How to Connect Fogstar Lithium Batteries to Voltacon Off Grid Inverters
Fogstar Battery BMS Communication With Voltacon Off Grid Inverters
Fogstar lithium batteries include a built-in BMS (Battery Management System) that can communicate directly with Voltacon off grid inverters.
This is commonly used on systems installed with the Conversol 8kW MAX II and Ultra MAX 11kW.
The same approach applies across the 8kW to 12kW range, as the correct protocol setting is
PYL (Pylontech) in Menu 5 of the inverter.
RJ45 Communication Cable
Communication between the Fogstar battery and the inverter is made using an Ethernet RJ45 cable with the pin layout shown below.
Video Guide
Our TikTok videos are a helpful source of information for solar energy enthusiasts:
@voltacon.energy Pairing a FogStar 48V LiFePO4 battery with a Voltacon off grid inverter is simple when it is done correctly. Most battery communication errors are caused by using the wrong BMS cable or incorrect inverter settings. In this video we show how to select the correct BMS protocol on the FogStar battery, connect the proper communication cable, and apply the right battery settings on the Voltacon inverter. Once configured correctly, the inverter and battery communicate flawlessly, delivering stable power, accurate state of charge, and long battery life. Correct setup matters. The right cable and the right settings make all the difference.#solarinverter #OffGridSolar #LiFePO4Battery #offgrid
The official cable approved by Voltacon is shown in the diagram below. If you cannot make one at home, you can contact us and we can prepare one for you.


