Because of various models of mobile phone attached to different causes, charger socket between each mobile phone charger not common. When the user mobile phone chargers damage or loss, cannot be repaired or buy less charger, cannot use the same key. Universal charger manufacturers see such opportunities, development and production of the mobile phone’s battery charger, the charger because of its small volume, convenient to carry, simple operation, low price, suitable for machine, deeply user’s welcome. Here in shenzhen Alexander tong industrial Co., LTD production of universal tong S538 universal charger for example, this paper introduces the working principle and maintenance method. The charger, in the market share and no random incidental to bring some maintenance diagram of difficulty, according to the work principle of surveying and mapping object, see figure for maintenance.
Universal tong S538 universal charger on exterior design is unique, the panel using transparent plastic production of elliptic clip, transparent plastic panel two fixed distance adjustable stainless steel electrode for charging reed. The rear side panel of one polarity switch switch (test) and the four lights, according to the state of user can adjust the charger electrode distance and the output voltage polarity, and can be easily seen by state indicator of charging battery.

A, principle of work

The charger circuit consists mainly of oscillating circuit, charging circuit, protect circuit, the input voltage AC220V, 50/60Hz, 40mA, output voltage DC4.2 V, output current 150mA in 180mA ~. In charge, first, connect to the rechargeable battery charger panel on whether the test indicator light? If the bright, correct polarity, can switch on the power, Otherwise, the battery charger output voltage polarity and the polarity is opposite, then need to click the polarity switch AN1 (test button). Specific circuit principle as follows.

1 oscillating circuit

This circuit consists mainly of transistor VT2 and switch transformer T1 etc. Switch on the power, communication 220V diode rectifier, VD2 half wave formed around run at 100V dc voltage. The voltage transformer by switching the primary windings 1 T added to transistor VT2 c extremely, meanwhile, the voltage by starting resistance is the R4 VT2 is provided a b bias voltage, make VT2 conduction. At this time, the transistor VT2 is composed of T1 and switch transformer intermittent oscillating circuit start working, switch transformer T 1-1 in current through the primary windings. Because of the positive feedback effect, in transformer windings of the 2-1 the voltage induced by the feedback resistance and capacitance R1 added C1, make the b VT2 transistor VT2 b very current flow, quick in saturated zone. With the capacitance C1 ends, voltage VT1 b voltage gradually lowered, make triode VT2 is gradually saturated zone, its from beginning to reduce collector current transformer T, 1-1 in the primary windings of flux also began to decrease. In transformer windings of the 2-1, the negative feedback voltage induction deadline, completing a rapid VT2 oscillation periods. During the globe in VT2 into the transformer windings is 1-3 induced a 5.5 V ac voltage, or as the recharging voltage level.

2 charging circuit

This circuit consists mainly of a RuanSu seal block IC1 (YLT539) and the transistor VT3 etc. From the 1-3 transformer windings induction of ac voltage 5.5 V VD3 diode rectifier, filter, output capacitance C3 a dc voltage (about 850 V), the voltage no-load part to VT3 triode e extremely, Another part of RuanSu to block sealing IC1 YLT539 (1), provide the job power. Integrated block IC1 job power after the start work, in its eight feet output low level, VT3 triode charging pulse conduction, dc voltage began to 8.5 V battery charging E.

As for the rechargeable battery E, 4.2 V lower voltage is the voltage resistance by sampling R11 R12 pressure, and add to the integration of six feet IC1 block, the lower voltage reference voltage IC1 integrated blocks the internal integrated blocks, 8 feet IC1 output level is lower, the transistor VT3 b extremely potential also lower the flux, the guide, dc voltage (8.5 V) by switching to cell polarity S1 fast charging E. Because of the integrated block IC1 2, 3, 4 feet and capacitance C4 common component oscillating circuit, the two feet of the output pulse vibration resistance to battery indicator R16 LED1 (green), the positive anode block received eight feet IC1. The battery just answer one circuit IC1, integrated block 8 feet output level is lower, the battery indicator light LED1 flashing. With rechargeable battery charging prolonged, the voltage, integrated block slowly IC1 eight feet slowly rising, charging output voltage LED1 lights flashing light become weak gradually.

When the battery E slowly when filling to 4.2 V, integrated block 6 feet IC1 also reached its internal potential reference voltage 1.8 V. At this time, the integrated circuit IC1 piece inside, make its eight feet moves voltage output level, VT3 triode, rechargeable lights no deadline LED1 flashing lights, and extinguished by LED2 (green) destroyed brighten.

