t even recognizing DC input as an option. [Orion Charger] [Cerbo Monitor] What’s the fix here? Can I just activate something on the VRM website, or should I plan on changing the wiring? Thanks, Jonathan

More information about your system needed. What other components do you have?

We have a campertruck with Cerbo G, 4 AGM 220V batteries in 24 Volt, Multiplus 5000 24V and 3 380Watt Solar panels. I would like to see charging via Alternator also. In the VRM I do not find the charging today (16 march 2025) We drove for 1,5 hours You can check the data in the VRM portal: VRM portal [image]

Unless you have a shunt immediately downstream of your Argofex you won’t be able to isolate the volts/amps coming from the alternator. Without the shunt, the amps are simply dumped into your system to satisfy whatever loads are there to take up the amps. You will see the alternator amps when the loads have been satisfied and the amps are then put into the battery and your existing shunt will see those amps.

Hard to follow your diagram. In vehicles the negative connections between the engine batteries and house batteries and the chassis ground are at fault and connected wrong. Look at this sketch, you may not have all the devices shown. [Why is my shunt misreading] [image] Shunt / battery monitor not reading the correct SOC/ Amps, missing solar, decreasing daily or other misreading problems DIY This topic covers the SOC / Amps reported by BMV battery monitors, SmartShunts, Lynx BMSs and Lynx Shunts and will just be called shunt below. It is also assumed that the shunt is monitoring the domestic / house / cabin battery bank and not engine start / bow thruster / winch / caravan mover battery banks. The problems may be one or more of the following The SOC decreases daily despite the solar charger or other charger(s) working. The SOC increasing when discharging and falling when charging…

Connecting Orion-TR DC-DC Charger to Cerbo GX

DIY

pwfarnell 17 March 2025 22:22 5

Hard to follow your diagram. In vehicles the negative connections between the engine batteries and house batteries and the chassis ground are at fault and connected wrong. Look at this sketch, you may not have all the devices shown.

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Connecting Orion-TR DC-DC Charger to Cerbo GX

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