If you have a laptop, chances are very good and probably by a lithium-ion (Li-Ion). This battery is the application in a variety of consumer electronic devices, including PDAs and mobile phones found. They won a great popularity because of economic and technical reasons, in particular their high charge-weight.
Lithium batteries are nickel-cadmium (NiCd) batteries, which have been used to power laptops and replacednickel-metal hydride (NiMH), which replaced the technology of portable NiCd batteries. They have dominated the market of today's batteries for laptops, because they are much lighter than other types of laptop batteries retain their charge Longer than other technologies, because they do not suffer from memory effect, by the phenomenon. A typical lithium-ion battery has twice the energy density of a standard nickel-cadmium battery. In addition, lithium-ionThe batteries have a voltage of 3.6 volts from single cell to 1.2 volts per cell nickel-cadmium batteries.
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But the disadvantages associated with lithium batteries: the possibility that a defective battery may catch fire in adverse conditions, are susceptible to high temperature environments compared to other battery technologies in their ability to retain their charge, unless you can do when they are completely discharged, and inherit the chemistry of the batteryleads to a deterioration with age than the strong correlation between the battery and charge / discharge cycles of the chemistry of the old batteries. Lithium batteries computers require protection circuits to monitor the battery to charge the battery safely and ensure current and voltage, and require that the temperature of the battery in a safe operating state sector remains to be integrated.
Cylindrical lithium-ion battery cells are typically tubularin shape, similar to the shape of standard batteries alkaline. Multiple cells are encapsulated in a plastic case and the individual cells are delivered in a way to correct the output voltage and to maximize the storage capacity (measured in milliampere-hours) combined. Prismatic lithium ion cells are also available, but are much smaller and are usually devices like mobile phones, where space and weight is an important aspect used.
There are several things that affect the life of aLithium-ion laptop battery. Removing the battery is accelerated by heat, thus saving the battery in a cool, helping to prolong her life. Manufacturers usually recommend a storage temperature of about 60 ° C for long term storage of lithium batteries. These batteries, as already mentioned, does not retain a memory has been partially discharged, it is not necessary because the full discharge cycles. In fact, some motion is to extend battery life. For lithium batterieshave a limited life, such as older battery technologies, but is relatively independent of their charge cycles and is composed primarily because of their age. A typical battery lasts only 2 or 3 years. This is true even when the battery is unused, it is important not to get a replacement laptop battery is ready to buy, should be put into operation.
Lithium-ion chemistry is the force behind today's laptop batteriesmicrosoft wireless keyboard touchpad