3 voltage protection circuit

This circuit consists mainly of transistor VT1, diode VDZ1 etc.

Over-voltage protection: when the output voltage rises, in the 2-1 transformer windings of the inductive voltage feedback, capacitance increases by charging pressure. C2 When the capacitor voltage exceed voltage at C2 VDZ1 diode, the voltage stabilizing conduction, VDZ1 diode breakdown voltage, the base of transistor VT2 is low, make its conduction time shorten or quickly, the switch by coupling, transformer T1 secondary output voltage. Conversely, the output voltage, thus ensuring stable output voltage.

Over-current protection in the switch on the power, or when certain causes a moment when the current transistor VT2 in R5, R6, the pressure drop is big, make the over-current protection tube, VT1 conduction deadline, thus effectively prevent VT2 VT1 switch for current impulse and damage. Also on the resistance of the pressure drop, R6 make voltage capacitance C2 ends, over-current protection principle, process and the same voltage here not repeated. VT1 triode tube is over-current protection, R6 is VT2 R5, over-current protection of sampling.

Second, the common breakdown maintenance

Ex.1: connected with rechargeable batteries and power supply, power LED3 indicator lights and TEST pwi LED4 TEST bright, and LED1 charging and LED2 not bright lights, no voltage output, cannot give the battery.

Analysis: the fault is access oscillating circuit switch without work charger. In the actual repair process, found switch pipe resistance and VT2 is most damage R6. Normally, battery recharging circuit E working voltage, low probability of its component damage is not great, namely after subprime T1 transformer switch is the probability of damaged circuits.

Example 2: connected with rechargeable batteries and power supply, each state indicator shows normal, but is not charged rechargeable electric or longer.

Analysis: the fault is overhaul VT3 triode 8550 (with normal tube), after the change, can remove the faults. If VT3 triode, reoccupy table test capacitance C3 (100 mu F / 16V) ends in dc voltage, normal 8.5 V. If the voltage is normal, should check R7 resistance, integrated blocks or IC1 IC1 integrated blocks the normal parameters such as schedule. If the voltage, measure voltage transformer switch T1 subprime, normal in exchange 5.5 V. If the voltage is normal, capacitance C3 or rectifier diode VD3 damage, If the voltage transformer, should check switch before each element and its magnitude T1.

1, invisible battery back-up

Your cell phone battery shortage, in order to make it can continue to use, according to * imports, # key reboot, after the start, you will find the power increased by 50%. This part of the hidden spare power with you must charge

Again, when the battery, the battery back-up invisible also charging, next time again low power can use this method. Know the emergency power shortage is very useful if mobile phones.
2, the handset battery don’t wait no electricity charge.

We will have a general idea of the mobile phone battery power is to put all finished recharging better basically is right, because we use rechargeable batteries before most nimh batteries are (NiH), and the so-called nimh batteries are put through memory effects if not words will lead to more electricity filling rapidly shrinking battery life. Therefore, we will use the last drop start charging electricity. But now, phone and general product with lithium most IA (Li) battery, and lithium battery is no memory effects. If you still wait all finished with electricity after filling words can make instead of lithium battery internal chemical reaction and life can reduce. The best way is to have it kept charging anytime, so best full lattice of your battery can be used for long. This is the manufacturer, and gets the message itself and testing.
3, a mobile phone with don’t use reception and a full only when compared to launch strength unexpectedly are more than 1,000 times as. So… Always speak phone… Should notice oh… @0@, from a mobile operators there yesterday won a very important message, that is when you find your mobile phone reception strength only one case, would rather talk or switch to hold a public phone. Just don’t talking, still, deep, stop, endless… Why? Everybody knows the phone is always let people worry about electromagnetic. And mobile phones to reception in poor regions can still keep quite call quality

The electromagnetic wave, will strengthen mobile launch reception. When a full and only when compared to launch strength unexpectedly are more than 1,000 times as high strength. Electromagnetic 0.6 W (watts) 0.6 W how strong? I can’t describe it to your head will have anything bad influence, but can change to compare two examples:

2 very few people know mobile 4 big hidden function! ZT –

1) diameter is about 4 centimeter horn of small radio the largest open and then stick in the ear, that the noise is generally energy, less than 0.5 w. w. 0.25.

