Tuesday 29 October 2013

The Ideal Battery for Cell Phones

Nowadays, lithium cell phone batteries are widely used by mobile phone users. Among the various types of replacement cell phone battery they are considered as the most powerful. They became so popular thanks to their reliability and excellent performance. They are available in compact sizes as well as light weight. Their characteristic high power and larger capacity make them superior to all other types. The light weight and smaller size of them is due to the very high density per unit volume. They provide comparatively higher operating voltage as well. Their rate of discharge also is very high. The lithium ion cell charger enables very fast charging and more than 500 repeated charges are possible with the same cell. The loss of charge is also very slow for these alternatives. They ensure a high level of safety. Being the rechargeable type they are the most suitable for mobile phones.

Lithium cell phone batteries have a much optimized energy-to-weight ratios and have no memory effect. While not in use they have a very slow loss of charge. Its electrodes are made of lithium and carbon both of which are light weight. Lithium is capable of storing huge quantity of energy  since it is highly reactive. As a result, it has high energy density. They hold their charge better than other types available in the market. When they lose about 5% of charge in 30 days NiMH variants loses up to 20% of the charge. Prior to recharging these need not be discharged completely since they have no memory effect. For a replacement cell phone battery this is a great advantage. Moreover, users must be aware of the fact that complete discharge will destroy the lithium variants. Keeping the device with this battery charged above the 50% level is the ideal method of using this type. By discharging completely every time the life span gets reduced considerably.

For the purpose of calibrating, the battery can be completely discharged once in a month. However, frequent complete discharge must be avoided. In order to optimize the lifespan, it may be charged in the range 40% - 80%. Charging the device number of times is better than going from 100 to 0 every time. It should not get heated. By heating the battery will degrade faster. The usual plug-in method of charging is the best for these alternatives. Wireless charging is likely to generate heat which will have an adverse effect on the battery. The lithium battery has a lifespan of 3 to 5 years.

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