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The formula to calculate Watt-Hours (Wh) from Milliamp-Hours (mAh) and Voltage (V) is:
\[ E (\text{Wh}) = \frac{Q (\text{mAh}) \times V (\text{V})}{1000} \]
Where:
mAh (milliamp-hours) is a unit of electric charge, representing the amount of charge a battery can hold. Wh (watt-hours) is a unit of energy, representing the amount of energy a battery can supply over time. The conversion from mAh to Wh depends on the voltage of the battery.
Let's assume the following values:
Using the formula:
\[ E = \frac{2000 \times 3.7}{1000} \]
\[ E = 7.4 \text{ Wh} \]
The Energy (Wh) is 7.4 Wh.
| Charge (mAh) | Voltage (V) | Energy (Wh) |
|---|---|---|
| 1000 | 3.7 | 3.700 |
| 2000 | 3.7 | 7.400 |
| 3000 | 3.7 | 11.100 |
| 4000 | 3.7 | 14.800 |
| 5000 | 3.7 | 18.500 |
| 6000 | 3.7 | 22.200 |
| 7000 | 3.7 | 25.900 |
| 8000 | 3.7 | 29.600 |
| 9000 | 3.7 | 33.300 |
| 10000 | 3.7 | 37.000 |