mAh to Wh Calculator
Convert battery capacity from milliampere-hours (mAh) to watt-hours (Wh).
Milliampere-hour to Watt-hour Converter
Common mAh to Wh Conversions
Click on these links to see instant conversions with common values:
Understanding mAh to Wh Conversion
Converting milliampere-hours (mAh) to watt-hours (Wh) is essential for understanding the actual energy capacity of batteries, as Wh provides a more universal measure of energy regardless of voltage.
Conversion Formula
Where:
• Wh = Energy in Watt-hours
• mAh = Battery capacity in Milliampere-hours
• V = Voltage in Volts
Key Concepts
- Milliampere-hour (mAh): A unit of electric charge capacity, commonly used for small batteries. It represents the amount of current a battery can provide for one hour.
- Watt-hour (Wh): A unit of electrical energy, representing the consumption of one watt of power for one hour. It is a more accurate measure of a battery's total energy content.
- Voltage (V): The electric potential difference of the battery.
Typical Battery Capacities (mAh and Wh)
| Device | mAh | Voltage (V) | Approx. Wh |
|---|---|---|---|
| Smartphone | 3000 | 3.8 | 11.4 |
| Tablet | 8000 | 3.7 | 29.6 |
| Laptop | 5000 | 11.1 | 55.5 |
| Power Bank | 20000 | 5 | 100 |
| AA Battery (rechargeable) | 2000 | 1.2 | 2.4 |
Frequently Asked Questions
Why convert mAh to Wh?
mAh only tells you the charge capacity, but not the total energy. Wh provides a more complete picture of a battery's energy content, as it takes into account the battery's voltage. This is crucial for comparing batteries of different voltages.
What is the difference between Wh and kWh?
Wh (watt-hour) and kWh (kilowatt-hour) are both units of energy. 1 kWh is simply 1000 Wh. kWh is typically used for larger energy measurements, like household electricity consumption, while Wh is used for smaller devices and batteries.