Is an AC battery charger effective for charging batteries?

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An AC battery charger can be ineffective for directly charging batteries due to the nature of alternating current. However, incorporating a diode to ensure current flows in the correct direction can make it feasible. A specific circuit example would help clarify the effectiveness of this approach. Overall, while charging batteries with AC is challenging, it can be addressed with proper circuit design. Understanding the role of components like diodes is crucial for successful implementation.
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AC battery charger?

Is there such a thing as being able to charge a battery, using alternating current, or would the sweeps invariably be ineffective in giving a charge to the battery?
 
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As you suspect, that would be ineffective. But adding a diode that conducts in the appropriate direction would probably solve the problem. (We would need to see a specific circuit example in order to give a more definitive answer.)
 

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