Some of the correct use of lithium ion batteries

In order to use this product better and more safely, please read the manual carefully.

Lithium battery operating environment:

Temperature in 0 ~ 40 ℃, relative humidity is not more than 75% of the clean, dry and ventilated environment, should avoid contact with corrosive substances, away from fire and heat source.

Notes for charging:

It is strictly prohibited to charge the product from the discharge terminal, and the corresponding special charger must be used for charging from the charging socket. When the charging indicator bar on the charger stops rolling, please remove the charging plug in time to avoid overcharging the battery.

Precautions for discharge:

The product has the function of over-current protection. When the using current of the electrical equipment exceeds the maximum output current of the product, the over-current protection circuit will act and make the electrical equipment look unable to work normally.

Precautions for daily use:

The output of the discharge terminal is not controlled by the switch on the panel. The output of the discharge terminal is closed only when the battery voltage is lower than 9.0v. Panel switch control on the screen and the USB socket output, when the switch and battery voltage is 9.1 V or less will display in a second on a second frequency blinking remind you should charge in time, when the battery voltage is 9.0 V or less screen out and USB socket closed output, the purpose is to protect lithium batteries from excessive discharge, this is the process of control panel on the microprocessor into dormancy, you need to manually close the switch, turn on the switch when the battery voltage is 9.1 V or higher to awaken the microprocessor, display screen to display the battery voltage value, USB is 5 V output. Although the product has output short circuit protection function, but in daily use should not frequently short circuit +, - power output.

Related to environmental protection:

The normal cycle charge and discharge times of lithium battery is about 500 ~ 800 times. The lithium battery at the end of its life should be recycled and disposed according to the local laws.

Proper use of lithium battery battery maintenance:

Battery is a kind of consumable goods, its life is certain (charge and discharge times is usually 300-500 times), so master the correct use method is the battery "prolong life" secret. Different types of batteries have different charging requirements. Nickel-metal hydride electricity is prone to heat and high temperature problems during charging. For example, the heat cannot be released in time, which can easily cause battery degradation or irreversible damage or even explosion. In general according to the specification requirements of the battery with the charger or original charger to charge batteries can meet the requirements, avoid long time continuous charging and use is not in conformity with the requirements of the charger to charge no protection function (especially the low-grade charger), so as not to cause damage or danger, it should be right to give qualified or original charger to charge, after reaching full time is removed. Usually the lithium battery has a relatively complete protection function (with a protective plate), other requirements for the battery without too much, but in order to prevent the protection plate as the overcharge protection function failure caused by security problems, also not recommended for long time of charging, the battery charge after taken out, the other charge must be used when the original or attached to the battery charger, and follow the instructions to operate and use, otherwise you may damage the battery or even dangerous. Lithium batteries have a much higher risk of overheating, exploding and catching fire than other types of batteries. In addition, when charging the battery or charger should not be attached to flammable and explosive items, such as: newspapers and magazines.

Before use, the battery should be checked to see if it meets the requirements of the load. The battery will be damaged or its service life will be shortened if the battery cannot meet the requirements of the load or the current is too high (over 1C).

Due to long-term storage will accelerate the battery self-discharge and passivation of active material, environment temperature and humidity is 10 ° C ~ 30 ℃ 65 + / - 20% is more appropriate, at the same time to reduce the long-term storage battery (like years) caused by self-discharge and passivation the negative effects of active material and the battery every three months to do a charge and discharge cycle, to restore its original performance.

1, the charging

In the use of lithium batteries should be noted that the battery placed for a period of time will enter the dormant state, at this time the capacity is lower than the normal value, the use time is also shortened. But lithium battery is easy to activate, as long as after 3-5 normal charge and discharge cycle can activate the battery, restore the normal capacity. Due to the characteristics of lithium battery itself, it has almost no memory effect. Therefore, the new lithium battery in the user's mobile phone does not need special methods and devices during the activation process. Not only in theory, but in my own practice, the "natural activation" of a standard charge from the start is the best. For the lithium battery "activation" problem, many people say: charging time must be more than 12 hours, repeated three times, in order to activate the battery. This "the first three charge to charge more than 12 hours", obviously from the nickel battery (such as nickel cadmium and nickel hydrogen) continued to say. So this kind of saying, can say to be misrepresented namely at the beginning. The charge and discharge characteristics of lithium battery and nickel battery are very different, and it can be very clear to tell you that all the serious and formal technical data I have looked up all emphasize that overcharge and over discharge will cause great harm to lithium battery, especially liquid lithium ion battery. Therefore, it is best to charge according to the standard time and standard method, especially do not charge more than 12 hours. Usually, the charging method described in the manual of the mobile phone is the standard charging method suitable for the mobile phone.

