Video narration
Does your charger send wall electricity straight into your battery? No. Power leaves the outlet as high-voltage AC, alternating current. Inside the adapter, it becomes low-voltage DC, direct current, and is regulated before moving through the cable. But the charger is not just a pipe. Once power reaches your phone, its charging circuitry controls how the battery receives it. The battery stores energy chemically. So, does it send wall power straight in? No: it converts wall power into safe, controlled power, then your phone controls how the battery stores it.