Lithium ion batteries are lighter, stored more energy and retain the cargo longer than a similar-sized nickel batteries. Furthermore, the lithium ion batteries can be loaded before that to download completely, since they do not suffer the effect of memory load. A 6 cell lithium ion Dell latitude d630 battery takes between 2.5 to 3 hours to load completely, to a maximum voltage with the system off. Once the battery is loaded completely, the flow of current to the battery stops thanks to an integrated circuit protection (load control). Protection circuit prevents the battery load or download beyond safe limits. Although the protection circuit uses a small amount of battery power to operate, the rate of self-discharge of lithium ion battery is a fraction of the rate of nickel rechargeable batteries. Some conditions that increase the rate of self-discharge of lithium ion batteries, and to avoid, are described in the section what is the capacity of the battery? of this document. What is the life cycle of the battery?

The life cycle of the Dell inspiron 14 battery is the total amount of cycles of loading and unloading (Figure 1) that supports a battery before becoming unable to upload a useful amount of energy. It is difficult to estimate the life cycle of a rechargeable lithium ion battery, as it is affected by the temperature of the average performance of the battery and its rate of discharge of energy. Basically, higher rates of discharge of energy and higher temperatures reduce the life cycle of the battery. The battery operating temperature depends on the temperature of the air, and also of the heat generated by the same team and its immediate surroundings, as a basis for coupling. The rate of discharge of energy (drainage) depends on the type of applications that run on your laptop and your power management settings. For example, run applications like CAD, games and movies on DVD empty battery faster and reduces its life cycle than when running Word processor applications.

A cycle for a rechargeable lithium ion Dell inspiron 15 battery is the cumulative amount of download roughly equal to its full charge capacity. For example, 10 events in a depth of discharge of 10 per cent or 2 events of a depth of discharge to 50% represent a cycle. What is the capacity of the battery? The battery capacity is expressed in ampere-hours (Ah). The energy of the battery, expressed in Watt-hours (Wh) is the product of the capacity of the battery (Ah) and the battery voltage (V). The rank of a lithium ion battery operating voltage remains relatively constant throughout his life; However, his ability begins to decrease in a linear mode as soon as it becomes operational. New batteries are classified by their nominal capacity.

With the passage of time, the actual battery capacity decreases due to electrochemical deficiencies within each cell. This loss of capacity (aging) is irreversible; You cannot restore through the cycle of loading and discharging of the Sony vgp-bps9/s battery. Gradually, it has less active material within each cell to store a charge on electrochemical form. As a result, the user experiences a reduction in the time of use of the equipment. A practical way of expressing the real capacity of a battery with the passage of time is called Total load capacity (FCC). FCC is expressed as a percentage of the initial rated capacity of the battery. Both the typical resistance of battery discharge and the user profile influence the FCC. With a resistance of normal discharge lithium ion batteries have a shelf life of between 300 and 500 cycles. With moderate use, it is estimated that lithium ion batteries provide approximately 80% of its rated capacity after 300 cycles or about a year of use (Figure 2). This calculation provides to users generally charging the battery completely each weekday to run applications of medium to low-power (processor text, e-mail, and spreadsheets) or connected wirelessly.

HP provides a guarantee of 12 months for lithium ion batteries. The warranty period is based on the expectation that the Sony vgp-bps9a battery will provide 80% of its initial capacity after 300 cycles with low current to moderate intensities. High intensities of current can make a battery reaches 80% of initial capacity in less than 12 months after the warranty period. Lithium ion batteries will continue to operate below the threshold of 80% capacity; However, the capacity (time of use) offered between charges will continue to decline. The following table summarizes FCC projections after a year on 2 profiles of users and different powers of load. The first profile is for a traveling user download and load the battery altogether almost all the working days (300 cycles per year) in a normal environment. The second profile is for a fixed user who only download the battery once a week in an atmosphere of high temperatures, as a basis for coupling. As shown in the table, the additional heat generated by running applications of greater power or use a docking base accelerates the loss of capacity.