Batteries have become an essential part of our daily lives. It seems like everything works on batteries in today’s world. Every electronic device consumes power and batteries are the most portable form of power. Since batteries are used in almost everything we all spend a lot of money on batteries. Choosing batteries is not as simple and not all batteries are the same. If your portable device is used frequently consider using rechargeable batteries, but watch out for chemical compositions allowed by your electronic equipment, as we said: not all batteries are the same.
Modern batteries use a variety of chemicals to power their reactions. Typical battery chemistries include:
Alkaline battery: Used in common Duracell and Energizer batteries, the electrodes are zinc and manganese-oxide, with an alkaline electrolyte.
Nickel-cadmium battery: The electrodes are nickel-hydroxide and cadmium, with potassium-hydroxide as the electrolyte (rechargeable).
Nickel-metal hydride battery: This battery is rapidly replacing nickel-cadmium because it does not suffer from the memory effect that nickel-cadmiums do (rechargeable).
Lithium-ion battery: With a very good power-to-weight ratio, this is often found in high-end laptop computers and cell phones (rechargeable).
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