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The battery that we use in day to day appliances generates electricity( about 3.5V / 12V) as a result of the electrochemical reaction between the metal and electrolyte ( Sulphuric acid in case of Lead-acid battery). As the reaction goes on , the ions in the electrolyte combine with the metal to form a salt and electrical energy. Once these ions are exhausted, the voltage level becomes very low or nil.

If the battery is a rechargeable one, then the electricity supplied in reverse direction charges the ions in the electrolyte. After sufficient, charging the battery can be used again.

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14y ago
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Wiki User

8y ago

Cells produce electricity because their contents are undergoing chemical reactions. When all the reactants have changed to products, no more electricity can be produced.

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13y ago

Because the power of cell become empty

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Sam Seton

Lvl 2
3y ago

cause it gets tired

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Q: Why does electrochemical cell stop functioning after some time?
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