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Rechargeable Batteries Essay

667 words - 3 pages

Rechargeable Batteries
What are Rechargeable Batteries?
Dictionary definition of a battery: “a group of two or more cells connected together to furnish electric current; also: a single cell that furnishes electric current.” (MARIUM WEBSTER) With this into consideration, a rechargeable battery is the exact same thing, except that is has the ability to be used and reused for a prolonged period of time. In most instances, rechargeable batteries are referred to as secondary batteries or cells and this is because of the nature of its reversible electrochemical reactions. (CHEMWIKI)
There are two types of batteries, wet cell and dry cells. Wet cell batteries are commonly found in aviation, car ...view middle of the document...

Power density is defined as the maximum practical sustainable power per unit mass or volume and energy density is defined as the amount of energy stored per unit mass or volume. (BRUANGROUP) High power density systems require the battery to be able to support a high rate of transfer of energy in and out of the cell(s), but these batteries could get permanently damaged due to self-heating during the fast charge and discharges which limit the maximum power of the battery High energy density is critical because otherwise, the cell would be too heavy and or large. There are tradeoffs for high density power. It could be improved at the cost of energy density however, the certain applications cannot sacrifice the energy densities i.e. automotive and high power portable tools, power grid stabilization… etc.
Types of Rechargeable Batteries
All batteries come in a multitude of sizes, AA, AAA, C, D and 9-volts. (BLOGBATTERYFORCE)
• Nickel Cadmium (NiCd)
NiCd batteries were the first popular rechargeable batteries and could perform in cold conditions. They are robust and have medium energy density....

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