Estimating Battery Requirements
Battery Sizing Worksheet
Use the following worksheet to calculate your battery needs. To ensure sufficient battery capacity, be generous when estimating the operating time per day for each of the loads you will run.
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| Daily |
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| (A) Power | (B) Operating Time | for this appliance |
Appliance |
| Consumption (Watts) | per Day (Hours) | (= A x B) |
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| W | hours | Wh |
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| W | hours | Wh |
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| W | hours | Wh |
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| W | hours | Wh |
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| W | hours | Wh |
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| W | hours | Wh |
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| W | hours | Wh |
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| W | hours | Wh |
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| Total daily | Wh | |
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| x Number of days between charges |
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| = Total | Wh | |
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| Battery Ah used between charges (divide by 10) | Ah | |
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| Recommended Battery Bank Size in Ah (multiply by 2) | Ah | ||
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