1. What is Battery Capacity?

Battery capacity is a measure of the charge stored by the battery, typically measured in ampere-hours (Ah). It represents how much current a battery can deliver over a specified period of time.

2. How Does the Calculator Work?

The calculator uses the basic battery capacity formula:

Where:

• Discharge Current — The constant current drawn from the battery (in amps)
• Time — The duration of discharge (in hours)

Explanation: This simple calculation gives the theoretical capacity of a battery under ideal conditions.

3. Importance of Battery Capacity Calculation

Details: Knowing a battery's capacity helps in selecting the right battery for an application, estimating runtime, and designing power systems.

4. Using the Calculator

Tips: Enter the discharge current in amps and the discharge time in hours. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Ah and Wh?
A: Ah (ampere-hours) measures charge capacity, while Wh (watt-hours) measures energy capacity (Ah × voltage).

Q2: Does temperature affect battery capacity?
A: Yes, capacity typically decreases at lower temperatures and may increase slightly at higher temperatures.

Q3: What is C-rate in batteries?
A: C-rate is the charge/discharge current relative to capacity (1C = current equal to Ah rating).

Q4: Why is actual capacity often less than rated?
A: Factors like age, temperature, discharge rate, and cycle life can reduce actual capacity.

Q5: How does depth of discharge affect battery life?
A: Shallower discharges generally prolong battery life compared to deep discharges.