ampere-hour per mole
Molar chargeexact by definition
The ampere-hour per mole is the practical electrochemical form, since batteries and rectifiers are rated in amp-hours rather than coulombs. One ampere-hour is exactly 3600 coulombs, so the factor of 3600 is exact by definition. The Faraday constant in these units is 26.801 A·h/mol.
| 1 | 3,600 |
Where the unit came from
Battery capacity is quoted in amp-hours, so expressing charge per mole the same way lets a designer go directly from an electrode's active mass to a cell's rated capacity. Lithium's theoretical specific capacity of 3860 mAh/g comes straight out of this arithmetic.
One ampere-hour per mole in every molar charge unit
| 3,600 | coulomb per mole (C/mol) | |
| 1,000 | milliampere-hour per mole (mA·h/mol) | |
| 3.6 | kilocoulomb per mole (kC/mol) | |
| 1 | ampere-hour per mole (A·h/mol)this unit |