U1 (disambiguation)

U1 may refer to:

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  U1 (battery technology classification)

  A common shorthand for U1 in the context of certain battery/charger standards and classifications (e.g., automotive or industrial battery variants).

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  U1 (software/version label)

  A generic label used in software and firmware for a particular version or edition (e.g., “U1” build/release identifiers).

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  U1 (model name in consumer hardware)

  A model name such as “U1” used for various consumer electronics devices (e.g., phones, tablets, audio devices) across different manufacturers.