Convert Gigacoulombs to Milliampere-hours
Convert Gigacoulombs (GC) to Milliampere-hours (mAh) instantly and accurately.
Conversion Formula
mAh = GC × 277777777.8
About Gigacoulombs
The gigacoulomb (GC) equals 10⁹ C ≈ 277 778 Ah, representing charge at the scale of global atmospheric electricity or very large-scale industrial electrolysis installations. Earth's global electric circuit maintains an atmospheric charge of the order of a few GC; a 1 GW·h grid-scale energy storage facility holds of order 1-10 GC depending on voltage. 1 GC = 10⁻³ TC = 10³ MC.
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
| Gigacoulombs (GC) | Milliampere-hours (mAh) |
|---|---|
| 1 GC | 277778000 mAh |
| 2 GC | 555556000 mAh |
| 5 GC | 1.389 × 109 mAh |
| 10 GC | 2.778 × 109 mAh |
| 25 GC | 6.944 × 109 mAh |
| 50 GC | 1.389 × 1010 mAh |
| 100 GC | 2.778 × 1010 mAh |