We have 4 Victron MPPT 75/15 controllers, that normally read approximately the same output per their Solar "Gauge" Icons via the Bluetooth dongle. Today, however, 3 of the 4 are mostly reading "0 watts" while the 4th is constantly showing 44-55 watts. Our new ReLiON battery bank is at 95% SoC, it's a bright sunny day, ~70F, and all 4 panels are receiving the same sunlight with respect to angle, clouds, etc. Periodically, the 3 gauges in question will bump up to 3-8 watts and hang out there for awhile, then fall back to 0. At this moment, for example, #1 = 3 watts, #2 = 4 watts, #3 = 51 watts, and #4 = 5 watts. Please help me understand what's going on.