LuxPower and Shoto

Good day,

I need some assistance with configuring communication between my inverter, batteries, and Solar Assistant.

My setup consists of:

• LuxPower SNA 5000 with the latest firmware

• 3 × Shoto SDC10-Box5 batteries

• Solar Assistant running on a Raspberry Pi

The battery bank is connected to the inverter via CAN, and the battery is connected to Solar Assistant using a LAN-to-USB cable connected to the Pi.

Initially, everything was working correctly with a single battery:

• Solar Assistant was configured for USB Serial RS232/485

• Inverter setting Option 3 was set to Lithium

• Manufacturer was set to 2

• All DIP switches were OFF

With this setup, both the inverter and Solar Assistant could read the battery correctly with full details.

The issue started after I added two additional Shoto SDC10-Box5 batteries.

We first connected the batteries with LAN cables according to the manufacturer instructions:

• Battery 1 Port A → Battery 2 Port B etc. I have played around with the order port A or B and it does not seem to make a difference

• DIP switches configured according to the Shoto manual (see below)

• Solar Assistant connected to Battery 1 Port B, as before adding the extra batterry's

SHOTO DIP switch configuration:

With this configuration:

• The inverter reads the battery bank correctly and operates normally

• However, Solar Assistant only detects two batteries

This causes inaccurate reporting. For example:

• The inverter may show a 1 kW load

• But the batteries only show around 666 W discharge because Solar Assistant is not detecting the third battery

Option 2

When I change the DIP switches according to the Solar Assistant instructions, Solar Assistant detects all three batteries correctly, BUT the inverter can no longer communicate with the battery bank over CAN.

The inverter then switches to grid mode and shows Error 00.

Solar Assistant DIP switch configuration:

A third option I tried was:

• Keeping the DIP switches configured according to the SHOTO instructions

• Setting Solar Assistant to read battery information from the inverter instead of directly from the batteries

This setup seems to work properly:

• The inverter operates normally

• Solar Assistant reports the total battery bank correctly

• I had to set inverter Option 3 to Lithium and Manufacturer to 6 for the inverter to detect the bank as 300 Ah

The only downside is that Solar Assistant now only shows the battery bank as a single combined battery and not the three individual packs separately.

Am I missing something in the configuration, or is it normal that I cannot monitor all three packs individually while still maintaining proper CAN communication with the inverter?

Any advice would be greatly appreciated.