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China is the largest lead-acid batteries supplier . Lead-acid batteries have a history of more than 200 years and are a widely used power source. It has the advantages of easy material availability, low price, large discharge capacity and high reliability. At present, the market share is very high, and it cannot be completely replaced in the future for a long time.       The design life of lead-acid batteries is about 5 years, but in actual use, the capacity is gradually reduced in 6~12 months, and the actual service life is only about one year. After analyzing a large number of failed batteries, the failure conditions were as follows: vulcanization, water loss, unbalanced grouping, softening, short circuit, and open circuit. Among them, "vulcanization" (lead sulphate crystal) accounts for more than 90% of the failed battery, which causes the battery capacity to drop and becomes the main reason for the end of battery life.       The charging and disch...

As we all know, Apple accessories have always been known for their expensive and durable, so many people like to buy Apple accessories. But if you buy fake apple accessories, it is very uncomfortable. Today, Apple lightning cable manufacturers will tell you how to identify the true and false of the Apple data cable.   In fact, there have always been such doubts, the price of Apple accessories is suspicion of high, but second-hand bargains are really difficult to reassure people. Take the data line, many people think that as long as the data cable can be connected, but here you have to tell everyone. The inferior data lines can cause various problems, such as power failure, identification failure, and so on. So here's a detailed physical examination of the Apple data line, and attached a comparison with the original data line, so that everyone has an understanding of this so-called original second-hand line. Apple data line manufacturers teach you how to identify the true and...

  Is it possible to have a good profit in the mobile phone accessories store? In addition to the choice of location, the quality of the service, and the good source of goods, how to find a Source of goods if I open a mobile phone accessories store? 1. Research the market. There are many brands of mobile phones. The mobile phones of a certain brand have different selling and receiving degrees in different urban areas. Do not blindly collect the source of goods, and decide the source of procurement according to the local market demand. 2. Learning experience. Go to the local mature, good mobile phone accessories store. Ask them about their hot mobile phone accessories and the channels for purchasing goods. 3. Network search wholesale market. According to the actual situation of your location, search and view on the Internet, the nearest to yourself, whether there is a large  cell phone accessories wholesale  supplier  market. In the mobile ...

In the current hands of a smart device, there are more and more power adapters in the home. In the case of a laptop, sometimes the notebook is damaged or replaced, and the power adapter becomes useless. Some people choose to throw it away, and some people choose to use it with other devices of the same type, but in fact the same kind of power adapter is not necessarily universal.       The interface differs from the interface between most notebook power adapter brands, which means that other brands of power adapters cannot be plugged into your laptop for power. The difference in interface is relatively safe, because at least you will not plug the power adapter that does not match the current or voltage to power the laptop, causing damage to the computer hardware. The voltage of different brands of laptop power adapter voltage is not the same, for example: IBM is generally 16V, Dell is 20V, Hp is 18.5V, Sony is 19.5V and so on. It can be seen that even if the power ada...

In the last decade, smartphones should be one of the fastest growing industries. Whether it is system or configuration, camera capability or unlocking solution, there has been a big breakthrough. The most powerful one is the fast charge technology, which has changed from 20W fast charge to 50W fast charge, and even developed a 100W super fast charge. But I don’t know if you have found out that the mobile phone battery itself does not seem to change, or the lithium battery used to have a bit of increase in capacity. Why is this? Large capacity battery is thick and heavy I don’t know if you have taken the battery of the electric car? Don’t look at it’s small size, but there are also dozens of pounds, and many girls can’t get it. Therefore, many manufacturers’ high-end flagship machines are not necessarily matched with large-capacity batteries. The first is to increase the thickness of the mobile phone. Secondly, it will be too heavy to affect the feel. Large capacity battery...

1. How to purchase  mobile phone accessories wholesale : The products of the accessories need to match the hot models of the communication store and the mainstream models used by the surrounding customers; the mobile phone accessories should introduce high-quality suppliers to ensure the quality of the products and the supply of the products; Usually the profit of mobile phone accessories for high-end mobile phone products will be very high, such as iPhone8, then you need products that match the product positioning. 2, How to price mobile phone accessories: 5 US dollars in the S9 protective shell, people who use S8 will definitely not choose, even in Amazon to buy a protective shell of 3-5 dollars. (The price of the S9 case in the store should be between $6-15) The price is reasonable, the price can’t be too low, but it can’t be too high. It is 2-3 times more expensive than the e-commerce channel. It is an acceptable pricing range. If it is higher, it will affect the sales v...

USB 3.0 data cable features: High-quality oxygen-free copper pure copper core, high transmission speed, double-layer aluminum foil + inner membrane shield double-layer anti-interference, stable transmission, strong anti-interference ability, data cable twisted pair: minimize data cable signal interference USB 3.0 data cable  transmission specification, providing ultra-fast data transmission rate of up to 5Gbp/s, flexible PVC jacket: flexible, not easy to break, durable. USB 3.0 data cable VS USB 2.0 data cable 1. USB 3.0 data cable bandwidth is 10 times that of USB 2.0 data cable, can reach 5Gb/s (480MB/s), and synchronous transmission bandwidth can reach 384MB/s, which is the main difference between USB 3.0 data cable and USB 2.0 data cable. 2. Low power consumption (about 25% lower power consumption than USB 2.0 data cable at 20MB/s data transfer); 3. USB 3.0 data cable is more energy efficient than USB 2.0 data cable. For devices that are tem...