JohanBar

Thanks guys, will drop the price accordingly.

@Tim003 didn't receive any other feedback from company or powerforum member. I just dealt with it.
Farm we are renting on upgraded to proper system, so the inverter is not needed anymore.

I understand, will do thanks.
Excellent.
Yes I am actually building a 24V battery, I said 12V just to keep the drawing simpel, as I am sure the principles remain the same for longer series strings.
Yes I guess you get what you pay for. Cycling them once a day every weekday will still get me 7 years of use, so I see it as an okay trade-off for what I pay. Also this is my introduction to DIY battery building, so I can spend R7000 in total with BMS in stead of R23k+ to get my feet wet. I do think in 7 years time, available technology would have changed quite a bit.