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Process
Discharge results in spontaneous cell reactions, while recharge results in non-spontaneous reactions.
Anode (negative) is the place of oxidation, cathode (positive) is the place of reduction.
Both recharge and discharge involve electron flow from anode to cathode.
Recharge electrode becomes cathode, and a voltage greater than discharge voltage is applied to overcome internal resistance.
What is it
Stores its reactants but can be recharged
Advantages
Rechargeable, long useful life, cheaper
Disadvantages
Toxic lead, corrosive sulfuric acid, low energy density
Draw one
E˚
2.05V