2) finger on the output of the laser light intensity 0.1 W (equivalent to the front lines? D fibre optic network energy) seconds you will have stings feeling, you can long endure the above two kinds of situation?

How can you confirm that the electromagnetic wave to 0.6 W in your ears will fine?
How to keep the cell phone battery back

When your cell phone battery short (memory effects or aging), whether you’ll buy a battery to replace?

The next time you encounter this kind of situation when please save you money, tell you a very effective method might as well try:

The 1) battery again into the plastic wrap paper wrapping package well into the freezer days (newspapers can absorb excess moisture)

After three days at 2) removed down days

3) days after the battery charging and fill in mobile phone wrapped test (estimate can save 80-90%),

If you wish to extend battery charger, except the effective use of time to ensure the quality of the battery, the right skills necessary:

1 battery factory, has carried on the activation treatment, and the beforehand, so all spare battery charging electric batteries, a friend said, according to the setting time still charging shortage, assumptions on standby for the names of batteries battery indeed, this kind of circumstance should extend adaptation for 3-5 times more full charge.

2 if a new cell phone battery is lithium ion, before 3-5 times charging commonly called adaptation, filling, in order to ensure that the above 14 hours fully activate lithium ion activity. Lithium ion battery, but there is no memory effects of laziness, should give full activated, to ensure the best after use.

3 some automation intelligent quick charger when instructions lights change, only that filled with 90%. Charger automatically change with slow rechargeable batteries. The best will batteries, otherwise will shorten the time of use.

4 rechargeable lithium batteries, not need special discharge, improper discharge will be damaged cells. When the battery to slow to a ho-hum, reduce fast filling way, Time does not exceed 24 hours. Battery after three to five times after full charge of its internal chemicals will be all “activate” to achieve the best effect.

5. Please use the original or well-regarded brand of lithium battery charger, lithium battery charger should use special, and follow instructions, otherwise it will damage to the battery, or even dangerous.

6 there are many users often in charge the phone open, actually such will easily hurt in the mobile phone service, because the process of charging circuit, mobile phone, if there will be hot exotic phone, may produce instant backflow of mobile phone of current internal damage components.

7. The battery life depends on the number of charge, and shall be avoided when the battery charging more electricity can shorten the battery life. More than 7 days phone battery should be completely discharge, sufficient electricity before use.

There are battery, self-discharge nimh batteries by day when the residual capacity will be about 1%, lithium batteries will discharge day by 0.2% – 0.3% discharge. In the battery, try to use the special socket, will not be Shared with the home appliance such as TV charger socket.

9. Although mobile network covering area in charge, but in mobile phone, cannot have accepted and call. At this time, can use the mobile phone through transfer function, will be transferred to the side of the fixed telephone calls, in order to prevent the loss, this kind of method for mobile phone is not network covering area or weak signal and temporarily unable to connect also apply.

10. Don’t be exposed to high temperature or cold days, like mobile phones, should not be put in the car, the sun exposure, Or to put their air conditioning, straight blow. When charging, battery has a hot is normal, but cannot make it what temperature “suffer”.

NiCd (11) nickel cadmium battery) before must ensure the battery totally without electricity, battery recharging after must ensure that sufficient electricity.

12 if mobile phone battery for too long, had better not use mobile phone service department to make an application for batteries, also can live with a constant dc voltage, adjusting voltage, current for 5-5 ~ 600mA 6V reverse connect battery.

When the battery is not as long as possible, for no protection circuit batteries charging should cease after the battery, otherwise will affect performance by fever or overheating.

14 lithium ion battery must choose special charger, otherwise it may reach saturation, affect its performance. After charging, should avoid to put in more than 12 hours on the charger, long-term need not when should make battery and mobile phones

