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zsde

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Everything posted by zsde

  1. Can only comment on my experience with Growatt which has been satisfactory for my pure off-Grid system. Have been using the initial Inverter since 2021 and expanded to a second one last year as I was in a similar situation as you, but in my case it was brought about by wanting to be completely off the grid and still run my household without worrying about overload. That requirement has been satisfied. Considering your question and your reported stellar service of your Axpert, I am thinking why you don't consider a second Axpert in parallel, but I am not sure if your model can parallel? Advantage of a second one in parallel is redundancy if ever there was a failure of the Inverter, then you still have 50% of the system to continue operation whilst the failed unit is repaired.
  2. Check Para 3.2 and 3.3 in the user Manual, That may be the settings you envision, where the AC charge function is Disabled. "3.3 AC Charge function Disable: The system will not use AC to charge the battery(except Li ion BMS set force charge flag ) According to Time: During the setting time, system will use AC to charge the battery until battery full and battery will not discharge during the setting time. According to Battery Voltage: During the setting time, system will use AC to charge the battery if battery voltage is lower than AC Charge Start Battery Voltage and will stop when Voltage is higher than AC Charge End Battery Voltage. And battery will not discharge during the setting time. According to Battery SOC: During the setting time, system will use AC to charge the battery if battery SOC is lower than AC Charge Start Battery SOC and will stop when Voltage is higher than AC Charge End Battery SOC. And battery will not discharge during the setting time."
  3. This was a repeat of my instructions from Hubble: "suggested that you discharge the batteries individually to 20% and once both batteries are on 20%, you may link them back up in parallel and let them charge together. This will ensure that both batteries balance from 20% to 100%. "
  4. That seems to be BMS-Test for Windows. Here is a link where the presenter shows where it can be downloaded and how to install. EG4 Electronics seems to be the owner or originator of the software. Whether this software is bespoke from a certain battery manufacturer I don't know. The download link from the manufacturer https://eg4electronics.com/resources/software-drivers
  5. Consider SVolt which are good value and the feedback of those that have them seems to be satisfactory. https://electromannsa.co.za/shop-the-latest-affordable-gadgets-online/svolt-5-09kwh-48v-106ah-lithium-battery/
  6. Suggest you contact Growatt International Rep. He is usually quite quick to respond You can mail or Whatsapp Amos in China +8613267189226 [email protected]
  7. zsde

    Growatt Pinout

    This is the standard Growatt pinout on the BMS CAN port It's a standard LAN cable on mine as it is a 1 to 1 with my battery.
  8. Sorry, I missed the Lithium part. Have you tried contacting them to see which Protocol Growatt or Batrium suggests? Surely with their claims of support and Growatt's quite wide BMS support protocols, there should be an RS485 or Li/BMS CAN protocol that will allow comms. Suggest you contact the Growatt International Rep "Amos Yang". He is on Whatsapp and usually responds quite quickly. Perhaps he can assist in establishing the connection and Protocol for your BMS. His number +86 132 6718 9226 I see on their community forum they talk about athe Pylontech CAN protocol. If that is indeed what they use then the Growatt Li Protocol 52 will be the correct one. You would however still need to get the correct pinout for the RJ45 connector CAN H and L on the battery side to ensure that comms can be established. The normal Growatt CAN RJ45 connector is as follows
  9. Not sure what interaction you expect between Inverter and LA batteries. There is no BMS, so only the battery voltage is read and based on the voltage a rough estimate of SOC is calculated. The Inverter has a USE mode setting which allows you to set the voltages according to whatever your batteries state they should be charged to.
  10. Recommend two in series and then the two series strings in parallel.
  11. Those 550W panels will be in the 40V+ region. Looks like you will have tp connect them 2S 2P.
  12. Consider the Luxpower with the dual MPPT. https://www.inverter-warehouse.co.za/products/solar-select-lux-power-sna5000?pr_prod_strat=jac&pr_rec_id=5088314d7&pr_rec_pid=7501880983801&pr_ref_pid=7769828393209&pr_seq=uniform
  13. Do those batteries have LED indicator lights for the charge level? If so, is that indication also stuck? Yes, your slave battery once targeted as primary stand alone will need to be changed to be the primary via the dip switch.
  14. The SVolt 5kWh batteries are currently very good value for money. @PsyCLown can probably give you his user experience for the time that he has had them. https://electromannsa.co.za/shop-the-latest-affordable-gadgets-online/svolt-5-09kwh-48v-106ah-lithium-battery/
  15. Not quite sure why you would have had a LAN cable issue, unless of course your router was wonky. If a LAN cable has issues then its either the cable or a port issue. As stated, if the WiFi is intermittent, the Network cable will resolve it, and there are enough reports on the Net about Pi and the limited WiFi range.
  16. Had frustrating WiFi connection with my Pi as well. The WiFi on the Pi is not one of it's strong points, unless it's really close. Cable connection sorted that out. Never had an issue since
  17. Split it between the two MPPTs. Your single MPPT usage is the limiting factor.
  18. zsde

