Convert Kilocoulombs to Milliampere-hours
Convert Kilocoulombs (kC) to Milliampere-hours (mAh) instantly and accurately.
Conversion Formula
mAh = kC × 277.7777778
About Kilocoulombs
The kilocoulomb (kC) equals 10³ C ≈ 0.278 Ah, used in industrial electrochemistry, large capacitor bank energy calculations, and fault current analysis. Electroplating a 100 cm² nickel layer 25 µm thick requires roughly 2-4 kC; power-factor-correction capacitor banks in substations may store several kilocoulombs. 1 kC = 10⁻³ MC = 10³ C.
About Milliampere-hours
The milliampere-hour (mAh) equals exactly 3.6 C and is the universal capacity unit for portable-electronics batteries. Smartphone batteries range from 3 000-5 000 mAh; AA alkaline cells deliver ≈2 500 mAh; small lithium coin cells for RTC modules are rated 35-225 mAh. 1 mAh = 3.6 C = 10⁻³ Ah.
Quick Reference Table
| Kilocoulombs (kC) | Milliampere-hours (mAh) |
|---|---|
| 1 kC | 277.778 mAh |
| 2 kC | 555.556 mAh |
| 5 kC | 1388.89 mAh |
| 10 kC | 2777.78 mAh |
| 25 kC | 6944.44 mAh |
| 50 kC | 13888.9 mAh |
| 100 kC | 27777.8 mAh |