1. What is Battery Ah?

Ah (Ampere-hour) is a unit of electric charge that represents the capacity of a battery. It indicates how much current a battery can supply over a specific time period.

2. How Does the Calculator Work?

The calculator uses the simple Ah formula:

Where:

• \( Current \) — Electric current in amperes (A)
• \( Time \) — Duration in hours (h)

Explanation: The formula calculates the total charge capacity by multiplying the current flow by the time period.

3. Importance of Ah Calculation

Details: Knowing a battery's Ah rating helps determine how long it will last under specific loads, which is crucial for designing power systems and selecting appropriate batteries.

4. Using the Calculator

Tips: Enter current in amperes and 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 measures charge capacity, while Wh (Watt-hour) measures energy capacity (Ah × Voltage).

Q2: How does temperature affect Ah rating?
A: Battery capacity typically decreases in cold temperatures and may increase slightly in warm temperatures.

Q3: Can I use this for all battery types?
A: Yes, the formula applies to all battery chemistries (Li-ion, Lead-acid, etc.), though actual performance may vary.

Q4: How does discharge rate affect Ah?
A: Higher discharge rates often yield lower effective capacity (Peukert effect), especially in lead-acid batteries.

Q5: What is C-rate in batteries?
A: C-rate is the discharge current relative to battery capacity (1C = full capacity discharge in 1 hour).