Hello, I have recently installed the BMV702 in an Off-grid solar system in rural DR Congo. But up to now no synchronization has taken place.
I am using a MPPT150/70 to charge 6 12V 220Ah Deep cycle gel batteries, in a 24V system.
So I put Battery capacity at 660Ah. I changed Charged voltage to 28.5 (according to recommendations elsewhere for pure solar systems). Tail current still 4%, at 3 minutes (both unchanged at default values).
I have seen that the voltage reaches and remains at 28.6 no problem. So what could be hindering the synchronization? And what should I do to improve the settings?
Some ideas: Could it be that running charges prevent the sync time or tail current to be optimal? Could it be that the MPPT changes to early from absorption to float hence reducing the voltage?
Kind regards,
Mark