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Makes total sense...Thank you!

Is a shunt needed if the charge controller has a display that will be visible in my system?

I have 2 of the Valence U27-12XP batteries and planning on hooking in parallel but had no plans on using a battery protect. Should I, and if so can you explain why? The balance of the system includes 200W solar, a 30a MPPT charge controller and a 2000w inverter (I know the inverter is too large...