Why can t my battery be used?

The normal operating voltage range of lithium batteries is volts. Today's lithium batteries have a protective circuit board inside and the charging cut-off when the charging voltage is exceeded. When it is lower, the voltage is no longer output to protect the battery from damage due to over-discharge or over-charge.

The power consumption of this board is very low. But it also consumes the energy of the battery. And the battery itself also has a small leakage.

Especially if the new battery itself is not enough, it can be left for up to 9 months for a long time. It is likely that the lithium battery will be scrapped due to deep over-discharge due to the power consumption of the protection circuit board and itself. Therefore, generally idle batteries (no matter what kind of rechargeable batteries) must be fully charged regularly (about a month).

Of course, some over-discharged batteries may be re-used after special method activation, but only if there is no deep overcharge or over-discharge. It's unknown what your battery is doing now. It is recommended to use a universal charger to charge for 12 hours, if it doesn't work, scrap it!

If the phone battery is not used for a long time, it will need to be reactivated.

You should charge it once every 3 months. The best storage condition for batteries is that they should be charged when the voltage is low. So your battery won't work well. The service life has been shortened much, much.

If it is a new battery, it is not good quality, it should be returned, if there is such a problem in the mobile phone battery that has been used for one or two years, it is the battery aging, and the new battery should be replaced in time, you can use the authentic original mobile phone battery, or use the commercial battery of a well-known brand such as the domestic Hony battery with guaranteed quality.

This is determined according to the actual working current, the general nominal capacity before leaving the factory, he is tested with a current of a few tenths of a a, and the capacity that comes out is the so-called nominal capacity, but in actual use, the current is generally in a few A and a few A, saying that the actual capacity is often much worse than the nominal capacity, so the choice of battery can not only look at the nominal capacity, the nominal capacity is a false standard!

Mobile phone batteries generally use "polymer cells", the activity of polymer is life, generally charged and discharged 500 times, refers to the number of complete depletion and fullness, more than 500 times after the storage of power will be seriously attenuated. So it will become less and less durable.

Some new batteries will also have the problem of not being durable, such as the original battery can be used for two days, buy a new one If the capacity is the same as the original battery, but it can only be used for one day, then there are two possibilities, one is the battery is false, and the other is the secondary battery cell used by the manufacturer in order to reduce costs. There will be problems with not feeling durable.

There are also questions about usage habits, whether you talk a lot, whether you often play games online, etc.

If the phone has been used for a long time, then an aging phone will also be the source of power consumption.

Hello: This Samsung i739 is a smartphone, it will consume more power than non-smartphones, due to your use time and usage habits, the standby length will change, and the strength of the signal will also affect the battery power.

According to your description, to extend the standby time of this phone, it is recommended that you pay attention to the following:

1.Bluetooth, Wi-Fi, GPS, camera, browser, and other related applications, we recommend that you turn them off in time after using these functions.

2.After running the app, it is recommended to press the [Back Button] to exit, if you press the [Home Button] the app is still running in the background, resulting in the consumption of power and system memory.

3.After typing ** or running the program, it is recommended to press the [Power Button] to turn off the screen in time to save power.

4.If you use your mobile phone TV or mobile phone navigation for a long time, it is recommended to use the charger at the same time.

5.It is recommended to set the auto-lock screen time to 15 seconds.

6.Adjust the brightness of the mobile phone screen according to the actual situation (the screen brightness can be lowered to save power).

If you feel that the standby time of this mobile phone is very short, it is recommended to contact the local Samsung service center for engineers to test

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Generally, the anode material is more lively.

Therefore, if A and B are connected, A is the negative pole and A is greater than B

When c and d are connected, c is the negative electrode and c is greater than d

When A and C are connected, C is the positive electrode and A is greater than C

When b and d are connected, b is the positive electrode d is greater than b

So B a > C > D > B

b。In this galvanic cell device, iron is used as the negative electrode: Fe-2E- =Fe2+, and graphite is used as the positive electrode: 2H+ +2E- =H2, and electrons flow from the negative electrode (iron) to the graphite (positive electrode). C(H+) near the ferroelectrode is basically unchanged. Therefore, choose B.