**What exactly is an ampere hour?**

An ampere hour combines the quantity of current with the time required to completely discharge a battery.

**What is a coulomb ?**

A coulomb (C) is the standard unit of electric charge in the International System of Units (SI). It is the amount of electricity that a 1-ampere (A) current carries in one second (s).

A quantity of 1 C is equal to the electrical charge of approximately 6.24 x 1018 electrons or protons.

**Formula:**

Formula for converting ampere-hours to coulombs:

The charge expressed in coulombs is equal to the charge expressed in ampere-hours multiplied by 3600:

**C = Ah Ã— 3600**

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