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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
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Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
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release time:2024-07-05 Hits: Popular:AG11 battery
Will fast charging technology cause damage to the 18500 battery?
I believe that mobile phones have become the favorite of most people nowadays, and if everyone's mobile phone power drops below 20%, they will probably have some bad emotions, such as fidgeting. After all, it's like going out without a wallet. The mobile phone is easy to run out of power and has become an object of anxiety for everyone nowadays. Mobile phone manufacturers naturally understand this, so they have responded to the needs of the majority of users. After all, users are the foundation. Without users, who will buy mobile phones? So the fast charging function came into being. It can even be said that fast charging is the greatest invention in recent years. Many people can never go back after using fast charging. Now, thousands of yuan phones have begun to come standard with this technology, but another problem has arisen at this time.
What people are facing now may not be how fast the mobile phone charges. After all, Xiaomi's 100W fast charging has been developed, and 40W fast charging is also everywhere. Wireless charging has reached 20W, and now even thousands of yuan phones have begun to use fast charging technology. Under normal circumstances, the use of these once high-end technologies in thousand-yuan phones only means that their costs have been reduced, so these technologies can be popularized. And when the number of users increases, there will be another problem. The chargers that everyone used before were basically 5V1A specifications, not to mention Apple, which has used 1A chargers for several generations. However, in the era of fast charging, chargers with various parameters are available. Consumers will inevitably have questions at this time. Will the parameters be damaged if they are increased? After all, mobile phone batteries today are not replaceable, unlike before when they could be replaced casually. Here we will introduce several major directions of today's fast charging technology.
Nowadays, there are actually two main methods to increase charging speed, which are also the two major directions today:
1. Increase the voltage. Increasing the voltage requires higher quality of the charger. The charger will generate a lot of heat during charging, so if the charger does not meet the standards, it may be dangerous.
2. Increasing the current means lowering the voltage to increase the current, but high current also has disadvantages. For example, it will accelerate the aging of the 18500 battery and bring certain safety hazards, and high current will also cause irreversible loss of the chemical substances inside the lithium 18500 battery, but it also has advantages, that is, low heat generation. It depends on how the manufacturer balances the relationship between them.
However, fast charging technology requires all three conditions to be met, that is, the three indispensable links: charger, 18500 battery, and chargeIC. The fast charging technology that increases the current usually requires additional customization of the charging cable, because the current is large and there are no certain standard specifications that will cause harm to the human body.
At present, the fast charging technology of mobile phones is actually divided into the following three categories:
1. VOOC technology, the core of which is low voltage and high current.
2. Qualcomm QuickCharge technology, the core of which is high voltage and low current.
3. MediaTek PumpExpressPlus technology, which allows the charger to determine the voltage according to the current and can be adjusted dynamically.
So in the final analysis, will this mobile phone fast charging technology affect the life of the 18500 battery?
In fact, you can think about it, combining the two directions mentioned above, increasing the charging voltage or current to increase the charging speed. In fact, when the charging current becomes larger, the material on the surface of the negative electrode of the 18500 battery will break. This material is called a semi-permeable membrane. It will break slightly, but the result is that the internal material reacts, so it will cause irreversible loss. However, increasing the voltage will also increase the heat. Heat is also the biggest killer of lithium batteries, which will reduce the activity and capacity of the 18500 battery.
However, you don't have to be pessimistic about this, or stop using fast charging, or even use slow charging for your fast-charging mobile phone. Let's not talk about the life of the 18500 battery itself. In fact, many times when you use slow charging, it will also damage the 18500 battery. After all, it can't meet the charging standards of mobile phones, and the IC chip will naturally make different adjustments. So the 18500 battery is originally a consumable, and now the life of smartphones on the market is very long, and the life is generally at least 500 charging cycles. As long as we can pay attention to developing correct charging habits, it is completely fine to use it for about two years. After all, lithium batteries have existed for many years, and the technology accumulation is in place, and it will not break down quickly.
So no matter which technology is used, it will cause certain damage to the 18500 battery, so it is not easy to conclude which technology is good. It can only be said that everyone has different opinions, but these technologies will have a certain impact on mobile phone batteries. Compared with slow charging, you still have to decide for yourself. Anyway, the author can't stand slow charging anymore. What about you?
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