The differences between lithium polymer batteries and ordinary power bank batteries are as follows:
1. Ordinary power bank batteries: Lithium-ion batteries, commonly known as "lithium batteries", are currently the battery system with the best overall performance. The negative electrode of lithium-ion batteries is a carbon material, such as graphite. The positive electrode is a transition metal oxide containing lithium.
2. Lithium polymer batteries: Lithium polymer batteries are a new generation of batteries that entered the market in large quantities in 1999. Lithium polymer batteries are basically the same as lithium ion batteries, except that the electrolyte is a solid polymer instead of a liquid electrolyte.
3. Lithium polymer batteries have greater capacity than lithium batteries in the same volume, andthere is no memory effect (lithium-ion batteries still have a memory effect, but they are smaller). Lithium polymer battery is actually a gel-like substance that is easy to process into various shapes and does not contain harmful heavy metal elements. This is a “green battery”.
Detailed information:
A general battery has three elements: a positive electrode, a negative electrode, and an electrolyte. The so-called lithium-polymer battery refers to a battery system that uses polymer materials in at least one or more of the three cells. In lithium polymer battery systems, polymer materials are mainly used in the cathode and electrolyte.
The material of the positive electrodeuses conductive polymers or inorganic compounds used in general lithium-ion batteries. The negative electrode often uses lithium metal or lithium carbon interlayer compounds, and the electrolyte uses solid or colloidal polymer electrolytes. organic electrolyte. Because there is no excess electrolyte in lithium polymer, it is more reliable and stable.
Lithium polymer batteries use file alloy as the positive electrode, polymer conductive materials, polyacetylene, polyaniline or polyparaphenol as the negative electrode, and organic solvents as the electrolyte. The specific energy of lithium polyaniline battery can reach 350W.h/kg, but the specific power is only 50-60W/kg, the operating temperature is -40-70 degrees, and the service life is about 330 times.
Compared to lithium-ion batteries, the characteristics of batterieslithium-polymer tteries are as follows:
1. Relatively, the battery leakage problem is improved, but it is not completely improved.
2. Can be made into a thin battery: With a capacity of 3.6V 250mAh, its thickness can be as thin as 0.5mm.
3. Batteries can be designed in different shapes.
4. Can be made into a single high-voltage battery: Liquid electrolyte batteries can only obtain high voltage by connecting multiple batteries in series, while polymer batteries can be made into multiple batteries in a single battery because they do not have no liquid.layers to achieve high tensions.
5. The discharge capacity is theoretically 10% higher than that of lithium-ion batteries of the same size.
Lithium polymer batteries (Li-polymer, also known as lithium-ion polymer batteries) have manytwo advantages such as high specific energy, miniaturization, ultra-thin, light weight and high safety. Based on these advantages, lithium polymer batteries can be made into batteries of any shape and capacity to meet the needs of various products and they are packaged in aluminum-plastic packaging, so that internal problems can manifest immediately through the outer packaging, even if there are safety hazards, it will not explode, it will only swell.
In polymer batteries, the electrolyte plays the dual function of separator and electrolyte: on the one hand, it separates the materials of the positive and negative electrodes as a separator to prevent self-discharge and short circuits inside the battery; on the other hand, it conducts lithium ions between the positive and negative electrodes like an electrolyte. Polymer electrolytes have noonly good conductivity, but also possess the unique characteristics of polymer materials such as light weight, good elasticity and easy film formation. They also conform to the development trend of light, safe, efficient and chemical energy sources. ecological.
a. Lithium core capacity indication circuit
The lithium core capacity indication circuit is composed of the XC61CC series voltage monitoring chip.
b. Battery core protection circuit
The battery core protection circuit consists of three parts: overcharge protection, overdischarge protection and overheat protection. -The restoration fuse constitutes triple protection, greatly improving the safety of lithium cores.
c. Charge management circuit
The charge management circuit uses CN3066, which dividesthe charging process into four parts: trickle charging, constant current charging, constant voltage charging and maintenance charging, so mobile power supplies can store energy to the greatest extent.
DC-DC boost circuit
The DC-DC boost circuit uses the MAX1771 integrated chip, which can maximize the release of lithium core capacity within a safe range for reach the goal. for the purpose of powering digital equipment.
e. Function expansion circuit
Function expansion covers common needs involved in outdoor activities, including high-brightness emergency night lighting, outdoor anti-theft security alarms and camping mosquito repellent.
References:
The differenceence between polymer batteries and lithium batteries
The difference is that the positive and negative electrode materials and electrolytes of liquid lithium ion batteries and polymer lithium ion batteries are made of different materials. One contains liquid and the other does not. Another form of soft bag is called a lithium-ion polymer battery.
