電荷は物質の基本的な特性であり、電磁場に配置されたときに力を経験させます。クーロン（c）で測定されます。
1 e = 4.4505e-20 mAh
1 mAh = 22,469,432,668,058,747,000 e
例:
15 初等料金をMilliampere-Hourに変換します。
15 e = 6.6757e-19 mAh
| 初等料金 | Milliampere-Hour |
|---|---|
| 0.01 e | 4.4505e-22 mAh |
| 0.1 e | 4.4505e-21 mAh |
| 1 e | 4.4505e-20 mAh |
| 2 e | 8.9010e-20 mAh |
| 3 e | 1.3351e-19 mAh |
| 5 e | 2.2252e-19 mAh |
| 10 e | 4.4505e-19 mAh |
| 20 e | 8.9010e-19 mAh |
| 30 e | 1.3351e-18 mAh |
| 40 e | 1.7802e-18 mAh |
| 50 e | 2.2252e-18 mAh |
| 60 e | 2.6703e-18 mAh |
| 70 e | 3.1153e-18 mAh |
| 80 e | 3.5604e-18 mAh |
| 90 e | 4.0054e-18 mAh |
| 100 e | 4.4505e-18 mAh |
| 250 e | 1.1126e-17 mAh |
| 500 e | 2.2252e-17 mAh |
| 750 e | 3.3379e-17 mAh |
| 1000 e | 4.4505e-17 mAh |
| 10000 e | 4.4505e-16 mAh |
| 100000 e | 4.4505e-15 mAh |
Inayam