Do not continue to use it in this situation.
The reason why the external battery swells is basically caused by the expansion of the soft lithium battery. Although it can be charged and discharged, continued use is not recommended for safety reasons. , it is best to replace it as soon as possible; if the power bank is bulging. If it cannot fit completely on the desk or there is a bulge, liquid leakage, odor, excessive heat, etc. appear when using a high current charger, it is best to replace it as soon as possible. it is recommended not to continue using it.
What is the difference between external lithium batteries and lithium polymer batteries?
Can I use a power bank as an external power source to replace a broken cell phone battery?
Answer: No!
1 The power bank contains multiple 18650 lithium batteries or soft pack connected in parallel. Its rated voltage is 3.7V and full charge is 4.2V, the mAh size of. the power bank depends on the battery and the total capacity is determined by the battery size. To increase the voltage, the only way to increase the voltage is to rely on the internal panel electronics to generate a voltage increase to 5V1A. or 2A for use in different mobile phones.
2 When charging a mobile phone, the power bank has the same function as the mobile phone adapter. It also has three stages of constant current flow and constant voltage when the mobile phone battery is full. , it will automatically cut off the load from the circuit board components. When it remains on standby, no current is emitted, soNote that the power bank cannot work all day.
3 The 5V power of the power bank does not match the 4.2V power of the mobile phone. The 5V power entering the mobile phone does not enter the battery directly. is delivered to the battery through the voltage stabilizing circuit of the cell phone, so plugging the power bank into the cell phone socket cannot operate the cell phone! The startup and high brightness of mobile phones require a lot of current, and the power bank output cannot meet the startup current.
4 There are three battery cells in a mobile phone, which correspond to the three battery cells. When the battery is charging, the battery also powers the mobile phone. For most mobile phones manufactured today, remove it. the battery and charge it with thecharger. Unable to turn on,
5 If you want to connect your mobile phone to external power, you need to remove two items:
< p> a) Directly solder the 4.2V lithium battery of the power bank into the -4.2V socket of the mobile phone. You can create a model equivalent to the original battery. . Remove the protective plate from the old battery and install it on the fake battery. Put the positive and the negative. The wire is connected to the lithium battery, so that the power bank cannot be separated from the mobile phone. power, the power bank can be charged without affecting the operation of the mobile phone. I can do this method simply, but I can only use it as a landline phone at home.
Thanks for reading!
If your residence has a low rate of power outages or if you have a Xiaomi power bank, youcan try keeping your phone charged and using it as a landline phone. If you have practical skills, you can pass a wire from the positive terminal of the battery to the positive terminal of the USB power supply (suitable for 5v2a mobile phones. At this time, your mobile phone battery can be saved) . or deleted. Keeping the function of the battery protection board is to let the machine think that the external power supply is the mobile phone battery, and it only uses it when the mobile phone self-tests. After that, an external cell phone adapter or power bank will be used to provide power. Modification is risky and the consequences are at your own risk.
My current mobile phone has been using this method for over a year. However, I haven't experimented with cell phones with power above 18W.
If the cell phone battery voltage is the same as the power bank battery voltage, it is OK, but you need to keep the protection plate and the connector of the original battery, and finally connect the positive and negative poles of the original battery in parallel to the charging station. On the external battery, if the original battery is disconnected, the capacity will be huge instantly. I connected two 18650 in parallel to the previous Nokia 6120, and the pure. standby time was more than one month.
Power Bank Can it be used as an external power source for cell phones instead of batteries? Of course you can and you can't. Indeed, as a portable device, a mobile phone must have a power supply, that is to say a battery. Before Apple's mobile phones took the world by storm, most te batteriesCell phones were replaceable.
If a cell phone battery is damaged or you want to replace the battery, you just need to buy a battery and ordinary people can replace it. In addition, in order to ensure that the voltage supplied by the mobile phone is stable enough and the current is pure, and for the safety of the mobile phone itself, it is not like a laptop. It does not require a battery and can be. powered by an external power supply. So if you remove the battery from your phone and plug in the power bank to charge it, you will find that the phone cannot be turned on.
So if your mobile phone battery is damaged and you remove the battery, plugging in the power bank cannot replace the battery because the mobile phone cannot not be lit. Of course, if the battery of your mobile phone does not havebeen removed, plugging in an external battery can replace the battery to power the mobile phone. But as for the question of size, I think you know that without me telling you.
Yes, the circuit inside the power bank has charging and voltage surge protection function. Simply connect the power bank's output to the mobile phone's charging port.
This should not work. I remember the MX4pro I was using had a battery problem at first, I don't know what the problem was precisely. has just been plugged in with the charger. When you press the power button to turn on the phone, there will be a response, but it will not turn on and then disappear. I have no response when pressing the power button. I tried it several times and it always looked like this. I just guessed that the battery wasIt broke anyway, so I didn't worry about it.
Later I had nothing to do and wanted to prove if it was the battery. So I bought a very cheap battery from Taobao (to be honest, I was very scared, I was really afraid that it would explode [laughing and crying]), then I took the battery out of my phone . When I removed it, I found that the battery cable was broken. . I don't know if it was broken accidentally when I took it apart or if it was broken before [the face covering], but it turned on after I replaced the battery [laughs]. Ran But the good times didn't last long and he died shortly after. . [Face break] I haven't touched it either
The Xiaomi power bank is very good. It contains lithium batteries, not several dry cells connected in series. phone to be on standby It takes a long time and needs to be equipped with a power bankqualified training
Certainly not possible
I don't know what you want to do. But we must overcome
1. Voltage
There are batteries. in power banks, secondary batteries i.e. can be reused
The output voltage of the power bank is generally 3 to 5 volts
The cell phone battery directly powers the cell phone when the voltage does not exceed 0.5 volts
2. Security Issues
Everyone knows this
So it is still not recommended to do this < /p>
It is best not to do this. In addition, it is recommended to use the 360° charging protection function when charging.
1. Lithium cells and lithium-ion batteries (polymers are also lithium-ion batteries). Lithium batteries are a type of energy materialnegative electrode made of lithium metal or lithium alloy due to their very active chemical properties. lithium metal, lithium The processing, conservation and use of metals have very high environmental requirements.
2. The negative electrode of the lithium-ion battery is made of graphite and other structural materials interposed. In the battery, lithium ions move between the positive and negative electrodes, making it much safer than the lithium battery.
3. Lithium-ion batteries and lithium-polymer batteries The electrolyte of lithium-ion batteries is liquid, while the electrolyte of polymer batteries is gel or solid, which is safer.
4. The packaging of lithium polymer battery cases and lithium batteries is slightly different. Lithium batteries are usually packaged in steel shells (18650 or 2320 button type), while lithium batteriesthium polymer are packaged in aluminum-plastic packaging. movies. Packaging, i.e. soft batteries.