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My setup: 3x250W panels, epever tracer 4215BN mppt controller (40A), 4x DC12-160 AGM batteries (connected in parallel), inverter connected to batter pack. Location: at summer cabin, so mostly weekend warrior use. Battery specs: cycle use 14.6-14.8V (25C), standby use 13.6-13.8V(25C) Problem...