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The Way of Charging A Lithium Ion Battery

by TracyMiller    Sep 10, 2013, 12:13 AM

Lithium ion batteries are now widely used in cell phones because of its highly efficient and environmental friendliness. While a lithium ion battery is being charged, ions are forced into the anode and cathode of the battery by the electric current. The process of charging is simple if you follow some simple precautions to insure safety and to maximize the life of the batteries. Always check the battery manufacturer's specifications before you charge a lithium ion battery. Improper charging may result in a serious fire hazard.

1. Use a battery charger which is designed for the lithium ion batteries. Never use a low power (trickle charge) system. This can cause lithium to adhere to the anode and oxygen to be generated at the cathode, producing an extremely flammable mixture. Lithium ion batteries come with an internal "safety board" that can automatically terminate charging when the current rate drops to 10 percent of the initial charge rate, indicating the battery is fully charged. The best chargers also feature a timer you can set to stop the charging process at a preset time.

2. Place the lithium ion batteries in the charger and make sure it is plugged in. Depending on how much power remains in the battery it will take two to six hours to fully charge most lithium ion batteries. As an added safety precaution, set the timer to avoid the possibility of overcharging.

3. Charge the batteries at the appropriate voltage setting. You can extend the useful life of lithium ion batteries by using a slightly lower setting. This will give you about an 80 percent charge.

4. Charge lithium ion batteries to about 40 percent before you put them on the shelf. It is not good for the battery to fully charge it and then store it, since this will shorten the battery's service life. To further extend the useful life of lithium ion batteries, recharge stored batteries to the 40 percent level every few months (check the battery specifications for recommended times).

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