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Thanks a ton.

This one seems burnt like hell.

Thanks.

What would be the obvious signs of a bad mc4 connectors then if not melted?

I just checked MC4 connectors and they seemed to be okay. I didn’t unclip them as I aint well versed in doing so. By the look of them, they look okay for now but lets see.

I guess I am gonna call a professional to get this all checked and monitor myself for learning purposes as well.

Sounds exactly like mine. I have all 6 panels connected in series for the max output I believe, that's what my installer told me.

Great, let me get that checked.

As per inverter's design, its meant to support the load first and charge batteries with leftover power provided by the panels. So ideally it should keep supporting the load and ignore the batteries while sufficient PV power is available as I mentioned earlier. My actual problem here aren't my...

I will look into connection and panel individually as well. Would you mind guiding me to which exact bad connections should I be looking at?

Those are lead acid flooded batteries. I discharge them daily to 55% SOC and not less. Maybe batteries are dying but I fail to understand that why weak batteries would cause a drop in PV production on a sunny day with clear skies and zero clouds.

Thanks for your valuable suggestion. I have a pair of 155AH FLA (Flooded Lead Acid; if that's what it means?). Its been one year only since I bought and used them. I have daily discharged them maximum to 24v as its 50% SOC and then later shift load to grid automatically. It shouldn't go bad this...

We have great sunlight with clear skies where I live. You can check the solar radiation here in my city.

I believe you have misunderstood my question unfortunately. My question is related to drop in solar power production when I increase the house load on it and not the battery sir. My battery backups are totally fine as they are one year old only and never discharged under 50%.

For my own knowledge, do you mind sharing why batteries would cause this drop is PV production? For instance, load is around 1300W and the production is around 2200W as its charging batteries simultaneously, but when load starts increasing anywhere above 1400W or 1500W, the PV power drops from...

I got lead acid batteries, mentioned in the thread as well. How come batteries are correlated to pv production?

Hello, I am in dire need of help regarding my system. I have 6x 545 solar panels and a 3.2KW chinese inverter [company: Fronus] with a 24v batteries. It has been 13 months since I installed it and it worked perfectly last year. As I live in Karachi, Pakistan, the weather is pretty hot...