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2026. 6. 30. 작업

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Power Inverters as Emergency Generators?

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As your father says, car batteries are designed for a burst of power (the high-current starter motor), not a steady stream. If you're going to use a battery a a general power supply, you need to get a "deep-discharge" battery, as designed for caravans/marine etc usage. Constantly discharging/charging a normal car battery will reduce it's life significantly, so it is best avoided where possible. The time taken to recharge the battery depends on the size of the battery and the size of your alternator, but it will take a lot longer at idle than in normal driving - car alternators are designed to give peak output at normal cruising revs (usually around 3,000rpm). A proper generator will have an engine designed to run at a certain speed, and a generator matched to that speed, so that it is constantly running at peak efficiency.