SoftLithium Battery:
Soft-packaged lithium battery is just a liquid lithium-ion battery with a polymer shell. Structurally, it is packaged in aluminum-plastic film. If there is a safety risk, the soft battery will only swell and crack.
Polymer battery:
Lithium polymer battery (Li-polymer, also known as lithium polymer battery): It is also a type of lithium-ion battery, but it is different from the liquid battery. Lithium (Li-ion) battery is a new type of batterie which has many obvious advantages such as high energy density, smaller size, ultra-thin, light weight and high safety. In terms of shape, lithium polymer batteries are ultra-thin and can be made into batteries of any shape and capacity to meet the needs of various products. The minimum thickness that this type of battery can achieve is up to 0.5 mm. Its rated voltage is the same as Li-ion 3.7V, and there is no memory effect.
The cell phone has been used for 2 years and has been recharged several times. Should I replace the battery?
I think polymer batteries and lithium batteries are two different types of batteries.
There are differences in chemical composition, shape and performance. Polymer batteries use polymer materials as positive and negative electrode materials, which cancan have more flexible shapes and higher energy density. Lithium batteries are generally cylindrical or square and use lithium metal or lithium alloy as the negative electrode material. Polymer batteries have higher safety and stability.
The appropriate battery type should be selected based on the specific application requirements.
Under normal circumstances, the lifespan of a cell phone lithium battery is about 500 charge and discharge cycles. One cycle means that the battery power goes from 100% to 0. If the battery is used at 20% of its power and then recharged each day, this equates to 0.8 cycles per day. In two years, the battery life is almost the same. even.
Although the battery can still be used after 500 charge and discharge cycles, the user finds that the power is visibly insufficientfisante. In the past, it was enough to recharge it once a day, but now you have to recharge it two or even three times a day. Although users can currently think of many ways to extend battery life, such as downloading battery optimization software or even finding ways to restore battery power. Unfortunately, the lifespan of lithium-ion polymer batteries is irreversible and there is currently no technical way to repair long-used cell phone batteries.
So when your cell phone battery is obviously not enough, the best way is to replace the battery. It is relatively cheap to replace domestic cell phone batteries. For example, the Xiaomi Mi 6, launched two years ago, the official price of the original battery is 59 yuan, plus labor costvr of 40 yuan, the total can be 59 yuan. be replaced for 99 yuan.
Considering that the performance of previous generation flagship phones like Xiaomi Mi 6 is still quite adequate, it is still very cost-effective to spend 99 yuan to "rebirth " battery. .
HoweverIf you need to replace the battery of an Apple mobile phone, the cost will be relatively high. Take the example of the iPhone 7 of the last two years. Apple's official after-sales price for replacing the original battery is 359 yuan. For iPhone X level and later models, the battery price can reach 513 yuan. . Although Apple officially has no labor charges for battery replacement, the battery price of more than 300 yuan is still quite astonishing.
Thus, some Apple mobile phone users will now try to replace the batterye by a third party brand. Nowadays, the batteries produced by some old battery manufacturers are no worse than Apple's original batteries, and the prices are much cheaper. You can usually buy a good third-party battery for around 100 yuan. If the user has strong practical skills, he can follow the instructional videos on the Internet to replace the Apple mobile phone battery by himself.
However, it should be noted that most Apple mobile phone batteries are stuck in the fuselage with double-sided tape. Under normal circumstances, they should be heated with it. an air gun before you can successfully remove them. If you use tweezers or other hard objects to forcefully remove the battery, the battery shell may be punctured, causing an internal short circuit or even spontaneous combustion. Therefore, if you are nots not absolutely sure, it is best not to try to replace the battery yourself. You can choose to buy a third-party battery and go to a repair shop in the electronics market to replace the battery, and the price is. not very high.
My cell phone is a 6S and the battery was replaced around May last year. The battery status at that time was half a day. 100% battery in the morning, 40% left around ten o'clock. I don't dare to browse Weibo when I go out, and I can't watch Sister ** on TikTok. A power bank is essential. After I couldn't take it anymore, I went to Taobao Fujishima to replace the battery myself.
It is certain that Taobao's battery is not as good as the original one. Basically, battery performance will start to decline after about five months. and 100% power in the morning can lastr until about 3 p.m. Now, for almost a year, battery life has been significantly reduced, with at least two charges per day...
Cell phone batteries on the market are now mainly divided into lithium-ion batteriesand lithium-ion polymer batteries. The original batteries are generally lithium-ion batteries, while Taobao batteries are basically lithium polymer batteries, and their performance is necessarily lower than that of the original batteries.
