Amps to Milliamp Hours Calculator

Amps to milliampere-hours Calculator

Convert between Amps (A) and milliampere-hours (mAh) using time duration.

Basic Electrical Units

Ampere (A)

A unit of electric current measuring the rate of electric charge flow. One ampere equals one coulomb per second.

Milliamp Hour (mAh)

A unit of electric charge that represents the capacity of a battery. One milliamp hour equals one-thousandth of an amp hour.

Conversion Formula

Amps to mAh Calculation

mAh = A ร— Hours ร— 1000

Where:

  • mAh = Capacity in milliamp hours
  • A = Current in Amps
  • Hours = Time duration in hours

Practical Examples

Battery Capacity Calculation

Given:

  • Current Draw = 2A
  • Usage Time = 5 hours

Required Battery Capacity:

mAh = 2A ร— 5 hours ร— 1000 = 10000mAh

Another Example

Given:

  • Current Draw = 1.5A
  • Usage Time = 3 hours

Required Battery Capacity:

mAh = 1.5A ร— 3 hours ร— 1000 = 4500mAh

FAQs

What is the difference between Amps and milliamp hours?

Amps measure the flow of electric current, while milliamp hours measure the total charge a battery can deliver over time.

How do I convert Amps to milliamp hours?

To convert Amps to milliamp hours, use the formula: mAh = A ร— Hours ร— 1000. You need to know the current in Amps and the time in hours.

Why is milliamp hour capacity important?

The milliamp hour capacity indicates how long a battery can power a device before needing a recharge. Higher mAh means longer usage time.

Author

  • Manish Kumar

    Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure. He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.

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