ampere hour

ampere hour

Unit whose name includes an SI unit and a non-SI unit accepted for use with SI
Name Symbol Quantity Value in SI units
ampere hour
amp hour
A h electric charge 3600 C


The ampere hour, or amp hour, symbol A h, is a non-SI unit of electic charge, accepted for use with the SI.
One ampere hour is equal to 3600 coulombs.

The ampere hour is derived from the ampere (an SI coherent derived unit) and the hour (a non-SI unit accepted for use with SI).

current × time = charge expressed in SI units
1 A × 3600 s = 3600 A s 3600 C