I installed a SVolt 48V connected to a Mecer inverter about 9 months ago at my Holiday home in Nelspruit. When I visited there this month the LCD screen on the battery was dead. The battery is functioning 100% and the LED's on top is indicating charge and is working. The BMS must be working as well. 

Anybody have similar experience with this battery?

Good day.

I have a similar issue.

SVolt 5.4kWh 106AH Lithium Ion Battery connected to RCT Hybrid RCT-INF V4 5.6K-48V inverter.

It was working 100% until I tried to connect the battery communication cable to the Inverter. Screen went dead. Battery still functioning 100%, charging, and powering the inverter/load.

When restarting the system by switching the battery off, the screen come back up, but as soon as inverter's relay's kick in, the screen dies. I also removed the COM cable completely for now and set the inverter battery on USER as it was working perfectly fine before.

I figured that when switching off the PV breakers, leaving the PV breakers off and then restarting the battery, it works, and the screen stay on. The moment I switch the PV breakers back on, the screen on battery goes dead again. 

 

Everything work 100%. Charging very well from solar panels, and no issues running the load.

 

To me it feels like things went wrong the moment I tried to connect the COM cable and set the inverter's battery option to Pylon (they say the SVOLT work on Pylon settings) I just have no idea why is it not working when PV is connected and is perfectly fine while PV not connected.

 

Did you ever find the cause / solution to this ?

Anybody else on this forum had a similar experience ?

Your comments will be much appreciated, as this doesn't make sense to myself anymore as well.

Regards

Hi, my screen was replaced under warranty although I had to pay the courier expenses. It wasn’t related to the coms. It just went dead and never came on again. I have a solar assistant which communicates with the inverter. I couldn’t get the battery to communicate with the solar assistant even with some help from the Wattsapp group. I’ve tried multiple cables etc. I also cannot get my laptop to connect. 

Hi Benji. Thanks for the info, sorry for responding so late. I did some further troubleshooting and got a bit closer to my issue. In my case, as soon as I restart the battery, the screen come back on until I switch on the PV breaker. I thought to remove the grounding cable from the battery casing, and the issue was resolved. I figured that there's some AC voltage on the PV input terminals on the inverter while PV is disconnected. I assume that it's also feeding to the battery and causing some issues when the battery is grounded together with the PV generating voltages. I did read on a few forums that it's normal to have some AC on your PV input, some tested and confirmed the same, even on different inverter brands, and others say it should not give out any AC on PV. I'm still not sure. I guess I'll post on this forum and hear what the guys say. 

For the battery communication I also tried many cables, CAN, and RS485 but cannot get it to work. 

I'm struggling to get support from the vendors. I will also ask again on this forum for some help, maybe someone got it working.

Thanks for your response.

Hi,

Did anyone found a solution to the LCD display problem from the SVOLT battery. I am about to connect my SVOLT 51.2V 106AH 5.43kWh A-Grade Wall Mount Lithium Battery SCNN5125 to my KODAK Solar Off-Grid Inverter 5.6kW 48V OGS5.6. Any suggestions how I should approach connecting the BMS cable between the battery and the inverter to prevent any issues.

Any response would be much appreciated. Thank you.

If email is preferred: [email protected]

Hi.

Issue still not resolved. I'm currently running the system without an earth cable. The moment I connect the earth, the screen goes off.

I doubt that it has to do with the BMS cable. But until now I'm still unable to get the BMS connection working. I reached out to both the battery and inverter vendors and did exactly as they said, but still unable to get comms working.

As a start, I will suggest that you set your inverter's battery setting to "User" or manual, enter charging values as per SVOLT battery specs, and from there you can connect your BMS cable and try to get them communicating. Some forums say that the Pylon battery setting should work for the SVOLT. It would be interesting to know if yours work, as the Kodak and RCT are basically the same thing.