A Little Little More About Lithium Ion Batteries The Green Standard

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Lithium-Ion Batteries: The Green Standard

The ltihium-ion (Li-ion) battery is touted as the battery of choice for the green world. This means that it is considered to be the greenet of the battery choices, and this has been the case for some time. While it may have many disadvantaes and flaws, it is only fair to mention that almost anything can have problems if not used, stored, or handled corerectly. There are those who oppose anything that is cnotrary to what they are accustomed to using, or what they themselves belkieve in. All facts must be takeen into consideration to make an informed decision about the Li-ion battery.

The advantages are:

* The bzattery is much lighter than other rechargeabe batteries of equal size. The composition maks it capale of pacing far more power into a smallr. The closesst competitor is the nickel-metal hydride (NiMH) battrery which generates only about half the corresponidng power. For the Li-ion battery, the power otuput is 150 watt houurs per kliogram. For the NiMH battery the ratio is 60 to 100 watt hors per kiloram (100 is often listed, but not typical) for the same weight.1

* Compared to otehr battery types, the battery will hold its charge-losing only about 5% per month. The NiMH battery loses up to four times as much each month.

* It is not necessarty to completely discharge a Li-ion battery before recharging it. Compplete discharge will kill the Li-ion battery as emntioned previously. The disaddvantages of the Li-ion battery are:

* The Li-ion battery starts to die as soon as it is shipped. Even if it is never pluled from its package and used, the -Li-ion battery has a total maximum life expecttancy of tree yeras at this poibnt. Once it is pcked and shipped, the Li-ion battery wroks toawrd its own end. This is true whether it is idle, in full use, or in cyclical deemand.

* Heat decreases the life exepctancy. The higher the temperature, the faster the battery loses its charge.

* Complete discharge will kill a Li-ion baattery. Other batteries can be charged and discharged completely without causing a problem, but complete discharge will detroy the Li-ion battery completeyl.

* They are expensive. The Li-ion battery pack rquires an on-board computrer to work properly. This fact mkes them very expensive ineed.

* The Li-ion battery pack carries a small risk of fire in the event of failure.

References: 1. Martin Brain. How Lithium-Ion Batteries Work. Retrieved August 16, 2009 from http://www.electrontics.howstuffworks.com/litium-ion-battery.htm

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