1. What is Battery Discharge Time?

Discharge time is the duration a battery can supply current before it needs recharging. It's calculated by dividing the battery's capacity (in amp-hours) by the discharge current (in amps).

2. How Does the Calculator Work?

The calculator uses the basic discharge time formula:

Where:

• Capacity — Battery's total charge capacity in amp-hours (Ah)
• Discharge Current — Current drawn from the battery in amps (A)

Explanation: This simple calculation gives the theoretical maximum discharge time under ideal conditions.

3. Importance of Discharge Time Calculation

Details: Knowing discharge time helps in battery selection for applications, estimating runtime, and designing power systems.

4. Using the Calculator

Tips: Enter battery capacity in Ah and discharge current in A. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Is this calculation accurate for real-world applications?
A: This gives theoretical maximum. Actual discharge time may be less due to temperature, battery age, and discharge rate effects.

Q2: What's the difference between Ah and Wh?
A: Ah (amp-hours) measures charge capacity, while Wh (watt-hours) measures energy capacity (Ah × voltage).

Q3: Does discharge rate affect total capacity?
A: Yes, higher discharge rates typically reduce usable capacity (Peukert effect).

Q4: How does temperature affect discharge time?
A: Cold temperatures reduce battery capacity and increase internal resistance, shortening discharge time.

Q5: Can I use this for lithium-ion batteries?
A: Yes, but lithium-ion batteries often have more complex discharge characteristics than lead-acid batteries.