Q
does revving the engine help when jumping a car
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Revving the engine of the donor car during a jump-start doesn't directly benefit the dead battery, but it can help in certain circumstances. The primary reason for revving the engine is that it increases the alternator's output, which can provide a slightly higher charge to the dead battery. Modern alternators, however, are designed to produce sufficient power at idle to charge a battery. The real benefit comes from ensuring the donor car's battery doesn't get drained while supporting the dead vehicle. High revs increase the alternator's efficiency, hastening the charging process of the dead battery indirectly. It's wise to rev slightly, but not excessively, to prevent potential damage to both vehicles. Always follow safe jump-starting procedures, ensuring correct cable connections and reading the vehicle's manual for specific instructions.
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