Daniemj

Thank you.
I got the contact details of an installer from ITS Pretoria. Just wanted another option to compare installation costs with...

The uneven discharge did not get better. I bought the batteries from Gary Bowes at Solar and Inverter Warehouse in Meadowdale, Johannesburg. (R13750 each, Vat incl) 
He followed it up with Pylontech but he said they mentioned something about firmware but also that it is within specs. They will take some time before they change it, so he offered to change it for me now. I  wanted a 5th battery so I bought another yesterday (at the same special price) while changing the  problem one for a new one. 
Today was the first morning, and I am happy to see the SOC of all 5 batteries are close to each other! Problem solved, thanks to excellent service from Gary!

The uneven discharge did not get better. I bought the batteries from Gary Bowes at Solar and Inverter Warehouse in Meadowdale, Johannesburg. (R13750 each, Vat incl) 
He followed it up with Pylontech but he said they mentioned something about firmware but also that it is within specs. They will take some time before they change it, so he offered to change it for me now. I  wanted a 5th battery so I bought another yesterday (at the same special price) while changing the  problem one for a new one. 
Today was the first morning, and I am happy to see the SOC of all 5 batteries are close to each other! Problem solved, thanks to excellent service from Gary!

The uneven discharge did not get better. I bought the batteries from Gary Bowes at Solar and Inverter Warehouse in Meadowdale, Johannesburg. (R13750 each, Vat incl) 
He followed it up with Pylontech but he said they mentioned something about firmware but also that it is within specs. They will take some time before they change it, so he offered to change it for me now. I  wanted a 5th battery so I bought another yesterday (at the same special price) while changing the  problem one for a new one. 
Today was the first morning, and I am happy to see the SOC of all 5 batteries are close to each other! Problem solved, thanks to excellent service from Gary!

The uneven discharge did not get better. I bought the batteries from Gary Bowes at Solar and Inverter Warehouse in Meadowdale, Johannesburg. (R13750 each, Vat incl) 
He followed it up with Pylontech but he said they mentioned something about firmware but also that it is within specs. They will take some time before they change it, so he offered to change it for me now. I  wanted a 5th battery so I bought another yesterday (at the same special price) while changing the  problem one for a new one. 
Today was the first morning, and I am happy to see the SOC of all 5 batteries are close to each other! Problem solved, thanks to excellent service from Gary!

The uneven discharge did not get better. I bought the batteries from Gary Bowes at Solar and Inverter Warehouse in Meadowdale, Johannesburg. (R13750 each, Vat incl) 
He followed it up with Pylontech but he said they mentioned something about firmware but also that it is within specs. They will take some time before they change it, so he offered to change it for me now. I  wanted a 5th battery so I bought another yesterday (at the same special price) while changing the  problem one for a new one. 
Today was the first morning, and I am happy to see the SOC of all 5 batteries are close to each other! Problem solved, thanks to excellent service from Gary!

You are limited to 5 modules per stack but can have multiple stacks connected to a busbar. I think with Pylontech you are limited to 40 modules (96kWh).

@SilverNodashi is having an issue at the moment. I don't think it's been figured out yet, but it seems to be isolated events so far.
If you're worried about total capacity, then look at BlueNova. They have smaller module sizes and they recently started to advertise that they have new tech that allows you to parallel a smaller module with a bigger one.
The LFP options in South Africa right now are: Pylontech, Blue Nova, FreedomWon and SolarMD/Mypower24.
The battery I know that allows the most expandability is the Murata batteries. Up to 6 or 7 batteries on a controller (1.2kwh each), up to 16 controllers in parallel. Don't know of anyone selling them locally.