Proper charging and use of cell phone batteries

1. Lithium batteries, whether used or not, have a "shelf life" of 3 years and decay quickly after 3 years. And the other is full charge cycle, which I'm not going to explain any more, which decays quickly after about 400-500 times. Just see if you use it for 3 years or the number of times you get it first.

2. In addition to being afraid of low power, lithium batteries are also afraid of overheating, especially when charging. If your sleeve is poorly heated and hot when charging, it is best to take it off when charging. Lithium-ion batteries are stored in the refrigerator after charging to 40 %, but do not freeze.

3. Don't wait until the electricity runs out to recharge, which will accelerate its loss. Lithium batteries lose a lot when they are low in power, and can live as long as 40-60 % of the time, but this is impossible for commonly used devices, but you can always keep it at 100 %, that is, often charging. We're done. It won't overcharge, and it's powered by electricity, and the battery won't waste charge cycle, so it's good for life. You only need to fill it once a month to calibrate the battery scale. 4. You can use it when charging. Some people say that using it when charging will cause the charging to be slow. Is the battery charging while discharging? No, there are two circuits in the phone, one to charge the battery and the other to power the machine directly through AC. Charging is slow because part of the current is used by the machine, so the charging current is smaller, especially when the USB charges because the current itself is small. However, it is worth noting that slow charging with small currents is the preferred charging method for lithium batteries, which produces less heat and is more conducive to its life span. Also, do not use games or other heavy loads while charging! The reason is not that the power consumption is large, but that the same 2 will produce large amounts of heat, thereby reducing the battery life. General on the Internet, sending information is no problem, long time in the hands of the phone is not good, it is recommended to use headphones.

5. After charging, it will not cause any harm to the battery when it is connected to the power supply, because it is directly powered by the power supply, which reduces the number of charges and also helps to extend the battery life. A lot of people would argue that my laptop was plugged in and the battery was gone a year later. Notebooks, unlike mobile phones, are often caused by heat, poorly heated notebooks, and battery life drops quickly, even if you don't use it. If you keep playing games with the power, you may overheat your phone because of the heat generated by the power supply. This is not good. As long as it is not hot, there will be no problem. You can always plug in the power supply until you go out. "I think safety is the most important thing, and someone to look after is the best." 6. It is also not good to always charge the power when the battery is above 90 % but below 100 %, that is, always "toppingoff". Thinkpad's notebook has a mechanism that allows the battery to remain uncharged at more than 90 %. If the phone also has a charging switch, we can safely use the power for a long time. There is no problem with the battery charging continuously at 20-80 %.

7. There's no harm in charging overnight, because you're not using it. It doesn't produce heat. Individuals think that overcharging is never a good thing. It is best not to charge at night. In some areas, the voltage is unstable at night and is harmful to the machine! Hey!

1, how to charge the new battery

In the use of lithium batteries, it should be noted that after the battery is placed for a period of time, it enters a dormant state. At this time, the capacity is lower than normal, and the service time is also shortened. But lithium-ion batteries look good.

Easy to activate, as long as the battery can be activated after 3-5 normal charge and discharge cycle, restore normal capacity. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect.

Therefore, the new lithium battery in the user's mobile phone does not require special methods and equipment during the activation process. Not only in theory, but in my own practice, from the very beginning.

Charging by standard means is the best way to "naturally activate".

For the "activation" of lithium batteries, there are many arguments: The charging time must be more than 12 hours, repeated three times to activate the battery. This "first three charges should be filled

"More than 12 hours" is obviously a continuation of nickel batteries(such as nickel cadmium and nickel hydrogen). So this statement can be said to be misrepresented at the beginning. Lithium and nickel batteries

The charge-discharge characteristics are very different, and it is very clear that all the serious formal technical information I have consulted emphasizes that charge-discharge will have a positive effect on lithium

Pools, especially liquid lithium-ion batteries, cause great damage. Therefore, charging is best done according to standard time and standard methods, especially without overcharging for more than 12 hours

And ... In general, the charging method described in the mobile phone manual is a standard charging method suitable for the mobile phone.

