Hello,
A friend wants to use a 16S/320A (48V) battery in his campervan to power the 230VAC devices. He wants to use a MultiPlus II and Orion smart for his campervan. I noticed that the Orion smart is not available for 48V devices. Is that true? It’s easier to use a 48V battery, because the current will be lower and so the wires will have a smaller diameter. Power loss over the cable is P=I²*R.
So do I need a 24V battery? The battery will be powered by this Orion smart from the dynamo of the campervan (24-28V). Charging power/current is limited! I assume that I have to use the power from the key contact so I twill only be powered when the campervan generates power. Relay with the Orion contact? The other option to charge the battery is by applying AC in to the MultiPlus II. The critical power output will be used to power the AC in the campervan. Is it right that this will also generate power when there is no external AC power is provided?
I suggest 3 setups to him:
- Orion smart. 24V seems to be the maximum voltage. So an 8S configuration and a Multiplus II 24/3000. I don’t like this configuration. The current is double and the power loss over the cable has increased quadratically. So thicker cables are needed. The Multiplus II is a non GX version. It will be initialized with a VE.Direct to USB and a computer. The SoC can be determined by the orion smart app?
- Dali 16S BMS and powerful high performance DC-DC converter 24-58,4V. I saw you can interface the Dali BMS in 250kbps mode with Victron products. Hopefully the Dali BMS can limit the charging current. Where do I find this DC-DC converter? I don’t prefer to use this option. I want to use a smart, since that is needed for a battery. But there is no smart Orion 24/48? I also use a non GX MultiPlus II 48/3000 here. It will also be initialized with a VE.Direct to USB and a computer. Without a GX it’s impossible to determine the SoC?
- Preferred but most expensive. Orion 24/48(not smart, can it charge a 16S LiFePO4?), multiplus II 48/3000 GX and GX touch. Can data also be seen on the phone(Bluetooth perhaps)? Is there a VE.Direct/Victron communication port on the Orion to communicate with the Multiplus II? How does the Multiplus see the charge status of the battery when it is charged with the dynamo? How can I limit the charging current (important!). Shunt resistor? Can I set a certain (power) limit in the Orion?
Any suggestions are welcome. I really prefer a 48V battery (2 and 3) to reduce cable diameter and to avoid power loss. Any recommendations for a 48V setup are very welcome.
Best regards,
Mark
