Hi GMAC
Thank you for the reply. Will give the EOD soc% a try and see if it works. They currently have only the one battery. The AC Charger is set to 30A so I will leave that as is. Recently they had a breaker failure on the AC input side, which forced them to use the battery and solar only. I saw that with careful consumption they can get through the night with about 30% remaining in the battery. So the idea is that only when the battery falls below 30% the inverter must then use eskom to recharge the battery but only by 10% till the next morning. After which the solar must then recharge the battery.
Would you recommend that I disable the PV&AC take load jointly option? As I'm reading through the SMA 5000 manual but it's exceedingly ching-lish. And its not clear as to what this function does.