Convert Attocoulombs to Milliampere-hours
Convert Attocoulombs (aC) to Milliampere-hours (mAh) instantly and accurately.
Conversion Formula
mAh = aC × 2.777777778e-19
About Attocoulombs
The attocoulomb (aC) equals 10⁻¹⁸ C, sitting between the elementary charge and the femtocoulomb. It arises in ultra-sensitive charge measurements: single-electron transistors, quantum capacitance probing of graphene and 2D materials, and scanning tunnelling microscopy where tip-sample charge exchange is tracked at this scale. 1 aC = 10⁻³ fC ≈ 6.24 e.
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
| Attocoulombs (aC) | Milliampere-hours (mAh) |
|---|---|
| 1 aC | 2.778 × 10-19 mAh |
| 2 aC | 5.556 × 10-19 mAh |
| 5 aC | 1.389 × 10-18 mAh |
| 10 aC | 2.778 × 10-18 mAh |
| 25 aC | 6.944 × 10-18 mAh |
| 50 aC | 1.389 × 10-17 mAh |
| 100 aC | 2.778 × 10-17 mAh |