Is a battery charger AC or DC?

in Electrical Engineering

1 Answer

A battery charger is typically a DC (Direct Current) device. Here's why:

Batteries store DC: Most batteries (like those in smartphones, laptops, or cars) store energy as direct current (DC).

Charger converts AC to DC: If you're plugging the charger into an AC (Alternating Current) outlet, the charger has an internal circuit that converts the AC from the outlet into DC, which is what the battery needs to charge.

So, while the power coming from the wall outlet is AC, the charger itself turns it into DC for the battery.

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