To use the phone’s battery limit in the refrigerator, freezing time and again continue to use, battery time than freezing to long! “This is the latest rumours in hangzhou, the old cells repairing mobile shortcuts.
It effective? Many people have this question after that.
The mobile phone battery extend frozen standby time
In order to verify this statement, journalists would be a T628 SONY’s original battery as subjects. This phone is bought in April 2005, the electricity
Pool, have been used for years.
The main ShaoXianSheng said, under the condition of normal use mobile phones, the standby time about maintaining in 24 hours. If the number of calls, the duration of the battery will be less. If the average time for the phone or make calls for 3 minutes, 10 times, power line.
Before the test, turn off your cell phone battery, in full to boot. Thereafter, the mobile phone calls and call any telephone, also do not send text messages. In the absence of any interference of the state, mobile phones, quiet nearly 3 days on standby.
Then enter the experimental stage: the whole equipment good battery into the refrigerator frozen (according to the popular saying, in order to prevent the battery moist, need to use mobile phones wrapped tightly wrap will try to apply during make-up, package, inside of three layers, ensure to battery in vacuum condition. And then, in the film, the bread three layers of newspaper under-voltage completely sealed battery). After 48 hours, remove battery, remove the outer package film, six paper battery for freezing and surface without inflation or distortion.
Cooling after period of time, the mobile phone battery into full and boot. Likewise, the situation would be turned off by the original phone, screen to less power. After a week, mobile phone screen surplus power. At the ninth day, because of a mobile phone to power is not enough. “Frozen therapy” test before and after the performance, for the first time, frozen battery can extend the time of electricity phone.
Cell phone battery is not the “frozen” immortal.”
Freezing method is really an elixir of immortality “battery”? “The internal temperature can make handset battery electrolyte changes, promote just after frozen battery produces chemical reaction.” Zhejiang university’s department of physics professor gao, said.
Foliaceous professor introduction, the use of mobile phone battery charging and discharging process is actually a process. During this period, the battery YinDian within each YangDian lotus lotus and pay. Batteries are increasingly using, because in the normal temperature, the internal energy, thus more active, battery leakage conditions relative frequent. But will a battery into cryogenic environment, the surface of lithium battery electrolyte of lithium membrane and microcosmic structure and their interface will change greatly, causing internal not active, battery leakage current. Therefore, the mobile phone’s battery again after time increases with electricity.
Currently, the handset battery commonly chosen lithium batteries, theoretically, a number of rechargeable lithium battery of about 6000 times. If the battery number of molecules, its internal heat games molecules microstructure was gradually destroy, storage charge efficiency will gradually decrease. “Frozen process to the internal structure of original battery, inside short time may increase in charge of filling ability, but not effective long-term use.” Foliaceous professor says, the microstructure inside cells are destroyed, once again to fully recover is impossible, long-term use this method will accelerate cell phone battery depletion
Mobile phone battery not easily
Mobile phone battery repair methods and multiple versions. Such a claim, use an eraser with mobile phone battery wipe the metal surface contact, can let the use situation of the cell phone battery is good.
This means that the industry was repaired. “In fact, whether the eraser tool or other material, if can remove clean metal fittings, conduce to rust charging status and lasting power.” Responsible for mobile phone store a maintenance technicians.
Hangzhou unicom mobile phone service center, said Mr Face to repair the handset battery, most of the time by way of depth discharge. “Generally, cell phone batteries with shorter time, electricity and not by use of the battery, because memory effects.” Namely, mobile phone during the process, the battery charge will not release the accumulative part of power. Over time, cannot exert efficiency increase power proportion will become larger and larger, this is the so-called memory effects. From a battery, memory effects, the power o space effectively.
Depth of mobile phone is through the discharge inside out, to achieve deeper level power, this needs recharging the adopted some unconventional method. He cited a example, with particular device that connects with a low voltage mobile small bulbs, battery power will transfer to the internal small bulbs, until all light. “Mobile phone needs through the lower voltage slowly deplete power. Under normal circumstances, mobile phone after connect below 3.6 volts rated voltage will be turned off.” Put through power after the handset battery recharging can be used longer.
The personage inside course of study says, at the price of mobile phone battery is too high, and arduous than buying a repair cells, new battery is more convenient. In addition, form good habits, and prolong battery life of a shortcut.

Bad weather, use less as far as possible

Heavy rain and wind in the typhoon, playing with such bad weather, had better use mobile phones, so less effectively save standby time, Because the phone at work process, is through the frequency of 1,800 hz or 900 Hertz, wireless mobile communication with microwave base stations, in the above inclement weather conditions, the transport of microwave wireless communications will affect the quality, to ensure the normal signal transmission, mobile communications to increase power through the methods to protect the right signal transmission, and increase the power consumption of the direct consequence is that it will cause the mobile phone, to shorten the standby time nature. In addition, various RiLing phenomenon, also had better use less mobile phone, because these phenomena tend to wireless communication jamming in this moment, the biggest degree for mobile communication, the standby time will shorten faster.

