What was one of the earliest examples of an electric vehicle charger?

The General Electric arc rectifier was one of the earliest examples of an electric vehicle charger. Developed in the early 1900s, this device was instrumental in converting alternating current (AC) to direct current (DC), which is essential for charging electric vehicles. At the time, it facilitated the charging of early electric vehicles, highlighting the nascent stage of electric mobility and infrastructure development.

The significance of this technology cannot be understated, as it laid the groundwork for the systems used in modern electric vehicle charging. The concept of using rectifiers in charging systems set a precedent for future advancements in charging technology, paving the way for more efficient and accessible electric vehicle charging solutions.

In contrast, the other options represent more recent developments in automotive electrification and charging infrastructure, which became prominent much later than the introduction of the arc rectifier.