Since its birth, the lifespan of a lithium battery has been determined - about 500 charging cycles. Charge cycle here refers to charging the battery from 0% to 100% and then using it from 100% to 0%. Once the number of charge cycles is exceeded, battery life will drop. Right now, it's time for everyone toe replace your cell phone or replace its battery.
1. Lithium batteries are most afraid of high temperatures. Try to avoid charging them when playing with them. There are many reports of injuries caused by explosions on the Internet;
2. And the chargerIt cannot be used universally. Mixing different rechargeable batteries will accelerate battery aging.
3. The optimal state of lithium battery power is 20%-80%. %. Remember not to charge for a long time and not to charge when the battery is too low;
4. Try not to replace the cell phone battery by yourself. The replacement process will inevitably cause a short circuit. circuit or battery leakage, which is very dangerous. In mild cases it will burn the operator's hands and in severe cases it will explode.will dare. Make sure you pay attention to safety.
1. Scud, I vaguely remember that when I changed the flip phone battery ten years ago, I had Scud, and I'm definitely pretty skilled;
2. Pinsheng,
p>3. Noxi
4. Baseus
Generally, the purchase price of batteries is about 100-1500. Don't choose those that are too strong. cheap, because the quality is usually unreliable, and don't choose one that is too expensive. This is really not necessary because a cell phone that has been used for several years may not be worth hundreds of dollars.
I wonder if anyone has any good battery brands to recommend? Please leave your valuable opinions in the comment box!
First of all, let's not talk nonsense. If you want to continue using this phone, you must replace the battery because you cannot keep the power on.boner on your body.
Current technology has increased the number of charging times of lithium batteries up to 500 to 600 times, which means it takes about twice to charge one new mobile phone from 100% to 80% For about a year, it is estimated that most of us will rush once a day. Perfectly meets daily needs.
Let's talk about my two cell phones. The first one was used for a year and a half and the battery was no longer durable, it could only last more than half a day, so I changed. the battery myself. The result The battery was replaced, but the screen was broken. I spent over 400 to buy a screen myself and replaced it.
The second one was just replaced three months ago, and this one has been in use for two years. After replacing the battery, the phone came back to full health. We can say that the waking time is comparable tothat of the new official phone. You can play games for more than 4 hours. My cell phone was purchased in 2017.
The most important thing is that battery replacement has a lot to do with the cell phone. If your cell phone costs a thousand yuan and you've been using it for two years, it's not worth spending another 100. yuan to buy a replacement battery, so we need to do a gender-price comparison.
If you are not skilled enough to change the battery, go to a mobile phone store to change it. It's better to buy the battery yourself, because the batteries from the mobile phone store are really not good.
No matter how many times you charge it, the key is to check the phone's battery status to see if it is normal. What type of cell phone health is normal? We feel it:
iPhone X has been used for over two years and the current battery status is around 86%. I will not replace the battery of this phone because it does not meet the standards given by the iPhone (the battery capacity is 80%).
When the battery is 80%, the battery health cannot meet our requirements for mobile phones. We saw from the official website that according to the iPhone battery life regulations, about 80% of the battery cycles are about 500 times. Currently the battery needs to be replaced.
Actually, when we use the battery, if the battery power is more than 80%, we may not be so worried. In fact, in 2 years, depending on the battery under normal conditions, health may be poor. have It's completely below 80%.
Why do we value 80% so much? the reason is simple. In 80% of cases, aOn the other hand, the storage life of the battery will decrease; on the other hand, because the mobile phone will implement performance mode, like the iPhone, there may be a lag, so-called frequency reduction.
If you feel that your phone is stuck or has no battery, you can consider upgrading your phone.
1 It depends on the type of mobile phone you have and whether the battery consumption time is the same as before. I have an iPhone 6s and haven't replaced the battery in 4 years. I gradually noticed that the battery was becoming less and less durable. Sometimes I don't do anything after going to bed at night and the battery is reduced. by 10% the next day.
If you have an Apple phone, you can check the maximum capacity of the battery once it is fully charged by following the steps below:
1. Open the phone settings
2. Select the battery
3. Select Battery Status
Then check the maximum capacity of normal batteries. I just replaced a battery this year, and this. the battery which has been used for 4 years still has 80% charge, this is equivalent to a full charge, although it shows 100%, but the actual power is only 80%. If it is below 85%, it is recommended to replace the battery.
The lifespan of most lithium batteries is around 500 cycles, including iPhone batteries. After about 500 times, the battery performance will decrease and the battery capacity will decrease very obviously. If you want to maintain battery life and experience, it is more appropriate to replace the battery.
If you charge a lot, the battery may have worn out more than 20% in less than 2 years, leaving less than 80%.
