Pylontech typically distributes this software through authorized distributors and installers. However, several reputable community sources and official support channels provide access: Pylontech access software - Batteries

Open BatteryView. The standard baud rate for most Pylontech units is 115200 or 9600 .

Ensure your USB-to-Serial adapter drivers (often FTDI or CH340) are installed so your Windows Device Manager recognizes a "COM Port." How to Use BatteryView Safely

If there is no Digital Signatures tab, or if it says “The digital signature is not valid,” delete the file immediately. This is the absolute hallmark of a download.