    Growatt error 19

    Error 19 means that the Inverter is not even detecting a battery, i.e. Battery disconnected. Have you checked your physical battery connection and measured the voltage at the battery terminals?
  19. Seems like the incorrect Protocol is applied. Which Protocol options were supplied by the battery manufacturer? Which Protocol are you applying? My suggestion would be to switch to USE2 mode and set the voltages according to the battery specs before your battery deteriorates as a result of the high voltages until you can get clarity on the correct Protocol.
  20. Switch it off (isolate) when the info becomes available and indications are that it could potentially affect electromagnetic devices. First indications will be Auroras and we are fortunate that we are not subject to the intensity that centre around the magnetic poles due to our distance from them. The areas that are subjected to this most intensely are at high latitudes closer to the magnetic poles and where the Auroras are visible regularly. Looking at the actuals and the forecasts it is at around the max of the last solar cycle and there is no consensus whether its has peaked already or still has to peak. The two dashed read lines indicate the two lines of thoughts. And some more inconvenient facts and data from the past that NASA and NOAA is trying to destroy by erasing the warm periods from the past and simultaneously erasing the fact that solar activity is actually the driver of climate. Now who would have thought that. https://sunspotwatch.com/
  21. Nothing unusual about that, but unfortunately these historic reoccurring events do not fit into the wanted narrative that wishes to make you responsible for climatic changes. The 11 year solar cycle observations started in the 1700s with solar cycle 1. We are now in cycle 25 and the last three cycles have been getting ever weaker and are actually a repeat of the solar cycles in the 1700s during the Maunder minimum, after reaching the maximums in the 1960s-1980s. That is not to say that there won't be intense CMEs even within weaker cycles. But the bigger cycles that run over a 100 years or more also go from high to low and affect the climate globally. These sunspots affect all shortwave communications daily, but when the intense CMEs occur and are ejected directly towards earth then it starts affecting power grids too.
  22. Such events have taken place. In the 1980s it did affect the North American power grid. "The accompanying geomagnetic storm was so strong that on that same day it caused a surge on the Quebec power grid and knocked out electricity across the entire Canadian province. " https://www.space.com/24983-auroras-1989-great-solar-storm.html
  23. Motor loads vary and that I understand. However when you have a device that draws a constant load, i.e. a globe and you reduce the voltage, then the Amps increase. A good example are computer chips and specifically CPUs. Over the years the voltages for electronic components have been reduced where a typical CPU nowadays runs at 1,5V or less. The frightening part is when you see how the Amps have since shot up where a 100Amps has become quite normal just for the CPU or GPU for that matter. So as the load increases so do the Amps. If the formula of P= V X I is not valid anymore for constant currents then I may be living in the past and would like to be educated.
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