Danger of long and deep charging of lithium battery

I don't know if you have the habit of charging your electronic products at night and unplugging the charger the next morning. In fact, this habit is wrong for two reasons: First, it is not conducive to the concept of environmental protection and energy conservation; Second, it is also a kind of damage to the battery itself. In order to make our living environment better, and also to worry about our need to replace the batteries of electronic products frequently, please take a moment to see why the batteries, especially lithium batteries, cannot be recharged for a long time. Long charging may lead to overcharge. The 18650 lithium battery, polymer lithium battery and lithium iron phosphate battery charger will automatically stop charging after the battery is fully charged, and there is no so-called "trickle" charging that lasts for more than 10 hours. That is to say, if your lithium battery is fully charged, it will also be white charged if you put it on the charger. However, none of us can guarantee that the characteristics of the charge and discharge protection circuit of the battery will never change and the quality will be guaranteed, so your battery will be at the edge of danger for a long time. This is another reason why we oppose long-term charging. On some machines, if the battery charger is not removed after charging for a certain time, the system will not only stop charging, but also start the discharge-charge cycle. Maybe the manufacturer of this method has its own purpose, but it is obviously detrimental to the battery life. At the same time, long-term charging takes a long time and often needs to be carried out at night. According to the situation of China's power grid, the voltage at night in many places is relatively high and fluctuates greatly. As we have said before, lithium batteries are very delicate. They are much less resistant to fluctuations in charge and discharge than nickel batteries, which brings additional risks. In fact, shallow and shallow charging is more beneficial for lithium batteries. Only when the power module of the product is calibrated for lithium batteries, deep and deep charging is necessary. Therefore, the products powered by lithium battery need not be rigidly bound by the process. All things should be convenient and charged at any time.

Paper batteries that can generate electricity only by bacteria

Use paper as battery? Generating electricity by bacteria? The human imagination is really unpredictable. Wait, this is not a fantasy, because someone has already made it. This kind of foldable paper battery is soft and environmentally friendly. It can generate electricity by itself relying on paper as a sensor. As a source of electricity, bacteria can generate enough energy through metabolism to generate electricity. Any raw material containing bacteria, such as sweat or dirty water, can be used as power generation material. The cost of origami battery is very low, only 5 cents. The folded battery is only the size of a match box. Although the paper battery is small in size, it is enough to provide the power required for a small LED lamp to work. As this technology.

How to choose batteries for two-wheel electric vehicles

With the development of two-wheel electric vehicles in the direction of light weight and long endurance, lithium batteries with lighter weight and higher energy density, along with the rise of application scenarios such as shared trams, take-out and express delivery, have a great trend to catch up with lead-acid batteries. So how to choose the battery for two-wheel electric vehicles, lead acid battery or lithium battery? Next, Brother Shibao will analyze and compare for you.

Different from electric vehicles, lithium battery charging should pay attention to relevant matters

The following are the relevant items to be noted when charging lithium batteries: 1. In order to prolong the life of lithium batteries, it is necessary to charge and discharge lithium batteries frequently. We should form the habit of charging after 80% of the power consumption of riding electric vehicles, and we should not wait for all the power to be used up before charging. In addition, lithium batteries should not be stored for a long time. 2. When charging the electric vehicle battery, the switch lock must be closed and the battery cannot be inverted. When charging, the battery should be fully charged at one time, and should not be charged multiple times, which will affect the service life of the battery. 3. Electrical appliances should not be stored in a state of power loss. Even when the battery is not in use, it should be fully charged once a month. 4. The lithium battery needs to use a matching charger when charging. Because the raw materials of the battery are different from the production process of the lithium battery, the technical requirements for the charger are also different. Therefore, only using a special charger to charge can make the lithium battery life longer and prevent potential safety hazards. 5. When the lithium battery is out of power, turn off the power supply and ride. Do not use the recovery voltage to prevent serious loss of power, so as to prolong the service life of the battery. 6. When charging the lithium battery of the electric vehicle, float charge for 1 to 2 hours when the charging indicator shows full charge. It is not necessary to stop charging immediately when the indicator shows full charge.