Convert electric charge in milliamp-hours (mAh) to energy in watt-hours (Wh), using voltage.
Formula:
Wh = (mAh × V) / 1000The mAh to Wh Calculator is a powerful tool that helps convert milliamp-hours (mAh), a common unit for battery capacity, into watt-hours (Wh), which measures the actual energy a battery can store or deliver. This conversion is crucial for understanding how long a battery will last and for comparing different types of batteries, especially in consumer electronics, electric vehicles, and solar storage systems.
mAh stands for milliampere-hour. It measures electric charge and tells us how much current a battery can provide over a specific time. For example, a 2000 mAh battery can deliver 2000 milliamps for one hour or 1000 milliamps for two hours.
Wh represents the amount of energy used or stored. It is calculated by multiplying voltage (V) with amp-hours (Ah). Since mAh is a smaller unit, it must be converted to Ah first before using the formula:
Wh = (mAh × V) / 1000
This formula helps determine how much energy (in watt-hours) a battery can store, based on its capacity and voltage.
If you have a 3000 mAh battery with a voltage of 3.7V, then:
Wh = (3000 × 3.7) / 1000 = 11.1 Wh
| mAh | Voltage (V) | Wh |
|---|---|---|
| 1000 | 3.7 | 3.7 |
| 2000 | 3.7 | 7.4 |
| 5000 | 3.7 | 18.5 |
| 10000 | 3.7 | 37 |
| 20000 | 3.7 | 74 |
The mAh to Wh Calculator simplifies battery comparisons by converting capacity into actual energy storage. Whether you're a tech enthusiast, a solar system designer, or simply choosing a power bank, understanding watt-hours helps make informed decisions. Use this tool regularly and check out other calculators on Easy Converters to explore more energy and electrical conversions.
The mAh to Wh Calculator is a powerful tool that helps convert milliamp-hours (mAh), a common unit for battery capacity, into watt-hours (Wh), which measures the actual energy a battery can store or deliver. This conversion is crucial for understanding how long a battery will last and for comparing different types of batteries, especially in consumer electronics, electric vehicles, and solar storage systems.
mAh stands for milliampere-hour. It measures electric charge and tells us how much current a battery can provide over a specific time. For example, a 2000 mAh battery can deliver 2000 milliamps for one hour or 1000 milliamps for two hours.
Wh represents the amount of energy used or stored. It is calculated by multiplying voltage (V) with amp-hours (Ah). Since mAh is a smaller unit, it must be converted to Ah first before using the formula:
Wh = (mAh × V) / 1000
This formula helps determine how much energy (in watt-hours) a battery can store, based on its capacity and voltage.
If you have a 3000 mAh battery with a voltage of 3.7V, then:
Wh = (3000 × 3.7) / 1000 = 11.1 Wh
| mAh | Voltage (V) | Wh |
|---|---|---|
| 1000 | 3.7 | 3.7 |
| 2000 | 3.7 | 7.4 |
| 5000 | 3.7 | 18.5 |
| 10000 | 3.7 | 37 |
| 20000 | 3.7 | 74 |
This calculator is essential for advanced projects, including:
Q1: Can I convert mAh to Wh without knowing voltage?
No, voltage is essential in this calculation because energy depends on both charge and potential difference.
Q2: Is this calculator accurate for all types of batteries?
Yes, as long as the mAh and voltage inputs are accurate, this calculator works for lithium-ion, NiMH, lead-acid, and other battery types.
Q3: Why do airlines list battery restrictions in Wh and not mAh?
Because Wh gives a complete view of total energy stored, which is important for fire safety and transport regulations.
The mAh to Wh Calculator helps bridge the gap between battery capacity and usable energy. Whether you're designing a solar battery bank, purchasing a power bank, or configuring drone batteries, understanding this conversion ensures optimal performance and safety. Bookmark this tool and explore more conversion utilities on Easy Converters to power up your energy decisions with clarity.