Battery Capacity Calculator Needed
Battery Capacity Calculation Guide
To calculate the battery capacity (in Ampere-hours, Ah) based on the voltage (V), power (Watts), and usage time (hours), you can use the following formula:
Capacity = (Power × Usage Time) / Voltage
Example Calculation
Suppose you have a 12V battery and you want to power a 600W device for 5 hours. The calculation would be:
(600W × 5h) / 12V = 250Ah
This means you would need a battery with a capacity of at least 250 Ah to run the device for that period.
Additional Considerations
- AC Devices: If you are powering an AC device through an inverter, remember that inverters are not 100% efficient. You might need a battery with a higher capacity to account for the inverter’s efficiency loss.
- Safety Margin: It’s always a good idea to include a safety margin in your calculations to ensure reliable operation even if the battery capacity slightly drops over time.
This calculation is directly applicable for DC devices and gives you a baseline for the battery capacity needed.