The content of the article
- The principle of operation of the telephone battery
- Why does the battery run down?
- Battery capacity and shelf life
- How to check the phone battery
- Phone Battery Recovery
- Using a dedicated charger
- Recovering phone battery capacity from another battery
- Using a resistor and a native charger
- Recovering a phone battery with a fan
- Resuscitation of the battery cold
- How to restore lithium battery after deep discharge
- When the battery is flat
- Fully charge and discharge the phone’s battery
During the use of the mobile device, the battery will certainly consume its resource and “age”. This is manifested in a rapid decrease in charge and slow charging. Sometimes the device after turning off simply does not turn on and does not respond to button presses. This is a characteristic and familiar phenomenon for lithium batteries, which are currently used in all smartphones. You can purchase a new source of charge, but if you want to save, there are options for self-reanimating the battery.
The principle of operation of the telephone battery
Most gadgets have a battery function. There are several types of batteries for phones:
- Ni-Cd – Nickel-cadmium;
- Ni-Mh – nickel metal hydride;
- Li-ion – lithium-ion.
NiCd batteries have the largest amount of charge; they are easy to manufacture, store and operate. Often used to power medical equipment, radios, powerful tools, and professional camcorders. NiMh batteries produce more heat during charging, requiring a sophisticated algorithm to determine the total charge. For this reason, most of these batteries have an internal temperature sensor. NiMh is charged for a long time (2 times the duration of recharging the NiCd charge), but their capacity is much larger.
When recalculating indicators per kilogram of weight, Li-Ion batteries are 2 times higher than NiCd. For this reason, lithium-ion batteries are now used in all phones, laptops, where the weight of the product is important in addition to battery life. The design of the battery itself is very simple: two graphite sheets of lithium oxide and cobalt, which are greased with an electrolyte and rolled up.
Why does the battery run down?
Owners of smartphones in a year or a year and a half begin to notice a decrease in the operability of the device, the charge quickly goes away. This can happen for several reasons, some of which can be solved programmatically (disabling unnecessary functions, wi-fi, virus cleaning), while others can only be technically fixed by restoring the battery capacity. Popular reasons why a battery runs out are the following factors..
- Increased load on the device
The vast majority of smartphones run on the Android operating system, which, due to complexity and open source code, is prone to crashes; optimization of the OS is at a low level. Several dozen programs work automatically in the background, even in standby mode (with the screen off) they continue to “eat” the charge and lead to a rapid decrease in battery capacity. Many of these background programs are not needed by the average user and should be disabled.
The Android system is free, so it has gained such popularity, hackers could not get around this and began to create malware for it. The activity of such viruses leads to a rapid decrease in the battery power of the phone. In addition, the performance of smartphones is falling even with strong processors. The following signs (except antiviruses) will help determine the presence of “pests”: the appearance of advertisements in the wrong places, the temperature of the gadget’s body, the braking of the system.
- Bad battery
Damage to the battery leads to rapid energy loss. This occurs more often with prolonged use, usually after a two-year period. This is an inevitable process of consuming equipment. Sometimes a decrease in the nominal capacity of the battery occurs due to contamination of the anode and cathode. This slows down the physicochemical processes that affect the battery’s ability to release the accumulated charge. Using some methods, you can achieve the initial battery value.
Battery capacity and shelf life
Recovery processes with constant use of the device will not be able to return completely the same amount of voltage. Over time, the battery power decreases, it wears out and becomes unusable. Li-ion batteries have a shelf life of 2 years from the date of manufacture. During this period of time from 20% to 35% of their power is lost. Restoring an old battery is not an easy task, so pay attention to the date of manufacture of the phone.
How to check the phone battery
For the test, you need a device called a voltmeter, which helps measure the voltage of the equipment. It is recommended that you first conduct a visual inspection of the battery. If the battery was in operation for a long time, then its structure could undergo deformation, for example, to swell. If liquid contacts the contacts, then oxidize. These factors affect battery capacity and lower specific values. To check the battery you need:
- remove the battery from the device;
- apply a positive voltmeter contact to the positive pole;
- do the same with the negative;
- set the nominal value of the measured voltage in the settings.
The voltage that you received when measuring and will display the degree of battery charge. To evaluate the indicator, you can use the following values:
- less than 1 V – you need to charge the battery;
- about 2 V – the battery is charged, the capacity is average;
- 3.6-3.7 V – fully charged, high capacity battery.
Phone Battery Recovery
If desired, you can try to restore the “life” of the battery using some methods. Restoring a smartphone’s battery is a temporary measure, the device’s life is not endless, so at some point the battery will still have to be replaced. Below are described methods for increasing battery capacity that you can do on your own at home. For some, you will need additional tools, the ability to work with your hands. If you are new to this area, it’s better not to restore, but to buy a new battery.
Using a dedicated charger
You can restore a Li-Ion battery with a multimeter and an “Aimax B6”. The last device is easy to buy, it is well suited if you need to reanimate the battery at home. First, we check the battery itself with a multimeter. Connect it by setting it to voltage measurement mode. In the presence of a deep discharge, the multimeter will show this in the minimum value of U in millivolts.
