Electric charge
Coulombs, ampere-hours, and the elementary charge.
1 Coulomb = 0.0002777777778 Ampere-hour (exact)
Quick table
| Coulomb | Ampere-hour |
|---|---|
| 0.1 | 0.00002777777778 |
| 0.5 | 0.0001388888889 |
| 1 | 0.0002777777778 |
| 2 | 0.0005555555556 |
| 5 | 0.001388888889 |
| 10 | 0.002777777778 |
| 25 | 0.006944444444 |
| 50 | 0.01388888889 |
| 100 | 0.02777777778 |
How this system works
Battery capacity is usually ampere-hours: 1 A·h = 3,600 C. The elementary charge e is defined as 1.602176634×10⁻¹⁹ C exactly, which is why electronvolt conversions are exact in SI.
Base unit: coulomb. Coulomb is SI; Ampere-hour is Metric.
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