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DannyK

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  1. Thanks For sharing @Louisvdw. I also contacted Pylontech on the subject and their response is that the communication via the CAN bus cannot monitor each battery details but it is possible via the RS485 which is not currently compatible with Victron color Control GX.
  2. Hello all, I don't know if this has been asked before or not but just want to throw it out there if someone can redirect me to previous responses or help with some answers. For the pylontech batteries connected to a Victron Quattro inverter, I can only see the overall battery bank capacity on the color control GX, is there a way out there to view each battery capacity, state of health and other individual battery data? Secondly, has anyone tried integration of their solar installation with any home automation systems such as contronl4, Creston etc? Many thanks in advance. DannyK.
  3. Thanks VisN, I must confess that I did not do the upgrade myself as a DIY. I employed the services of an installer but I insisted on what I wanted. Yes bus bars were used. 2 batteries were connected together to make 3 groups of batteries. So I have 3 sets of cables running to the bus bars. Attached is the graphical representation of my design. 451 Solar Installation Expansion.pdf
  4. The supplier for my new batteries told me that the new batteries were fully charged. So I charged the old batteries to 100% before disconnecting them to ensure there is very little voltage differences between the old and the new batteries when adding them. When I connected the whole 6 banks together with one of the newest ones as the master, I realised that the older 2 batteries were out of sync with the newer ones. It was like the older 2 were not added to the total capacity. I decided I leave them all connected together overnight to see if they will synchronise and balance out. I noticed some improvement the next morning and at the end of the second day all the 6 batteries were all in syn and balanced (All the SOC lights for all 6 batteries blinking together). I believe the batteries' BMS's just need time to balance the internal cells and ensure the same voltage across all the batteries or maybe I was just lucky . Cheers! DannyK.
  5. Hello all, Project upgrade completed successfully. Added 4 extra batteries to make a total of 6 x 3.5KWh batteries. Added extra 420 x 12 solar panels to make a total of 10065W of PV array and also an extra MPPT for the new set of PV array. Everything is working perfectly fine as expected. Below are some pictures from the upgrade. Also want to say a big thanks to @plonkster and others for the advices, tips and insights. Much appreciated.
  6. Hello VisN, Thanks for sharing this very useful information. Also found it very interesting. With this new knowledge, I had to procure the 2m cable packs manufactured by Pylontech to use in my project. I will install them in a couple of days. cheers and keep well. DannyK
  7. The document was actually sent to me by someone at Pylontech earlier this year when I contacted them on how to connect multiple batteries and they reply with the document and some useful tips (which I have now attached) but I felt my question to them was not fully answered, hence my post in this forum. Maybe it was extracted from their full training manual.
  8. Hello Johan, It was sent to me during my research on the subject matter. Are there any concerns with the document? Regards, DannyK
  9. Thanks again Plonkster, you are a superstar. Any other tip to note as I embark on this expansion project?
  10. Thanks a lot Plonkster. The experience and knowledge you share as well as others like you on this forum makes it the best in the world. Appreciate you. 5.Pylon Battery Extention and Replace SOP.pdf Now am sorry because am about to ask more questions. ... So if I connect 2 batteries max it means I have to use a bus bar to connect the other 4, right? I read through the pylontech manual (attached) and I notice they said 8 batteries maxcan be connected per battery group (what does this mean?) lastly, When do I use the ADD dip switches? Many thanks. US3000 Product manual 19BQSV0102.pdf
  11. Hello all, I am a novice when it comes to Solar but I need some advice on expanding battery storage capability. Installed a 5000W PV array less than a year ago over a 8KW Victron inverter and 7Kwh pylontech batteries (2 x 3.5kwh). Now ready to increase battery storage to 21Kwh from 7 Kwh and also add additional PV arrays to take advantage of the 8KW viltron inverter. Meaning I will be adding an additional 4 x 3.5kwh to the battery bank. My questions are: 1). How many 3.5KWh pylontech batteries can I connect together in parallel without making the interconnecting cables too hot and starting a fire? I have heard of cases where people connected 6 ZTE batteries (3.5KwH) together and cables were getting hot and melting. I don't know if this will be the case with the pylontech brand. I will definitely employ the services of a professional to do the job but just like to have an idea of what is to be done before embarking on the project. 2). Can I go above 8KW on my PV Array since my inverter is 8KW without having any issue? Plan is to add additional 3600W or 5600W depending on available space. 3). What other advices or tips can you give me based on my system configuration above. Thank you all in advance. Much Appreciated. Danny
  12. Hello SilverNodashi, could you please link me up with these importers? Am in Johannesburg north. thanks
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