Unless you want to changeger of cell phone, I suggest that it is better to replace the battery, because insufficient battery capacity will seriously affect the battery life. Additionally, some batteries will expand, and after expanding, they may even press on components such as displays, causing extrusion issues. Of course, if it's an iPhone, some models will reserve some space in the battery compartment to allow the battery to expand. This is why a third party can install a larger battery, because the larger battery takes up the reserved space.
It must be said that the battery is the most easily lost hardware in mobile phones, and its loss is irreversible, no matter how you flash the phone or how advanced the algorithm is , battery loss is. a loss.
Apple users can check your battery consumption using informationbattery status information ~
Many brands offer after-sales service for battery replacement. I myself went to Meizu and Huawei for after-sales replacement. batteries are not expensive. The cheapest model costs a few dozen yuan, while the most expensive model costs more than a hundred yuan. This already includes the labor cost of the master.
So, if you have an Android phone and you do not want to change your phone, then you can definitely go to an after-sales point to change the battery. The price is not expensive and you can restore. battery life, which is great.
If you have an iPhone, there's nothing you can do. The cheapest official after-sales service costs more than 300, and the most expensive costs more than 500.
Of course, you can also find third parties to replace it, including somee-commerce platforms that offer battery replacement services! The price is around 100-200, which is quite reasonable.
The frequency of battery replacement is determined by how often the phone is used and charged. Generally speaking, the charging and discharging frequency of mobile phone batteries is 300-500 times, which means that a new mobile phone battery needs to be replaced within one or two years. When should the battery be replaced? It depends on battery life. When we query the battery details, we can usually see that the battery life is a percentage, which represents the loss of the battery. Generally speaking, the actual capacity and design capacity of the iPhone can be queried through software. Battery life is the value of actual capacity/nominal capacitye, and the resulting percentage is the current battery life. When the battery charge cycle reaches about 350-500 times, the maximum battery capacity drops below 80%, which is the standard when we need to replace the battery. Apple officially recommends that if the battery life is below 80%, we should replace the battery.
For other brand mobile phones, you can check the battery status by downloading detection software.
When the battery life is less than 80 %, the battery can still be used, but the endurance will be greatly reduced, unexpected shutdown may occur when the battery is low. So the battery life is less than 80%, which indicates that we need to replace the battery.
The mobile phone has been used for 2 years. The need to replace the battery depends on the performancees of the battery. Since ordinary users do not have professional equipment, they can evaluate it based on battery life.
Affected by the underclocking incident, Apple added a status battery health Conduit options. According to official Apple data, the battery should be replaced when its health drops below 80%.
Therefore, by checking the battery health, you can assess whether your iPhone battery needs to be replaced. My iPhone 8 Plus battery health is still at 85%, battery life is still good, and there is no need to replace the battery at this time.
Since most Android phones do not have the function of test the condition of the battery, you can use the battery life to determine if the batterie needs to be replaced. Under normal circumstances, the battery life of an Android phone is around 24 hours, and for heavy users, it is only around 15 hours.
In the system power options, if you find that the battery life is more than 20 hours, there is almost no need to replace the battery. battery. For my Android phone, the battery health is within the normal range.
Of course, the need to replace the cell phone battery can also be assessed based on the usual battery life. If you feel that your phone's battery life is significantly shorter or that the battery charge is diminishing too quickly during normal use, this is evidence that the battery needs to be replaced.
If the subject's cell phone has been used for two years, the battery is indeed notnot very good. After two years, it has been charged almost once a day, and it has been charged almost 600 times. battery life has been practically exhausted. Second, there is still use. During the process, charging and using mobile phones, etc., still cause a lot of battery loss.
So, battery replacement depends on the type of mobile phone you are using. If you are using Apple mobile phone or domestic flagship mobile phone model such as Huawei, Xiaomi, OPPO, Vivo. , etc., then you can consider replacing the battery. For some sub-headlight models, it's not worth it. After all, the price of mobile phones is so high, and battery replacement is also a cost. They have a common problem. They will become sluggish after prolonged use, and after two years they will still be stuck. There are very few port phonesable to function properly.
After checking, the official battery replacement price of the above brands is roughly around 80-150 yuan. Apple may be slightly more expensive. You can check the price on the official website of each brand, or you can do so. choose some third-party websites (such as Suning.com, etc.) that also offer battery replacement services!
The subject can refer to the suggestions below and consider them holistically!
If your cell phone battery has been used for two years and you want to continue using this phone, I recommend replacing the battery.
Because during these two years, as the mobile phone battery continues to be charged and discharged, the battery life will become shorter and shorter, and the energy storage will not will not correspond to the reference value. The capeBattery power will decrease and consume power more and more quickly. At this point, it is recommended to replace the battery with a new one. To improve excessive power consumption cases.