sanchuka

8 hours ago, Achmat said:

Follow the pylontech battery balancing procedure before connecting it to the inverter. Also the new battery should be the master battery. 

@Achmatsorry to bother, but I've read/watch two methods for battery balancing.

1) Charge 100%SOC existing Battery Bank and charge separately new Battery(s) at 100%SOC, then connect together with BMS, cables, others.

2) A youtube procedure, which I assume to Discharge my existing Battery Bank to similar %SOC (Green Led Lights) of new Battery(s) and then connect them together as youtube video, before connecting to Inverter.

I'm an Off-Grid user with no AC-Input, so would like to confirm if can be done option 2), or is mandatory follow option 1) procedure (Very Good Sunny Day).

I did not find a Pylontech Official Procedure. Regards! and Thank You!

5 hours ago, Achmat said:

There is no stock here of the older versions as they are discontinued. 

I added a US3000C to my existing bank of 3*US3000B batteries and no issues. 

Thank you! @Achmat, I will go straight forward to US3000C version. Great Forum!!!

Regards!

Hi, I've #3 US3000 from 2020-May manufactured, now I'm planning to expand battery bank. Would you reccomend to change to US3000C or keep buying the same version instead.

Is there a technical advantage really? Read that 95%DoD vs 90% is one perhaps, and for future compatibility issues (different rj cables) being and "end user" with limited experience, is worth it? (In my country they sell them at same price).

I use Victron Inverter, and even don't know how to see cycles number if available.

Thanks, Regards!!!