1, iPhone4S uses a lithium polymer battery, there is no memory effect, so absolutely no need to charge and discharge each time (that is, you want to charge at any time).

2. After each charge and discharge cycle of the lithium battery, the power will be reduced by a little, and will be reduced to 80% after about 400 charge and discharge cycles. The so-called one charge and discharge cycle means completely filling and emitting light, that is to say, if you use 20% of the electricity to be full, it is necessary to repeat the charge and discharge cycle five times.

3, because there is a chip in the battery to calculate the power, in order to calibrate, you should do a complete re-discharge every month (that is, use it after full charge).

4, as long as the official power supply of the apple, full will become a direct use of the power mode, there is no overcharge problem.

5. The charging process of the lithium battery is that the first 80% can be completed by fast charging for 2 hours, and the latter 20% is also required to be continuously recharged for 2 hours. This is normal and you don't have to do anything special.

So in summary, the iPhone's battery maintenance is very simple, in addition to the power-saving precautions introduced later, you only need to do the monthly calibration, try to use the power connection (such as in the office), there is no other considerations. It is a misunderstanding to prevent overcharging, to be full (or often not full).

1, 3G is the most power-hungry, so the iPhone 3GS can be used for more than 1 day because almost no 3G function is used. The power consumption of using 3G function is twice that of playing games and wifi, and is 3 times that of making calls. .

2. Try to turn off push and software timing check network functions when not needed.

3. Turn off one or more of the 3G\Wifi\Bluetooth functions when not needed.

4. The network is very power-hungry, so if the 3G function is turned off in areas where the 3G signal is unstable, the flight mode can be adjusted in areas where the telephone signal is unstable.

5, GPS is very power-hungry, do not have nothing to start the GPS function software.

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

Supplement: The lithium battery is very hot, so try not to let him work more than 35 degrees. In particular, do not charge in this case, otherwise the battery will be reduced quickly. Therefore, when staying in the car, avoid staying in the car in summer or being exposed to the sun. If you have started to use your iPhone, please turn it off and then recharge it. It is also recommended to perform a full charge and discharge every month to calibrate the control chip on the battery instead of amplifying the power like a NiMH battery.

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