Guide to Rechargeable Batteries

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Kinds of Rechargeable Batteries include the following:

NiCd (nickel cadmium) rechargeable batteries

• NiCd rechargeable batteries have the longest life cycle with over 1,500 cycles.
• However, they have low energy densities compared to the other chemistries.
• Cadmium, the anode element, is toxic to most life forms. It poses a threat to the environment.
• NiCd rechargeable batteries are used mostly in domestic applications.

• NiMH batteries have a hydride-absorbing alloy for the anode instead of cadmium, making them less detrimental to the environment.
• They have two or three times the capacity of NiCd rechargeable batteries.
• Their volumetric energy densities are lower and self-discharge rates higher than Li-Ion rechargeable batteries.
• NiMH rechargeable batteries are used in consumer electronics and hybrid vehicles.

• Lithium ion rechargeable batteries provide high charge densities.
• They are lightweight.
• They do not suffer from the memory effect.
• They are commonly used in camera phones, laptops, rechargeable MP3 players, and most portable and rechargeable digital devices.

• Sealed lead acid rechargeable batteries lower energy densities than the other battery chemistries.
• They are used in alarm systems, vehicles, and uninterruptible power supplies.

Solar power: For energy efficiency and conservation, choose a rechargeable battery that can be charged with solar energy. This type of rechargeable battery has an adapter unit with solar panels.

Performance: For long use and efficiency, choose a Li-Ion rechargeable battery. It has a higher voltage and maintains a charge longer than the other batteries.  

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