This visualization plots battery voltage over time using a line chart, with the D3-based Plot API. The data comes from a CSV file containing two columns, "time" and "voltage", loaded using `FileAttachment`. The voltage values fluctuate around 12.5 volts, with a notable dip and recovery pattern visible in the middle of the series. The single line series uses a blue stroke color and is rendered via the `Plot.lineY` mark, with interactive tooltips enabled.