Convert Milliampere-hours to Attocoulombs
Convert Milliampere-hours (mAh) to Attocoulombs (aC) instantly and accurately.
Conversion Formula
aC = mAh × 3.600000000e+18
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.
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.
Quick Reference Table
| Milliampere-hours (mAh) | Attocoulombs (aC) |
|---|---|
| 1 mAh | 3.6 × 1018 aC |
| 2 mAh | 7.2 × 1018 aC |
| 5 mAh | 1.8 × 1019 aC |
| 10 mAh | 3.6 × 1019 aC |
| 25 mAh | 9 × 1019 aC |
| 50 mAh | 1.8 × 1020 aC |
| 100 mAh | 3.6 × 1020 aC |