A secondary battery, also known as a rechargeable battery, is charged by reversing the current flow through it. This process restores the battery to its original, charged state.
Here's a more detailed explanation:
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Charging Process: The essence of charging a secondary battery lies in reversing the electrochemical reactions that occur during discharge. When a battery discharges, it produces electricity through chemical reactions. Charging forces these reactions to run in reverse, replenishing the chemical reactants within the battery.
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Reversing the Current: According to the reference material, the charging process involves reversing the current flow. This means instead of the battery supplying current to a device, an external power source forces current into the battery.
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Restoring the Battery: By reversing the current flow, the chemical compounds that were consumed during discharge are regenerated. This restoration process effectively "recharges" the battery, allowing it to be used again.
