**Full name:** ampere-hour

**Plural form:** ampere-hours

**Symbol:** A-h

**Alternate spelling:** amp hr

**Category type:** electric charge

**Scale factor:** 3600

The SI derived unit for electric charge is the coulomb.

1 coulomb is equal to 0.000277777777778 ampere-hour.

Valid units must be of the **electric charge** type.

You can use this form to select from known units:

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ampere-hour to ampere-second

ampere-hour to picocoulomb

ampere-hour to Faraday constant

ampere-hour to coulomb

ampere-hour to ampere-minute

ampere-hour to coulomb [international]

ampere-hour to microcoulomb

ampere-hour to electronic charge