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Solar Battery Runtime

Estimate battery runtime from capacity, voltage, load, and efficiency.

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ElectroLab AI teaches theory, low-voltage electronics, and planning concepts. Mains voltage, switchboards, fixed wiring, high-current systems, and legal electrical work must only be performed by licensed electricians where required.

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Battery capacity

Battery voltage

Load

System efficiency

Formula notes

hours = Ah x V x efficiency / load W

Battery chemistry, depth of discharge, temperature, and inverter losses can change the result a lot.