Battery Sizing Worksheet
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 watt- |
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| hours needed |
| (A) | (B) | for this |
| Power | Operating Time | appliance |
Appliance | Consumption | per day | (= 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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As your power requirements increase, you may need to use more than one battery to obtain sufficient capacity. Read “Two Batteries Connected In Parallel” to determine whether two batteries are appropriate for the applications you intend to power.
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