How does overcharge and over discharge protection work in xps m1330 battery?

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Lithium dell xps m1330 batteries become more and more popular among consumers. Because Lithium batteries are small in size, of high energy density, and have no memory effect, long cycle life, high-voltage battery and low self discharge rate, etc.. But unlike NiCd and Ni-MH dell xps m1330 battery, Lithium batteries must take the security of charging and discharging into account to prevent deterioration.

Because of the high energy density of lithium dell xps m1330 battery, it is difficult to ensure the safety of using the laptop battery. If the dell xps m1330 laptop battery is overcharged, temperature will arise and energy will be excess, thus electrolyte decomposes and releases gas. In this way, internal pressure goes up, leading to spontaneous ignition and rupture of the dell xps m1330 laptop battery.

On the contrary, if the batteries are over-discharged, the decomposition of electrolyte will lead to deterioration of characteristics and durability of the batteries, thereby reducing the number of charge cycles.

Therefore, we set protection to the Lithium dell xps m1330 battery. Below we will tell you how the batteries react when they are overcharged and over discharged.

1. Over-charge protection

The over-charge protection IC principle is like this: when the external charger is charging the lithium Dell Inspiron 1525 Battery, in order to prevent the rising internal pressure caused by the rising temperature, the charging should be terminated. At this point, the protection IC will detect the dell 1525 battery voltage, when it reaches 4.25V (suppose the point of overcharging is 4.25V), over-charge protection will be applied by cutting off MOS, and then charging will be terminated.

2. Over-discharge protection

The over-discharge protection principle is like this: In order to prevent over-discharging, it is assumed that the lithium Dell Inspiron 1545 Battery connected to electrical load, when the lithium battery voltage is lower than the over-discharge voltage detection point (Supposed to be 2.3V) , overcharge protection will be implemented, making MOSFET from the state of on to off and then terminate discharging. In order to avoid over discharge phenomenon, dell xps m1330 batteries should be kept in standby mode

with a low quiescent current of only 0.1uA at that moment. When the lithium batteries are connected to the charger, and the lithium xps m1330 battery voltage is higher than the over-discharge voltage, over-discharge protection can be released.

How to use the dell studio 1555 battery

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Generally speaking, the warranty of dell studio 1555 battery is only one year, but for some brands only six months. If battery problems show up beyond this period, the repair costs or the price to purchase a new battery would be very high. So the proper use of the dell studio 1555 laptop battery becomes very necessary. Below are some experience summarized by the author about how to use the laptop battery properly. Let’s take a look at them.

A. Recharging the new buy dell studio 1555 battery for three times before using it. Nowadays, most of the dell studio 1555 laptop batteries are lithium-ion batteries, but the "memory effect" is still not fully resolved. So for newly purchased laptop, it should be fully charged and fully discharged to activate the battery. The reason for the above move is that during the process of transportation and selling, the dell 1555 battery electrode materials will be passivated, which makes the battery capacity lower than the normal value, and the life time of the studio 1555 laptop battery will be shortened. However, lithium batteries can easily activated through 3-5 times normal charge-discharged cycles and in that way it can come back to normal capacity. And for the so-called fully discharged of the 1555 battery doesn’t not mean using up all the capacity but when the value is about 3%. If the remaining capacity of the battery is less than 3%, it is also not good!

B. Not free to charging the Dell Inspiron 1525 Battery battery. Don’t charge the battery whenever you like. You should keep a good habit of charging. This means that every time, you should charge the battery when it is running out of power at almost the same capacity.

C. Reduce the use of the studio 1555 laptop battery. Use the external power supply as much as you can to reduce the use of laptop battery to extend battery life. As we know that the average use of battery is about 500 to 1000 times. Do not nonuse the Dell Inspiron 1545 Battery for a long time, or battery failure will happen. If the battery is left unused for a long period, it is recommended that the battery should retain about 30% of electricity.

D: Avoid hot or cold environments. Temperature has great effect on the life time of lithium batteries If the temperature is below freezing point, the dell studio 1555 battery may burn down at the moment of turning on the 1555 laptop, while the overheated environment will reduce the capacity of laptop battery.