Hardekool

We would never require 10kw peak power. Maybe 5-6kw max. The inverters are setup in parallel mode and connected to each other with their parallel communication cables & current sharing cables. I've tried to get information on the internet to determine if it's possible to have the inverters connected to the batteries with a communication cable....no luck with that so far. The only way the inverters can determine the SOC of the batteries at the moment is through the charging/discharging cables, and ja that is quite unreliable I reckon. It's at 50-75% SOC based on the LED indicators according to the manual supplied. It really is a pain in the butt to get info on the Narada batteries. Tried to get in touch with them directly, but seems only the suppliers can make contact with them and hopefully get any info. The only communication ports the inverters have are 1x RS-232 and 1x usb port. The batteries have 1x RS-232 and 2x RS-485 ports. I have connected the batteries to each other with the supplied RS-485 cable according to the manual, but there is no effective way of telling if they are indeed communicating to each other....if that would help the situation at all?? Here is a link to a supplier where the battery manual can be downloaded. (Bigger than 3mb, so cannot attach sorry): https://suministrosdelsol.com/en/lithium-batteries/869-bateria-litio-narada-48npfc100-48v-de-48kwh-.html

Their technicians are clueless! And to get them to come out to site.....don't even want to go there. That's why I joined this forum to get help from people that actually know what's going on and guide me in the right direction. Will upload pics now. **Update** Today at about 7am (second morning after they connected batteries in parallel) the one battery would show 50% SOC and the other 0% SOC with no LED indicators on (according to the battery manual this means the battery went into Dormant Stage). Then after about 3mins the battery that had no LED indicators on would then all of a sudden show 50% SOC and the other one then had no LED indicators on. They alternated between this states a few times until I decided to reset batteries and the inverters. This is confusing the heck out of me....

Good day everyone, Recently had a 10kw system installed by Romic Consulting. They used 2x RCT 5kw inverters with 2x Narada 48NPFC100 batteries. They had the inverters in parallel setup but had each inverter charge it's own battery. Started getting a fault code 72 which after checking everything and getting info online realized the batteries also had to be in parallel. They came out and connected the batteries in parallel (Why they did not do it from the beginning is a mystery?). After the first night in the parallel setup (completely off grid with the system, no connection to eskom) the one battery showed 0% SOC and the other 50% SOC on the batteries LED indicator the next morning. Why? Shouldn't they be on the same SOC because of the parallel setup? So my question is, does the batteries need to be connected to each other with a BMS cable to communicate their SOC and balance effectively? If so, what is the correct way to do it. As there is hardly any info on Narada batteries online and the manual isn't exactly 100% clear on the correct procedures.