How long could the fully charged set of batteries run the refrigerator in the absence of any sunlight?

How long could the fully charged set of batteries run the refrigerator in the absence of any sunlight?
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Batteries and Inverter Typically, a battery is rated assuming a 20-hour cycle. For example, a 160 amp-hour battery would theoretically provide 8 amps per hour for 20 hours. Most solar batteries will provide sufficient current for both a refrigerator and other appliances.
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