Chris Louw

I purchased the Pace RS232 USB to RJ11 cable from SolarAssistant, Loaded BMS Tools HS2.03 (Any PBMS Tools software works)
The ethernet cable used for master and slave is a normal straight-through network cable.

Hello Chris Sadly there are many of these giving problems you can PM me with the serial numbers on the batteries that are faulty and I can try to assist you with the warranty or atleast find out who the supplier was.
I can recommend Freedom Won Greenrich Hubble Lithium these are all established brands that offer relatively decent support on their products and warranties. You can contact us for pricing on these brands however they will not be compatible with the Pylontech batteries.

My voltage was set correct from day 1 . No overcharging and now after 6 years 2 of my 3 batteries are starting to swell . They were all installed on the same day . The cycles are 884 , 772 , 815 . All com cables was installed between batteries . Even the difference in the cycles tells me this is not a good BMS . There is a hell of a alot of these batteries that start to swell on this forum. The system is connect to Sollarassistant and I could see when the first cell was starting to go out of balance . Supplier has disappeared. What is realy a good make of battery.

With my setup 4500 Watt panels is connected to the Voltronic MPPT and 3300 Watt on external MPPT connected to the battery . I run the Voltronic MPPT at a lower voltage and let the external MPPT do the bulk charing . The Epever MPPT have a beter setup system with better control . No voltage overshooting like Voltronic MPPT . I have more useable power and even get the batteries full in cloudy days .

@meetyg I did this preventive maintenance on my Axpert 5 years ago and sofar so good .

@meetyg I did this preventive maintenance on my Axpert 5 years ago and sofar so good .

Technically Yes, but we will overlook it as cells have not been affected. if you ever have an issue with it. Just let me know. And i will assist.
PM me with your whatsapp number and we can assist is you have any issues.

@Pie No problems to charge 3x Pylontech US 3000 batteries with 5 kW Axpert. Use Solarassistant to monitor the state of batteries and monitor and do settings of Inverter remotely. Battery tipe set to User. Float voltage set at 52.5v Using this setup for more than 4 years . No communication between Inverter and batteries. Can also use multiSIB software with Solarassistant cable to check battery .There is a SOP for Pylontech batteries with Axpert inverter. Reduced floatcharge from 53.2v to 52.5v for better battery life suggestion  of @Coulomb

Good evening,
I had word from @TaliaBexhausted wife after a very long day at hospital as the surgery lasted 10 hours. The physician said that the procedure was a success and both clots was removed. He will be in ICU for the next couple of days. He was removed from the ventilator and back on high flow oxygen treatment that is a good sign. Futher as precaution he is receiving anti coagulant medication and antibiotics through iv placed in the main artery in the neck. His brothers and wife has also joined the family today so from here forward i am sure all will be on the up and up. Thanks to all on the forum for rallying your support around him it is much appreciated by the family.
Have a good evening 
Derek.
 

Big mistake and MPPT should go up in smoke using 3 in series. No question about it. Even if it works when switching on it will just be a MB matter of time. 
Will he stand in for the cost when exceeding the specs? 

Axperts have commands to calibrate the battery voltage reading.
There is a very small chance that the Must models use the exact same commands. Axpert details here.
Edit: See next post; it seems that the procedure is vastly different. 

Growatt Inverters have a hidden Program code where the offset of battery and grid for that matter can be adjusted as well.
Press the up and down arrow keys simultaneously. Then enter program code 111
This opens a new submenu with numerous values that can all be offset/adjusted. First one is grid, second one is Battery and then follows a host of other values that I have no clue what they are supposed to adjust. 

@TaliaB100% correct. I once had an IE try to recommend the same to me. I absolutely refused his offer. I told him if you not there physically to carry out the testing of the test report I will get someone who is willing to visit the site. To me this is borderline fraud. 
 

The above is also not lawful! How is the remote friend electrician going to supply a test report if not on-site. COC is not valid without a test report. There is many tests that need to be done before issuing any COC. Attached test report that needs to be completed by an IE or MIE.
2020-TEST-REPORT-GENERAL-Template.pdf

@Scorp007  I run the Axpert with no utility power connection . Setting 12 and 13 is used to control start/stop of a pool pump and geyser . The charging 16 was left on solar/utility. When the load is more than the PV the balance is taken from the batteries . This does not have any effect on the battery charging. Batteries is charged as set on 26 and 27 .

I would think that in a typical load shedding situation, trying to push power into the dead grid would be trying to power at least 1000 homes. Maybe there are only 100 houses on your local transformer, but that transformer is still (I imagine) connected, so you'll try to push power into the distribution system and at least another 10 transformers with 100 houses. That would be indistinguishable from a short circuit. So the inverter should trip on over-current instantly.
I can't think of any plausible scenario where an inverter would literally catch fire, assuming that normal circuit breakers and fuses are in place. Maybe if AC fuses are used to try to protect the battery, and something causes the MOSFETs to short circuit. Something wild on the AC-out could caused the IGBTs to punch through, which has been known to take the MOSFETs with it, shorting the battery. Then the fire could be initiated from the battery cables and PCB conductors, with the AC fuses unable to break the DC arc. There really isn't enough information to go on.

If you get a gain of 15⁰ in the middle of winter you are doing good . The gains will be more summer time . We are offgrid but boost the geyser every day during the winter . During the summer there is a lot of days we dont boost at all .

Also avialable at Communica . Only had good service from them .

Also avialable at Communica . Only had good service from them .

My goto safe stores for gadgets and components
https://www.robotics.org.za
https://www.pishop.co.za/store
https://www.communica.co.za
https://www.diygeek.co.za
And sometimes takealot for vizia power monitoring plugs that can be tasmotised

Just a thought. I was at a small factory complex and saw a trolley, on wheels that held 3 panels. They pushed the panels out of the shop into the sun in the morning and pushed back into the garage at night. Rather clever, I thought.
You will need a decent voltage to test, depending on MPPT specs, so you might have to connect panels in series/parallel to test but 3 panels should cover most MPPTs..
 

Recommended charge voltage on all Pylontech batteries is 52.5v(3.5v/cell).
US 2000 - Charge Voltage: 52,0-53,2 V (52,5V recommended.)  Charge/Discharge Current: (25 A recommended), 50 A max. 
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US 3000 - Charge Voltage: 52,0-53,2 V (52,5V recommended)  Charge/Discharge Current: (37 A recommended), 74 A max
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US 5000 - Charge Voltage: 52,0-53,2 V (52,5V recommended) Charge/Discharge Current: (50 A recommended), 100 A max
 
 

One of those technical staff showed me the wiring they did . Best I have seen in my life .
 

I feel you @Derek3 but i can say 1 thing about the good old days these youngsters dont know about is the way things was done with integrity. I am not  ashamed  to say i was part of "Spoorweg" South African Railway Services" top notch in our day's.. As i remember correctly at first 1995~ Telecommunications was stationed in Braamfontein and Electrical(Dc) and Signals in Langlaagte. The training was done in  Esselenpark and Koedoespoort. It was called " School of Rail" proud to have been part of it"

Depending on location but in Gauteng this time of the year like today your panels can deliver about 12 kWh per day if you use ALL the PV. 
Now it's a matter of finding out why you only yielding/using 7 kWh per day. 
I have only 2.5 kW string and expect to get 11 kWh from PV using ALL my PV.