Sometimes the controller does not measure the actual amount of voltage. There are two conclusions – plus and minus, which directly go from the battery to the controller. The voltage at the terminals is usually 2, 6 V, but for lithium batteries it is not enough. To get the real voltage, you need to charge the battery to 3, 2 V. Then the multimeter will start to reflect the real voltage. It is necessary to ground the negative wire, and connect the red one to the power supply, there is no need to set a large current.
Aimax is convenient in that it supports several modes that differ for different types of battery phone. Activate the appropriate mode (lithium-polymer or lithium-ion), set the voltage to 3.7 V, and charge – 1 A. The voltage will begin to rise, which indicates a successful recovery of capacity. The indicator should reach 3, 2 Volts and the battery will “swing”. Then it can be inserted back into the tablet, phone or fully recharged using a native device.
Recovering phone battery capacity from another battery
You will need any other 9 Volt battery, electrical tape, a thin simple wire. This do-it-yourself phone battery recovery will be interesting for all electronics lovers. The capacity can be restored by the following algorithm:
- Route the wiring to the terminals of the battery you want to restore. Each pole needs its own.
- You can not short circuit the plus and minus with the same wire, this will lead to a short circuit and you can no longer restore the battery.
- Fix the contacts with electrical tape by marking + and -.
- Connect the positive contact to the “+” on the 9-volt battery, in the same way the negative.
- On this side, also fix the contacts with electrical tape.
- After some time, the battery should start to heat up..
- When the battery becomes noticeably warm, you need to disconnect it from the “donor” and put it on the phone to check its operation.
- After turning on, immediately check the charge level, set the mobile to charge in standard mode.
Using a resistor and a native charger
This method is simple, you don’t need special appliances or devices, you only need your own charger. Phone battery repair will require the following:
- resistor device with a nominal value of at least 330 Ohms, maximum – 1 kOhm;
- 5-12 V power supply (battery charger is suitable for the phone).
To restore the battery you need to perform the following simple connection diagram: minus from the adapter to minus the battery, plus is output through the resistor to plus. Then you need to apply power and the voltage on the battery will begin to rise. You should bring it to an indicator of 3 V, this one will take from 10 to 15 minutes. Then you can use the battery in the usual mode.
Recovering a phone battery with a fan
You will definitely need a power supply unit with an output voltage of at least 12 V. Connect the corresponding one from the device to the negative connector of the fan, also connect the negative connector and fix the wires manually on the battery. Connect the power supply to the outlet, the fan should start spinning, which indicates the supply of current. You should not keep charging for a long time, 30 seconds are enough until the required U indicator. This will help to “revive” the battery and charge it without problems from a conventional outlet.
Resuscitation of the battery cold
This option, how to restore the phone’s battery rarely works, but you can try, because there is no risk of spoiling it. It is necessary to put the battery in a plastic bag (foil or paper does not fit) so that water does not get into the phone. To reanimate the phone’s battery, you need to put it in the refrigerator (freezer) for 12 hours. After cooling, let it warm up in the room, do not forget to wipe it dry. With the help of freezing, it is possible to restore a little capacity so that it can be charged through a conventional outlet.
How to restore lithium battery after deep discharge
If you do not use the device for a long time, a deep discharge may occur. The voltage drops to unacceptable indicators, the device is shut off by the controller and it cannot be charged from the outlet. In this case, the battery can only be restored by soldering the protection system. Then it is powered using a special device, for example, Turnigy Accucell 6. The device itself will monitor the battery recovery processes.
Using the “Type” button, you can select the charge program. Press the “Start” button, then for Li-ion – 3.5 V, for Li-pol – 3.7 V. The current should be set to 10% of the nominal battery capacity. To do this, click on the buttons “+” and “-“. When the value reaches 4.2V, the mode will begin to change to “voltage stabilization”. The device will output an audio signal after charging is complete, and the message “Full” will appear on the screen.
When the battery is flat
With battery degradation, physical deformation may begin. Bloating makes the device unusable, but you can try to restore it. You need to find a kind of cap on the battery, which is located under the sensor board. Next you need a needle or a nail. Puncture this cap, you need to do this carefully, separating the upper part with the board from the battery housing with the contacts. Wait for all accumulated gas to come out of the case, put the metal plate back in place. To do this, you need:
- put the battery on a flat surface;
- put the plate on top;
- easy to squeeze her body;
- when it is aligned, solder the board back;
- close the puncture site with waterproof glue.
Fully charge and discharge the phone’s battery
This is the easiest, but ineffective way to restore battery capacity. You need to “drive” the battery several times until it is completely discharged, and then completely restore it. For this:
- Download a resource-intensive utility (AnTuTu) or a game and completely land the phone (before turning it off);
- connect the power and wait for 100% charge;
- repeat the previous paragraphs 3-4 times.