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I got a copy from Felicity and bought adapter from Amazon and used the cable that shipped with the battery

What bms pc monitor do you use on Felicity batteries?

I current have a Growatt 12k DVM 120A, 150 vdc max input, What would be the best pv string configuration for the attached panels.

45.3 v

I don't think the Felicity bms communicates with the growatt. I programmed mines with user2 battery protocol. Then use high low voltage settings for back to the grid. The 10kw Felicity battery bulk charges to 57.7 but my growatt 12kw sends a battery high voltage at 56 volts

Is this an off grid installation with no grid back up. If it isn't and you have grid backup set the inverter to SbU And your settings back to utility should be higher than low dc cut off voltage.

If there is limited grid and your batteries aren't sufficient for your loads increase pv size to ensure max charge and or add more storage.

Ask Felicity sales for a service technician.