Some friends in to theMobile Phone BatteryCharging, charging that the longer the longer the use of time, in fact, it is wrong. Let's look at the most commonly used in the original volume of lithium-ion batteries are generally used (GB/T18287 2000 specification),laptop battery the first constant current charging, ie a current will, while the battery voltage is gradually increased as the charging process, when the battery terminal voltage to reach 4.2V (or 4.1V), constant current charging to constant voltage charging change, that is, a certain voltage, current batteries based on the degree of saturation, with the charging process to continue to gradually reduce, when reduced to 0.01C, that the charge Termination. (C is the control current of the battery nominal capacity of a representation, such as the battery is a 1000mAh capacity, 1C charge current is 1000mA,, Sony PCGA-BP2NY Battery, Sony PCGA-BP2R Battery, attention mA is not Ah, 0.01C is 10mA.)
Why do you think the charge end of the 0.01C: This is the national standard GB/T18287-2000 under discussion is arrived at. There used to be common to 20mA to end, the Ministry of Posts and Telecommunications is the industry standard YD/T998-1999 such a requirement, that is, no matter how much battery capacity, and stop current is 20mA. GB 0.01C contribute to charge under the fuller, right through the identification of a party manufacturers benefit. In addition, the national standard provides for charging time is not more than 8 hours, that is, even if not yet reached 0.01C, 8 hours to, and also believe that the end of charge.
Therefore, the quality is no problem of batteries should be within 8 hours to reach 0.01C, the poor quality of the battery, then charge down meaningless. Lithium-ion or lithium polymer rechargeable battery pack for the best rate of 1C, which means a 1000 mAh battery packs should 1000mA current fast charge to charge such a rate can be achieved the shortest charge time, and will not reduce the battery performance and shorten the life. For the ever-increasing capacity of the battery group, want to achieve this satisfactory charging rates,Sony laptop battery increase charge current value is inevitable.
Lithium-ion battery nominal voltage 3.7V (or 3.6V), charging cut-off voltage 4.2V (or 4.1V, the batteries under the brands have a different design). How to distinguish battery is 4.1V or 4.2V: consumers do not distinguish between, it depends on batteries manufacturers product specifications. Some brands of batteries are 4.1V and 4.2V common, such as A & TB (Toshiba), the domestic manufacturers is basically 4.2V. The 4.1V to 4.2V rechargeable batteries for what will happen: will increase battery capacity, feels good to use, standby time increases, but will shorten the battery life. For example the original 500, reduced to 300. Similarly, the 4.2V of the overcharge batteries, it will lower its short-lived. Lithium-ion batteries is very delicate. Since the battery inside a protective plate, we can rest assured it: No, because the shield is the cut-off parameter 4.35V (this is good, the bad to 4.4 to 4.5V), protection board is to meet in case, if the per times are too rechargeable, the battery will soon decay.
Therefore, the charge is usually eight hours, excessive time is also to no avail.
How do I charge the battery for a new
The use of lithium batteries should be noted that a period of time after the battery is placed into hibernation, lower than normal capacity at this time, use of time has also come to shorten. However, lithium batteries can easily activated, as long as after 3--5 times the normal charge-discharge cycles the battery can be activated to restore to normal capacity. As the lithium battery's own characteristics, its decision is almost no memory effect. Mobile phones so users of the new lithium battery in the activation process does not require special methods and equipment. Not only the theory that, from my own practice point of view, from the outset, a standard method of charging such"Natural activation"Approach is the best.
For the lithium battery"Activation"The problem, many say is: recharge time must be more than12Hours, repeated three times to do in order to activate the battery. Such"The first three charge should be sufficient12Hours"The argument is obviously from the nickel battery (such as nickel cadmium and nickel metal hydride) inherited from the argument., Sony PCGA-BP2NY Battery, Sony PCGA-BP2R Battery, Therefore, Sony PCGA-BP2NY Battery, this argument can be said that a beginning of miscommunication. Lithium batteries and nickel battery charge and discharge characteristics are very big difference, but also very clear to tell you that I have gone through all the serious official stressed that technical information and charge-off will discharge lithium batteries, especially lithium liquid ion battery causing great harm. Accordance with the standard charge and therefore the best time and the standard method of charging, in particular, is not to carry out more than12Long charging hours. Typically, the statement introduced mobile phone charging method is suitable for the mobile phone standard method of charging.
Lithium battery cell phone or the charger will automatically stop after the battery is full charge, there is no electricity nickel charger for the so-called continuous10Hours of"Trickle"Charge. In other words, if your lithium batteries in full, on the white charger is also sufficient. And we can not guarantee that no one battery charge and discharge protection circuit features and never change and the quality of fail-safe, so your battery will be a long-term at the brink of danger. This is also another charge against the chief reason.
In addition, in some mobile phones, charging more than a certain time, if they do not remove the charger, this time not only to stop charging system will start to discharge--Charge cycle. Perhaps the makers of this approach has its own purpose, it is clear that the battery and cell phone/Charger is detrimental in terms of life expectancy. At the same time, long charging would take a long time, often at night, but to our power grid situation, at night in many places higher than the voltage, but also volatile. As already said, the lithium batteries is very precious, and it more than nickel in the electric charge and discharge aspects of fluctuations in the capacity of resistance is much less, so this brings additional risk.
In addition, another aspect can not be ignored is the lithium battery is also not suitable for over-discharge, over-discharge of lithium batteries is also very unfavorable. This leads to the following questions.
Li-ion battery cell phone right way:
I lithium batteries used in mobile phone charging and discharging, the most important tips are:
1, in accordance with standards and procedures, charging time, even the first three have to do so;
2, When the phone prompts when electricity is too low, we should try to begin charging a timely manner;
3, lithium batteries do not need to activate the special method, Sony PCGA-BP2R Battery, in a normal cell phone use lithium batteries will naturally activated. If you insist on spreading the use of "the three previous12Hour long activation charge "approach, in fact there will be no effect.
Therefore, all the pursuit of12Long hours Li-ion battery charging and to mobile phones used in the practice of automatic shutdown, , Sony PCGA-BP2NY Battery, Sony PCGA-BP2R Battery, are wrong. If you have previously done in accordance with the wrong argument, please correct in time, perhaps not too late.
Of course, cell phones and chargers to protect themselves and control circuit of good quality cases, the protection of lithium batteries is still quite guaranteed. Therefore, the charge is the focus of understanding of the rules, and in some cases also may make some concessions. For example you find in your cell phone the night before bed charge, you can also start charging before going to bed. Crux of the problem, you should know what the right thing, and do not deliberately wrong to do so in accordance with.
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