A wet-cell battery is the original type of rechargeable battery. It is commonly found in aviation, electric utilities, energy storage and cellphone towers. The battery contains a liquid electrolyte such as sulfuric acid, a dangerous corrosive liquid that damages what it comes into contact with. A dry-cell battery does not contain liquid. Smaller dry-cell batteries, such as alkaline or lithium ion, are typically used in portable electronics, such as toys, phones and laptops.
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