Battery Run Time Formula:
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The 100Ah battery run time calculation estimates how long a 100 amp-hour battery will last under a specific electrical load. It's a fundamental calculation in electrical engineering and battery system design.
The calculator uses the simple formula:
Where:
Explanation: This formula divides the battery's capacity (100Ah) by the current draw to determine how many hours the battery will last.
Details: Accurate battery run time estimation is crucial for designing reliable power systems, planning backup power duration, and ensuring equipment operates for the required time without interruption.
Tips: Enter the electrical load in amperes (A). The value must be greater than zero. The calculator will compute the estimated run time in hours.
Q1: Is this calculation accurate for all battery types?
A: This provides a theoretical maximum. Actual run time may vary based on battery chemistry, age, temperature, and discharge rate.
Q2: Does this account for battery efficiency losses?
A: No, this is a simplified calculation that doesn't account for efficiency losses, Peukert's effect, or voltage drop.
Q3: Can I use this for batteries with different capacities?
A: This calculator is specifically for 100Ah batteries. For other capacities, use the formula: Time = Capacity / Load.
Q4: What if my load varies over time?
A: For variable loads, you would need to calculate energy consumption (Ah) over time and compare it to battery capacity.
Q5: Should I derate the calculated time for safety?
A: Yes, it's recommended to derate by 20-30% to account for real-world factors and avoid complete battery discharge.