Lead–acid batteries are the oldest type of rechargeable battery. The special characteristics of this type of battery is they have a very low energy-to-weight ratio and a low energy-to-volume ratio.Construction: The lead–acid cell can be easily demonstrated using lead plates for the two electrodes. However such a construction produces only around one ampere for postcard sized plates, and for only a few minutes.
Construction:
• The positive plates are the chocolate brown color of lead dioxide.
• The negative are the slate gray of "spongy" lead at the time of manufacture.
• Separators between the positive and negative plates prevent short-circuit through any physical contact.
Applications of lead - acid battery:
• Automotive and traction applications.
• Standby/ Emergency power for electrical installations.
• Submarines.
• UPS.
• Lighting.
• High current drain applications.
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