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Is It Necessary to Run a Generator Before Storage?

April 5, 2026

Quick Answer

Running a generator before storage is not strictly necessary but can be beneficial for maintaining battery health and extending the lifespan of the battery bank.

Charging the Battery Bank Before Storage

Charging the battery bank before long-term storage can help maintain the health of the batteries and reduce the need for equalization charges when the battery bank is reactivated. A full charge can help prevent sulfation, a common issue that occurs when batteries are stored with a low state of charge. Aim to charge the battery bank to at least 90% capacity before storage.

Equalization Charging for Long-Term Storage

Performing an equalization charge on the battery bank before long-term storage can help mitigate the effects of sulfation and ensure the battery bank remains in good condition. An equalization charge involves applying a high charge to the battery bank for an extended period, usually 2-3 hours, to equalize the voltage between cells. This can be achieved using a dedicated equalization charger or by using the generator to supply a high charge.

Generator Maintenance Before Storage

If you plan to store the generator for an extended period, it’s essential to perform regular maintenance tasks, such as oil changes, filter replacements, and spark plug cleaning. This will help ensure the generator is in good working condition when it’s needed again. Additionally, consider storing the generator in a dry, well-ventilated area to prevent corrosion and water damage.

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