2volt

2volt typically refers to the electrical potential difference of two volts. The volt, symbol V, is the SI unit of electric potential difference and electromotive force. One volt is defined as one joule of energy transferred per coulomb of charge. Therefore, a potential difference of two volts corresponds to two joules per coulomb. In practical terms, 2V is a common way to specify the voltage level of a circuit or device.

In electronics and energy storage, 2V appears in several contexts. Some battery chemistries use a per-cell nominal voltage around 2.0 V; a single lead-acid cell, for example, has a nominal voltage near 2.0 V. Other cell chemistries typically operate at higher per-cell voltages, such as around 3.6–3.7 V for lithium-ion. Voltage levels near 2V may also appear in low-voltage circuitry, step-down converters, or as reference rails in specialized equipment.

The term 2V is also used in labeling and documentation to indicate a potential difference of two volts. In some cases, 2volt or 2V may be encountered as a brand name, project title, or product model, but there is no single widely recognized entity that defines 2volt beyond its use as a voltage value. When encountered, the intended meaning should be inferred from the surrounding technical or branding context. See also volt, electric potential, and battery voltage.