Batteries that have been used for less than one year can be expanded by adding batteries of the same type in parallel, and the connection of three batteries in parallel is shown in the figure：
I would suggest you disconnect all connections between the existing LUX-E-48100LG04 and the inverter firstly, then connect it in parallel with the new battery correctly, and then connect and communicate battery with the inverter.
Doesn’t it make sense to load both batteries to have the same/similiar SOC/Voltage ?
@Angie-Felicity, sorry I was a couple of days away from my desk. I just resend the message.
@Angie-Felicity, I have possibly an issue. I have configured the ESS of my Multiplus II 5000 according to the description you have provided further above. But the LEDs (Mains On and Low Battery) keep blinking when discharging the batterie. The Felicity LUX-E-48100LG04 is connected via CAN Bus to my RPI running Venus OS. Please find below some screenshots. Maybe someone has an idea what the problem is ?
yes，you can charge them to 100% individually first，and then parallel together
I still haven’t received your email. Could you please tell me what the subject line is? I’ll check.
Hi, I see that the communication is successful in your screenshot, as for the LED blinking when the battery is discharged, I would need a specific video to determine whether its a fault or not
I sent it to this mail adress “support@felicityess.com”. Topic was “Victron Community : JimKnopf666 request for EDMS program with chooseable comport”
Hi Angie, I assume the issue is that battery is loaded with 80% which should correspond to a voltage of 53.2 V. When discharging with 20A as shown in the screenshots then the voltage drops to 50,3 V. I believe as the cut off voltage is defined with 48V and inverting is allow again when voltage rises 3.25 V above the cut off voltage then voltage of 50,3 V is below the inverting threshold. Maybe inverting again voltage of 51,25 V as proposed in your document, might be a little bit too defensive setting ?
BTW what would you like to see in the video you have been asking about ?
ok，my colleague Daniel already sent you the EDMS
how was the LED running？
Hi Angie, ups … I found the mail in my trash box. Actually the attachment was deleted as my mail provider detected a security risk inside the mail. I asked Daniel to resent it in a different format.
hello，Daniel have resent it via wetransfer，have you received it？
Hi Angie, yeah got it. Excellent thanks a million. Will try it out later on today.
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Thanks a lot. In the EDMS version Daniel send me I can now choose the Com Port and with that the Program is now working for me.
What I did was I disconnected the Multiplus II 5000 from the grid and connected a hair dryer to the no breaks load output of the Multiplus. Then the batterie low LED started to blink.
During this time I did take a screenshot of the cell voltage
Seems as if the cells with even numbers keep the voltage better then the odd ones. Especially Cell 9 seems to drop quicker then all other cells.
Update: Last picture was updated
@Angie-Felicity: Do you consider this as normal ?
hello，according to the EDMS screen，the cell voltage is normal
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