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Battery Capacity Calculator

To use this calculator, just input the daily energy consumption and select the system voltage and number of days autonomy required.
The value returned is the minimum battery capacity expressed in Ampere-hours at the system voltage.

Please note: The results of this calculator are approximate and are based on a maximum depth of discharge of 80%.
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Energy Consumption
Wh/day

System Voltage
V

Autonomy
Days

Minimum Battery Capacity
Ah