Hi All

I have managed to get the Sun Pays 4.8kwh batteries to communicate with Growatt inverters. Hope this help somebody.

Use a normal LAN straight throuhg cable. Plug it in on the RS485 port on battery and the BMS port on the inverter. Set dip switch 1 to on, on master battery. Google Jakiper battery monitor software or download Here. It is exactly the same as the sun pays bms software except it has a extra field where you can select the different protocols. select growatt RS485 protocol. On the inverter section 5 select Li and protocol 01. Gives an error 04 for about 20 seconds then it starts communicating.

on the battery there are other protocols as well, so play around with different inverters, you might get it to work on other systems.

I have tested it on the non touch screen version, not sure if it will work on the newer touch screen batteries

4 hours ago, Wilco said:

Hi All

I have managed to get the Sun Pays 4.8kwh batteries to communicate with Growatt inverters. Hope this help somebody.

Use a normal LAN straight throuhg cable. Plug it in on the RS485 port on battery and the BMS port on the inverter. Set dip switch 1 to on, on master battery. Google Jakiper battery monitor software or download Here. It is exactly the same as the sun pays bms software except it has a extra field where you can select the different protocols. select growatt RS485 protocol. On the inverter section 5 select Li and protocol 01. Gives an error 04 for about 20 seconds then it starts communicating.

on the battery there are other protocols as well, so play around with different inverters, you might get it to work on other systems.

I have tested it on the non touch screen version, not sure if it will work on the newer touch screen batteries

Great to see such advice.

Hi thanks for the information

 

I have bought 3 of these batteries and they communicate well with Growatt inverter. My problem is that when I the battery SOC its 100% when fully charged and the FCC is 80% and I get 80Ah of the battery. Does that mean the battery has degraded or this FCC can be increased to 100% and how to do that?

 

Thank you in advance. 

I manage to get the sun pays battery communicating with the sacolar 5000 kwh ( same as growatt spf 5000). Same method as Wilco mentioned. I did not have to change the protocol via jakiper software

I seems like this batteries use the Pace BMS. 

I need more documents on this protocol. I prefer to communicate directly with the BMS via a raspberry pi. If you connect the BMS to the inverter, it over wrights the Absorption charge and float charge voltages.