12 hours, really? Analysis of the mistaken charge of lithium battery in mobile phone

After buying a new phone, many friends still choose to run out of new batteries as quickly as possible, and then charge for more than 12 hours (many friends are also willing to turn off the charge). However, more and more mobile phone users from different channels learned that such a charging method is not scientific, mobile phone manufacturers to guide the charging time is full can, and many businesses are propaganda to charge more than 12 hours, then, mobile phone lithium battery charging how to charge? How long? There has been such a blind spot, today for the detailed analysis of these issues. First of all, we still say that some of the principles of mobile phone batteries, the author is not a chemist in the field of chemistry, so also on the point of saying that we can all have a normal understanding. Currently used in the market two times the main battery has Ni-MH (MH) and Lithium Ion (Li-ion) two types, now mobile phone batteries are all lithium-ion batteries (hereinafter referred to as lithium batteries). For lithium batteries, we only need to remember two points: 1 lithium batteries do not need to activate, 2 lithium batteries have no memory effect. Now the phone is all using lithium battery lithium battery before the appearance of the manufacturers have been activated processing, and the pre-charging, which is the reason we bought a new machine to find that the battery has electricity. In fact, after the lithium battery production, the constant pressure charge, and then discharge after several times of charge and discharge cycle process, so that the electrode fully infiltrated electrolyte, lithium battery was fully activated. Therefore, we bought the new lithium battery is not a new battery, has been activated before the factory, we can normally use, do not need the first three times before the battery depletion again full (depth discharge). The author provides a test sheet on lithium-ion battery charging and discharging cycle, and the data on the cycle life of lithium battery are listed as follows: Cycle Life (10%dod): 1000 Cycles (100%dod): 200 times the DOD is the English abbreviation of the discharge depth, according to the formula, 10% The charge times of deep discharge are much higher than that of full depth discharge. This can explain why many netizens phone lithium battery has been deeply discharged after the power-on is invalid, this is because the battery due to excessive discharge caused by the voltage is too low, so that the normal charging and start-up conditions caused. Do not wait until the battery runs out and recharge the lithium battery also does not have memory effect, the battery memory effect refers to the battery reversible failure, that is, the battery can be restored after the failure of performance. The memory effect is that the battery automatically maintains this particular tendency after a long period of time following a specific work cycle. This first definition in NI-CD batteries, to the Ni-MH battery is no longer exist, lithium batteries are not subject to this constraint, many friends worry that the battery will not be used to charge can cause batteries forever full dissatisfaction, this is really nonsense. How to charge lithium battery normally? In front of the lithium battery charging several misunderstandings, then, how should the charge? The current lithium battery capacity generally in the 1300mAh up and down, while mobile phone chargers are generally in the 500mA charge rate, therefore, the normal cell phone lithium battery charge time is generally about 2-3 hours.Of course, this is just theoretical data, mobile phone manufacturers in the manual is generally recommended is full after (ie green light) to charge for half an hour to an hour, this is mainly due to the error of charging control considerations, so full of more than 12 hours is not necessary, in fact, will cause some irreparable damage. Lithium battery Flush 12 hours is nonsense on the other hand, the author is still very recommended to use the original charger to charge, because only the manufacturers themselves to the phone's circuit design and lithium battery performance most understand, the original design will also be from the user and the phone itself to build, In particular, the capacitance of the charger selection and circuit design than the Shanzhai products are many excellent, excellent overcharge protection is more humane. The original charger is more expensive, but like Scud, Belkin, Momax, product wins these brands of products in cost-effective more worthy of consideration, and I remind you to try not to use universal charging. The magnum filling of the cottage is often the pit dad summed up, I to lithium cell phone in the use of the charge and discharge problem the most important tips are: 1, in accordance with the manufacturers to guide the charging time and charging rules to recharge, even the first three times only so, do not pay attention to sales staff to charge 12 hours of flicker; 2, when the mobile phone battery is low, Should be as soon as possible to start charging, do not wait until the power off after the charge; 3, as far as possible to choose the original or large brand of the corresponding model of the charger, strongly do not recommend the use of cottage products or multi-purpose charging, so as not to cause irreparable consequences.