In addition, lithium cell phones or chargers will automatically stop charging after the battery is full, and there is no so-called "trickle-down" charging of nickel-electric chargers that lasts for more than 10 hours. Which means ...

If your lithium-ion battery is filled, it will be on the charger for nothing. Neither of us can guarantee that the characteristics of the battery's charge-discharge protection circuit will never change and the quality will be foolproof.

So your battery will be on the edge of danger for a long time. This is another reason why we oppose long charging.

In addition, after charging for some mobile phones for a certain period of time, if the charger is not removed, the system will not only stop charging, but will also start the discharges and charges cycle. maybe

The manufacturers of this practice have their own purposes, but it is obviously detrimental to the life of batteries and cellphones / chargers. At the same time, long charging takes a long time and often takes place at night.

According to the situation of China's power grid, the voltage at night in many places is relatively high and fluctuating. As we have said, lithium batteries are delicate and more resistant to charge and discharge than nickel

The ability to fluctuate is much worse, and this poses additional risks.

In addition, another aspect that can not be ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also very unfavorable to lithium batteries. This leads to the following questions.

2, when should the charging start in normal use

This is often seen in our forum, because the number of charge and discharge is limited, so the power of the cell phone battery should be recharged as much as possible. But I'm looking.

To an experimental table on the charge and discharge cycle of lithium-ion batteries, the data on the cycle life are listed below:

Cycle life(10 <UNK> DOD): & GT; 1,000 times.

Cycle life(100 <UNK> DOD): & GT; 200 times

The DOD is an English abbreviation for discharge depth. From the table, it can be seen that the number of rechargeable times is related to the discharge depth, and the cyclic life of 10 <UNK> DOD is much longer than that of 100 <UNK> DOD. of course

If the relative total capacity of the actual charge is: 10 <UNK> * 1000 = 100, 100 <UNK> * 200 = 200, the latter's full charge discharge is still better, but the previous Netizen's statement is to

Make some corrections: Under normal circumstances, you should be recharged on a reserved basis, using up the rest of the battery, but if your battery is not expected to hold on to the entire battery on the next day

During the day, you should start charging in time, of course, if you want to carry a charger to the office.

And when you need to recharge to cope with an important event that is expected to lead to busy communication, even when the battery has a lot of power, then you just charge ahead.

Because you don't really lose "1" recharging cycle life, which is "0.x" times, and often this X will be small.

The principle of recharging the battery after it's used up is not to go to extremes. A saying that is as widespread as long charging is that "try to run out of cell phone batteries.

It is best to use automatic shutdown. " This practice is actually just a nickel battery practice. The purpose is to avoid the memory effect. Unfortunately, it is also circulating on lithium batteries. Used to.

After the warning that the battery of the mobile phone is too low, it still does not charge and continues to use the example of automatic shutdown. As a result, the cell phone in this example was later charged and turned on.

No response, had to send customer service overhaul. This is actually because the battery is too low due to excessive discharge, so that it does not have normal charging and boot conditions.

3, the correct approach to lithium battery mobile phone

To sum up, my most important reminder of the charge and discharge problem of lithium battery phones in use is:

1, according to the standard time and program charging, even if it is the first three times to do so;

2, when the mobile phone electricity is too low prompt, should start charging as soon as possible;

Lithium batteries do not require special methods for activation. Lithium batteries will naturally activate during normal use of mobile phones. If you insist on activating with the "first three 12-hour charges"

The method, in fact, will not be effective.

Therefore, all the pursuit of 12 hours of ultra-long charging and the use of lithium battery phone automatic shutdown is wrong. If you 've done it the wrong way,

Please correct it in time, perhaps it is not too late.

Of course, in the case of mobile phone and charger own protection and control circuit quality, the protection of lithium batteries is quite guaranteed. Therefore, the understanding of charging rules is the focus, and in some cases it is possible to make some concessions. For example, if you find that your cell phone must be charged before you go to bed at night, you can also start charging before going to bed. The point is that you should know what is right and don't try to follow the wrong line.

The page contains the contents of the machine translation.