Volts To Mah Calculator

Volts to mAh Formula:

\[ mAh = \frac{Volts \times Capacity}{Energy} \]

Volts (V):

Capacity:

Energy (if applicable):

(unitless)

Result (mAh):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Volts to mAh Conversion?

The Volts to mAh conversion calculates the milliamp-hour (mAh) capacity of a battery based on its voltage and energy capacity. This is particularly useful for comparing batteries with different voltages or understanding the actual capacity of power banks and battery packs.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ mAh = \frac{Volts \times Capacity}{Energy} \]

Where:

\( Volts \) — Battery voltage (V)
\( Capacity \) — Battery capacity in Wh (Watt-hours) or Ah (Amp-hours)
\( Energy \) — Energy factor (typically 1, used for specific calculations)

Explanation: The formula converts energy capacity to charge capacity, accounting for the battery's voltage. For Wh inputs, it calculates mAh = (Wh × 1000) / V. For Ah inputs, it simply converts to mAh (Ah × 1000).

3. Importance of Battery Capacity Calculation

Details: Accurate battery capacity calculation is crucial for determining how long a device will run on a battery, comparing different battery types, and designing power systems for electronic devices.

4. Using the Calculator

Tips: Enter voltage in volts, capacity in either Wh or Ah (select the appropriate unit), and an energy factor if needed (typically 1). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert volts to mAh?
A: Converting to mAh allows for direct comparison of battery capacities regardless of their voltage, making it easier to understand how long a battery will power a device.

Q2: What's the difference between Wh and mAh?
A: Wh (Watt-hours) measures energy capacity, while mAh (milliamp-hours) measures charge capacity. Wh takes voltage into account, making it a more accurate measure of total energy.

Q3: When should I use Wh vs Ah inputs?
A: Use Wh when you know the battery's energy capacity (common for power banks). Use Ah when you know the battery's charge capacity at its rated voltage (common for individual battery cells).

Q4: What is the energy factor used for?
A: The energy factor is used in specific calculations where efficiency or conversion losses need to be accounted for. For most standard calculations, this value should be 1.

Q5: Can I use this for all battery types?
A: Yes, this calculation works for any battery type (Li-ion, NiMH, Lead-acid, etc.) as long as you have the correct voltage and capacity values.