IPhone is powerful and gorgeous, but the problem with a robot battery is that electricity is not enough. This is really a headache. The secret of battery maintenance can help you maximize the energy efficiency of Iphone batteries. IPhone new and old players will have to "charge"! By paying attention to and following some common sense guidelines, you can extend the battery life and life span of your iPhone.


Here are some tips from battery technicians.


1. Use the battery correctly

1. How to recharge the new battery


In the use of lithium batteries, it should be noted that after a period of time, the battery is in a dormancy state. At this time, the capacity is lower than the normal value and the use time is shortened. However, lithium batteries are easy to activate, as long as 3-5 normal charging and discharging cycles can activate batteries and restore normal capacity. Because of the characteristics of lithium battery, it has almost no memory effect. Therefore, there is no need for special methods and devices to activate the new lithium battery in the mobile phone. Not only in theory, but in my own practice, it is the best way to recharge this natural activation method from the very beginning.


For lithium battery "activation" problem, a lot of argument is: charging time must be more than 12 hours, repeated three times, in order to activate the battery. This saying that "the first three charging needs to be filled for more than 12 hours" is evidently extended from nickel batteries (such as nickel cadmium and nickel hydrogen). So this argument can be said to be misleading at the very beginning. There is a great difference between the charge and discharge characteristics of a lithium battery and a nickel battery, and it can be clearly told that all the serious formal technical data I have consulted emphasize that overcharge and overdischarge can cause huge damage to lithium batteries, especially liquid lithium ion batteries. Therefore, charging is best charged by standard time and standard method, especially not over 12 hours. Usually, the charging method introduced in the instruction manual is suitable for the standard charging method of the mobile phone.


In addition, the cell phone or charger of the lithium battery will automatically stop after the battery is full, and there is no "trickle" charge that the nickel electric charger calls for more than ten hours. That is to say, if your lithium battery is full, it will also be charged on the charger. No one of us can guarantee that the battery's charge and discharge protection circuit is never changed and the quality is all the same, so your battery will be on the verge of danger for a long time. This is another reason why we are opposed to long charging.


In addition to some mobile phones, after charging more than a certain time, if the charger is not taken, the system will not only stop charging, but also start the discharge charging cycle. Perhaps the manufacturer of this approach has its own purpose, but obviously it is not good for the life of batteries and mobile phones / chargers. At the same time, long charging takes a long time and often needs to be carried out at night, and in the case of China's power grid, many places have higher voltage at night and more fluctuating. As I said before, lithium batteries are very delicate. They are much worse than nickel batteries in terms of charge and discharge, and this brings additional danger.


In addition, another aspect that can not be ignored is that lithium batteries are also not suitable for over discharge.


2. When to start charging


This can often be seen because the frequency of charge and discharge is limited, so the power of mobile phone batteries should be used up and recharged as much as possible. But I found an experimental table for charging and discharging cycles of lithium ion batteries. The data on cycle life are listed as follows:


Cycle life (10%DOD):>1000 times


Cycle life (100%DOD):>200 times

DOD is the abbreviation of the depth of the discharge. It can be seen from the table that the number of rechargeable times is related to the depth of discharge, and the cycle life of 10%DOD is much longer than that of 100%DOD. Of course, the total charge and discharge of the latter should be better if the total capacity of the actual charging is 10%*1000=100100%*200=200. In normal circumstances, the battery should be recharged in accordance with the principle of recharging the battery surplus, but if the cell phone is not expected to stick to the whole day for second days, it should start charging in time.


When you need to recharge an important event that is expected to lead to a busy communication, even when there is still a lot of electricity on the battery, it will be charged ahead of time, because there is no real loss of the "1" charge cycle life, that is, "0.x", and often this x will be very small.


The principle of battery recharge is not to go to extremes. As far as long charging is concerned, it is widely known that it is better to use automatic battery shutdown as far as possible. This is actually a practice on nickel batteries to avoid memory effects. Unfortunately, it also flows on lithium batteries. There was once a warning that the cell phone battery was too low. It was still not charged and continued to use the example of automatic shutdown. As a result, the cell phone in this example did not respond after charging and starting, and had to be sent to customer service for repair. This is due to the fact that the battery is too low due to excessive discharge, so that it does not have normal charging and start-up conditions.


3. The correct practice of lithium battery cell phone


To sum up, the most important hints for charging and discharging of lithium battery phone in use are:


(1) charging according to standard time and procedure, even if it is the first three times.


2. When the cell phone is too low, it should be charged as soon as possible.


The activation of lithium batteries does not require special methods. Lithium batteries will naturally activate in normal use of mobile phones. If you insist on using the "three first 12 hours long charging activation" method, it will not be effective.


Therefore, all the pursuit of 12 hour super long charging and the use of lithium battery phone automatic shutdown is wrong. If you used to do it according to the wrong statement, please correct it in time. It may not be too late.


Of course, in the case of good protection and control circuit of mobile phone and charger, the protection of lithium battery is quite guaranteed. Therefore, the understanding of charging rules is the key point, and in some cases, we can make some concessions. For example, if you find that your cell phone must be recharged before you go to bed at night, you can also start charging before going to bed. The key is that you should know what the right thing is and do not deliberately follow the wrong way.


Maintenance of two and Iphone batteries


1.Iphone uses lithium polymer batteries, and there is no memory effect, so there is absolutely no need for each charge and discharge completely (that is, you want to charge at any time).


2. when the lithium battery is charged and discharged every cycle, the power will be reduced a little, and it will be reduced to 80% after about 400 cycles. The so-called cycle of charge and discharge is full and full of light, that is, if you use 20% of the electricity is full, to repeat 5 times to calculate a charge and discharge cycle.


3. because of the power of chips in the battery, in order to calibrate, a full discharge should be done once a month (that is, full power after use).


4. as long as Apple's official power supply is used, it will become a direct power supply mode after being filled, and there will be no overcharging problem.


5. the charging process of lithium battery is that the first 80% can be completed by fast charging for 2 hours, followed by 2 hours after continuous charging. This is normal and does not have to do anything special.


So summed up, Iphone battery maintenance is very simple, in addition to the next introduction of electricity saving attention, you just do monthly calibration, as far as possible the use of power connection (such as in the office), there is no other notice. It should be misunderstood to avoid overcharging and often full (or often not full).


Three, Iphone battery saving technique


1.3G is the most power consuming, so Iphone3GS can use more than 1 days because it almost doesn't use 3G. The power consumption of 3G is 2 times that of playing games and WIFI, and 3 times the number of phone calls.


2. try to close the push and software timing check function when necessary.


3. turn off one or more of the 3GWIFI Bluetooth functions when there is no need.


4. network search is very power consuming, so if the 3G function is closed in the unstable area of the 3G signal, the flight mode can be adjusted in the area where the telephone signal is unstable.


5.GPS is very power consuming and does not need to start the GPS function without any need.


6. when listening to the song, starting the equalizer will increase the power consumption. If you don't need it, you can turn it off.


Supplement: lithium battery is very afraid of heat, try not to let him work at more than 35 degrees Celsius. In particular, do not charge in this case, otherwise it will quickly reduce battery power. So when you are driving, you should avoid staying in the car in summer or being exposed to the sun. If you use Iphone to start burning, please turn off the machine and recharge it after cooling. In addition, it is suggested that a full charge and discharge per month should be used to calibrate the control chip on the battery instead of expanding the battery capacity as Ni MH battery.