Syed

Hi Coulomb, Thanks for your detailed suggestion. I will try this with my installation. Now can you tell me the below phennmenon are for the same bug? 1. When the CC is not charging full and assuming to be in Float, when a load is turned on it starts feeding current from the panel. 2. Among the two MPPT one gradually dies and then the other, not simultaneously. Everyday I down load the log and find, on MPPT is 0A at around 11:AM in the morning while the other MPPT continues with somewhere around 10-12A till 12-1PM.

My batteries are OPzS 2V blocks. Actually I dont understand why AXPERT Cant push enough current where as Outback FM 80 on the same system psh charge current at expected rate. Is it, there are 2 Panels in series and the voltage is not enough? or its the AXPERT CC itself that ca not push current when the batteries are little charge 60%-70% and develops internal resistance as usual?

Hi KLEVA, This forum is terrific. Thanks for your time and effort clarifying lot of things and still looking further... Actually I have tried charging the batteries just putting an external charge controller Outback FM80 in between the battery and SCC and instantly he charging current is as expected and charges the battery bank whole Sun Day

Hi Guys, I am in a complete mess with one of my project. In the morning the MPPT charge COntrller does charge 1-2 hours and then it goes to float and not charging. The battery SOC shows 80%+ where as the Sp. gravity is not relevnat to 80% SOC. My batteries are dying every day running 10-20 mins of load. can anyone help me out Axpert Setup file.xlsx