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What is it that makes a battery rechargeable? How is it different from a regular battery?

User Alxbl
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2 Answers

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The difference between both batteries is that the chemical reaction is reversible with a rechargeable battery: when electrical energy from an external source (e.g., a charger) is applied to the battery's secondary cell, the negative-to-positive electron flow that occurs during discharge gets reversed.
User Maveroid
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Answer:

"A simple battery is comprised of multiple cells attached in series. A cell is made up of three parts: two electrodes (an anode and cathode) in a chemical called an electrolyte. A rechargeable battery is capable of reversing the chemical reaction by forcing a current in the opposite direction."

Step-by-step explanation:

User HyperCube
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