Sealed environment, use less as far as possible

In the basement or sealing better indoor environment, use less as far as possible, so also can ensure mobile standby time not “shrink”. Because in sealed environment in mobile communication, mobile phones need more power to ensure spending some signal can penetrate ceiling, wall or other, so much the more power is spent at the expense of power.

In addition, the seal of the environment outdoor signals have good communication signals, so in sealed environment, many people using enhanced full rate coding modes, to improve the sound quality, this conversation will cost more mobile phone battery power. Therefore, the position of the weak signal, also had better answer phone call or less.

Independent function, use less as far as possible

The phone every function, all is the need of power consumption, In order to save the limited battery life, you’d better use the less important functions, such as mobile phone, game function, pictures, and Internet functions in no phone, had better not optional activation background, because the lamp light background with cell phone battery needs to power almost. Of course, if you don’t care if the length of the mobile phone standby time, might as well use them to enjoy.

Correct charging, prevent shrinkage

The biggest influence on mobile phones standby time, may be to charge the battery, If the battery is not correct, the standby time may be greatly “shrink”. For a new cell phone battery, the battery started several times, must be controlled in 14 hours, so will the lithium ion battery fully activate activity, mobile phones are the longest possible standby time. If the first few times rechargeable batteries, the time of lithium ion inert, will not be fully activate after you, no matter how charging, cannot make standby time reach maximum state.

Considering the new battery in buying back to the manufacturer in advance, for the first time, before the start charging battery, therefore you have more power to mobile phones has been open not call, then let the automatic shutdown, ensure the battery totally exhausted, then to battery charging 14 hours above.

In each of the battery, the battery must ensure that was full of, then use, but not in power has not been filled, use mobile phones, it will cause the standby time quickly shorten, And in charge, must check whether the battery, if all have more electricity, also cannot charge, so will shorten the standby time.

Reasonable storage, reduce the consumption

Don’t think in the mobile communication process, the consumption of electricity is the biggest, also don’t think save or delete the telephone number of the process, do not need too much power consumption, Actually, the preservation or delete the telephone number of the process, is the constant erase or write to flash chips process that consumes power and normal communication to power, So please don’t delete frequently, telephone number, so often can effectively save electricity. Similarly, in order to avoid mobile frequently read or find information in the SIM card, please don’t save in the SIM card, so much information can accelerate mobile reading speed, saving energy.

Regular maintenance, delaying cost

Many people think, mobile phone and maintenance, maintenance not shorten the standby time. Actually, mobile maintenance well, can ensure that the battery and mobile phone contacts between metal, can contact, If not, then maintenance metal contacts may be oxidation or by flyblown, mobile phones and batteries will appear a contact between the phenomenon, it will cause the mobile cost more power. Therefore, we should be regularly for mobile phones and battery contacts between metal cleaning, to ensure the contacts are not oxidation or not covered by dust and dirt.

