Typically, a red light during charging indicates that the device is not fully charged yet. However, my understanding of the “red and green” lights on the smart meter information box is that the red light denotes high power use. Our electric has night and day rates (the same price, we used to have economy seven and electricity board. When you wake up your power meter, the light should turn red, green, and blue in sequence, then pause, then flash red 1 to 5 times to indicate the battery level. The average electricity meter features a red LED. It flashes because you're using energy.
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