Spicy Cables

Finally got the whole thing working properly, now pulls 5kw from my generator for hours with no problem. 
The Earth bonding was what was causing the issue as it had a floating earth when disconnected from the grid. 
Once that was sorted out the generator was much happier and I actually doubt that changing the voltage and frequency settings was even required in the end. 
 

This is how I connect to my Shoto battery with seplos bms with the software in the link I gave earlier. This port is usually meant to connect to a PC on the master battery. If you manage to get the seplos software connected then you will know it is a seplos bms at least. Otherwise you will have to go the RS232 route with PBMSTools.
Details on connecting via RS485: 
 
Yeah a normal straight through ethernet cable works, usually they come with the battery so maybe they are laying around somewhere. They need to go from RS485-B on the master to RS485-A on the first slave and then from RS485-B on the first slave to RS485-A on the second slave and so on. That leaves RS485-A on the master open to connect to a PC. If it is a seplos bms then the dip switch settings are also in the google link I posted.

how did I find out that I was delivered with stolen batteries? Well, such batteries are not just simple devices with 2 terminals like car batteries. These are sophisticated systems with built in microprocessor controlled battery management system, with display, keyboard and communication connectors. On the front panel is a warning label: Read the instructions before use. But there was no instruction delivered with the batteries. Not thinking of any bad I visited the website of the manufacturer LEOCH in the attempt to download the instructions. But I could not find them. So I wrote a message to please send me the instructions. The next day I got an answer from the representative agent of LEOCH in South Africa, asking me the serial numbers of the batteries and from whom I bought them. I wondered what the serial numbers have to do with the instructions and I couldn't find any on the equipment. He then explained to me that such battery are stolen from cellphone installations since this type of batteries are exclusively sold to cellphone networks. And that these are shipped with instructions, with communication cable and a software cd. Then I found the following video on internet:https://youtu.be/P2gSsN8NlRg. I immediately requested the Installer JLS-Solar in Voorbay/Mosselbay to take them back and to reimburse the money. He reclaimed them the same day but with reimbursing it went not so fast. Finally he payed back in 2 parts up to R2000. I then bought and got delivered replacement from the official importer Averge Ltd. They are technically the same as the stolen ones but light gray instead black and with slightly changed front panel.