If users want to prolong battery charger, besides effective use of time to ensure the quality of the battery, the right skills necessary, because of poor quality of charging method error or chargers will influence the use of cell cycle time and life, just below the relevant charging sort out the skills:
1 battery factory, has carried on the activation treatment, and the beforehand, so all spare battery charging electric batteries, a friend said, according to the setting time still charging shortage, assumptions on standby for the names of batteries battery indeed, this kind of circumstance should extend adaptation to full charge 3-5 times.
2 if a new cell phone battery is lithium ion, 3 ~ 5 times before the charging commonly called adaptation, filling, in order to ensure that the above 14 hours fully activate lithium ion activity. Lithium ion battery, but there is no memory effects of laziness, should give full activated, to ensure the best after use.
3 some automation intelligent quick charger when instructions lights change, only that filled with 90%. Charger automatically change with slow rechargeable batteries. The best will batteries, otherwise will shorten the time of use.
4 rechargeable lithium batteries, not need special discharge, improper discharge will be damaged cells. When the battery to slow to a ho-hum, reduce fast filling way, Time does not exceed 24 hours. Battery after three to five times after full charge of its internal chemicals will be all “activate” to achieve the best effect.
5. Please use the original or well-regarded brand of lithium battery charger, lithium battery charger should use special, and follow instructions, otherwise it will damage to the battery, or even dangerous.
6 there are many users often in charge the phone open, actually such will easily hurt in the mobile phone service, because the process of charging circuit, mobile phone, if there will be hot exotic phone, may produce instant backflow of mobile phone of current internal damage components.
7. The battery life depends on the number of charge, and shall be avoided when the battery charging more electricity can shorten the battery life. More than 7 days phone battery should be completely discharge, sufficient electricity before use.
There are battery, self-discharge nimh batteries by day when the residual capacity will be about 1%, lithium batteries will discharge day by 0.2% ~ 0.3% discharge. In the battery, try to use the special socket, will not be Shared with the home appliance such as TV charger socket.
9. Although mobile network covering area in charge, but in mobile phone, cannot have accepted and call. At this time, can use the mobile phone through transfer function, will be transferred to the side of the fixed telephone calls, in order to prevent the loss, this kind of method for mobile phone is not network covering area or weak signal and temporarily unable to connect also apply.
10. Don’t be exposed to high temperature or cold days, like mobile phones, should not be put in the car, the sun exposure, Or to put their air conditioning, straight blow. When charging, battery has a hot is normal, but cannot make it what temperature “suffer”. In order to avoid the happening of this kind of circumstance, it is better at room temperature, and do not charge anything azan coverage.
11. Nickel cadmium (iCd) — before the battery must ensure the battery totally without electricity, must ensure battery recharging after sufficient electricity.
12 if mobile phone battery for too long, had better not use mobile phone service department to make an application for batteries, also can live with a constant dc voltage, adjusting voltage, current 6V for 5 ~ ~ ~ 500 600mA reverse connect battery. Note that a touch namely, the most repeated three times, after such treatment, reoccupy original battery charger for “setting”.
When the battery is not as long as possible, for no protection circuit batteries charging should cease after the battery, otherwise will affect performance by fever or overheating.
14 lithium ion battery must choose special charger, otherwise it may reach saturation, affect its performance. After charging, should avoid to put in more than 12 hours on the charger, long-term need not when should make battery and mobile phones

Some common sense: the handset battery, lithium battery is not usually considered memory effects of the manufacturer, this is misleading. Lithium batteries are still memory than nimh batteries, just slightly. If the battery is no long-term using lithium batteries, also can appear serious memory effects. Therefore, lithium batteries still take a charging method to ensure the use of time.
Second, appear memory can be activated. Here’s the key is how to discharge. Never covet convenient use first wires of short-circuited batteries, poles caused damage to the battery! Some charger, but this function is discharge have flaws. It is far better than the current when the discharge of mobile phone, the works of current battery are also damage. Besides can determine whether have finished release. The best way is to use mobile phones, of course, the natural discharge needs time. Smoke a weekend at home when not in use mobile phones, let the standby in turn again after the boot discharge. Often repeated several times immediately after the boot is not needed, then don’t think already finished, should will discharge is placed over a period of time to boot. This repeatedly until the phone placed an hour discharge still cannot again above, discharge even basic on end. With the new method of charging activated when buy, charging to ten hours above, then add two to three hours to recharge. If you have plenty of time, can make it two or three times repeatedly charging.
Third, don’t wait for mobile phone use time to do a short time, it will activate is caused because of inadequate discharge battery memory still has remaining. The use of activated time will still be very short. Best used in time when they take significantly reduced activation measures. The use of mobile phone for seven days, the time is reduced to four days when using the time around the activation. This weekend, you can easily finish activation.
Four, sometimes buy or re-activated cell phone use time is not long after, this is obviously not drop, and memory effects may be caused by poor contact. The best in reactivated prior to the mobile phone battery and a connector on cleaning with small a cotton swab or toothpick, wrapped in paper towel touchs a few alcohol on it. Do not use to shave, that person will be aggravated contact undesirable. No alcohol can substitute. High liquor On after dry with paper towel immediately, lest cause overflow alcohol at the open circuit batteries.
Five, sometimes the battery is not necessarily the logo appears Spaces without electricity or appeared memory effect, it may be that mobile phone battery logo function. This usually appears in the mobile phone use after period of time, the judge’s way is very simple: don’t immediately when space charge, wait and see if the cell phone soon automatic shutdown. Of course, not every check to have period of time attention or necessary. Otherwise it will accelerate cell memory effects. Of course not all mobile phones will appear this kind of situation.
Sixth, the cell phone battery is mobile phones, it is soft rib of all components in the shortest service life. Unfortunately it is hard to buy original battery replacement. As to why then asked manufacturers. If the original everywhere, the backup battery to sell mobile phone manufacturers who sell? Ha ha, finally it some subject.