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ampere hour
Sign in to saveAlso known as amp hour, ampere-hour, A h, A⋅h, Ah
An ampere-hour or amp-hour (symbol: A⋅h or A h, often simplified as Ah) is a unit of electric charge, recommended for use in batteries and electrolytic devices. It has dimensions of electric current multiplied by time and corresponds to the charge transferred by a steady current of one ampere flowing for one hour (3,600 seconds). Thus 1A⋅h equals 3600 A⋅s or 3.6kC (kilocoulombs).
Key facts
- Unit.name
- ampere-hour
- Unit.image
- Duracell rechargeable batteries.JPG
- Unit.caption
- Rechargeable NiMH 1.2 V batteriesTop: AA battery (2500 mA⋅h)Bottom: AAA battery (1000 mA⋅h)
- Unit.standard
- Non-SI metric unit
- Unit.quantity
- Electric charge
- Unit.symbol
- A⋅h
- Unit.symbol2
- A h
- Unit.units1
- SI units
- Unit.inunits1
- 3600 C
via Wikipedia infobox
~3 min read
Encyclopedic overview
5 sectionsContents
- Use
- In other units of electric charge
- Examples
- See also
- References
An ampere-hour or amp-hour (symbol: A⋅h or A h, often simplified as Ah) is a unit of electric charge, recommended for use in batteries and electrolytic devices. It has dimensions of electric current multiplied by time and corresponds to the charge transferred by a steady current of one ampere flowing for one hour (3,600 seconds). Thus 1A⋅h equals 3600 A⋅s or 3.6kC (kilocoulombs).
The commonly seen milliampere-hour (symbol: mA⋅h or mA h, often simplified as mAh) is one-thousandth of an ampere-hour (3.6 C).
Excerpted from Wikipedia’s “ampere hour” article, available under the CC BY-SA 4.0 licence.