In addition, a phone or charger with a lithium battery will automatically stop charging when the battery is fully charged, and there is no so-called "trickle" of charging that lasts for more than 10 hours. In other words, if your lithium battery is fully charged, it will go blank on the charger. And none of us can guarantee that the battery charge-discharge protection circuit characteristics will never change and the quality of foolproof, so your battery will be in danger for a long time to wander around. This is another reason we oppose long - term charging. In addition, on some mobile phones, if the charger is not removed after charging for a certain period of time, the system will not only not stop charging, but also start the discharging - charging cycle. There may be a purpose to this, but it is clearly detrimental to battery and phone/charger life. At the same time, long charging takes a long time and often takes place at night. In China's power grid, the voltage at night is high and fluctuates greatly in many places. Having said that lithium batteries are delicate, they are much less resistant to fluctuations in charge and discharge than nickel ones, which poses additional risks. In addition, another aspect that cannot be ignored is that lithium battery is also not suitable for over discharge, over discharge on lithium battery is also very bad. This leads to the following question.

2. When should you start charging in normal use

On BBS, you can often see this saying, because the number of charge and discharge is limited, so the phone battery should be used up as much as possible to recharge. However, we found an experimental table about the charging and discharging cycles of lithium ion batteries. The data of cycle life are listed as follows:

Cycle life (10%DOD) : >1000

Cycle life (100%DOD) : >200

DOD stands for discharge depth. As can be seen from the table, charging times are related to discharge depth, and the cycle life of 10%DOD is much longer than that of 100%DOD. Of course, if equivalent to the actual charge of the relative total capacity: 10%*1000= 100,100 %*200=200, the latter full charge and discharge or better. Under normal circumstances, you should have reservation according to battery remaining quantity of electricity USES up the principle that charge afresh to charge, but if the battery is in the 2nd day that predicts to hold to whole daytime impossibly when, should begin to charge in time, if be willing to carry charger to the office of course, should become another argument again. Even if the battery has a lot of power left, you can charge it in advance. You don't really lose "1" charge cycle life, which is just "0. X" times. The principle of recharging after a battery has run out of juice is not to take you to extremes. As popular as long charging is, "try to use up your phone's battery, preferably by shutting it down automatically." This is actually done on nickel batteries to avoid memory effects, but unfortunately it's also used on lithium batteries. There have been cases of people who continue to use their phones without charging after warnings that their batteries are too low. Results in this example of mobile phone in the later charge and boot are no response, had to send customer service maintenance. This is actually caused by the low voltage of the battery due to excessive discharge, so that it does not have the normal conditions for charging and starting up.

3, the correct use of lithium cell phone important tips

To sum up, my most important tips for charging and discharging problems in use of lithium battery mobile phones are as follows:

1. Charge according to standard time and procedure, even the first three times;

2, when the phone power is too low, should try to timely start charging;

3. No special method is required for the activation of lithium battery, which will be activated naturally in normal use of mobile phones. If you insist on using the popular "first three 12-hour long charge and activate" method, it will not actually work. So all the pursuit of 12-hour long charging and automatic shut-down of lithium-ion cell phones is wrong. If you have done something wrong before, please correct it before it is too late. Of course, in the mobile phone and charger own protection and control circuit quality is good, the protection of lithium battery is quite guaranteed. Therefore, the understanding of charging rules is the key, and some concessions can be made in some cases. For example, if you find that your phone needs to be charged before you go to bed at night, you can start charging it before you go to bed. The point is to know what the right thing to do is and not to do it in the wrong way.

Ii. Battery maintenance

In fact, the battery is not too much to take into account the use of attention, in other words, is not too much to take into account the use of. How many times a battery can be used depends more on individual differences in how the battery is made than on how it is used. In addition to the quality of the battery itself, the battery itself is limited in service life. Once the battery is off the production line, its life begins to elapse. Lithium batteries last two to three years, whether you use them or not. One of the main reasons for the decline in battery capacity is the increase in internal resistance due to oxidation, and eventually the resistance of the electrolyzer reaches a point where the battery cannot release the stored charge even though the battery is fully charged. Many friends believe that the first use of lithium battery should be charged for more than 16 hours, so that the full activation of the battery, in fact, there is no basis for doing so, this is the popular nickel hydrogen or nickel cadmium battery charging method, for lithium ion battery is not applicable. Because the lithium-ion polymer at the core of the battery in theory no memory effect, if there is, is completely negligible. Therefore, it is perfectly ok to charge the battery for only about 3 hours. If it is shown that the charging has been completed, and external power supply is not needed for the time being, then the battery can be unplugged and there is no need to wait for such a long time.

Myth 1: the PSP needs to be charged and discharged three times in order to activate the battery. Unless you buy the PSP is the inventory of products more than one year, otherwise there is no need to do this, because now the batteries batteries have been activated in the factory, the batteries when encapsulated into a PSP batteries after an equivalent to activate test again, so you get its hands on the battery, already had been activated, only three times of charging and discharging process cost anymore to increase the wastage of the battery.

Myth 2: the first charge must last 12 hours. This is suitable for the nickel-metal hydride battery equipment without battery control circuit in the early days, but it is a joke for the PSP with intelligent charging and discharging control module nowadays. When the PSP battery is full, the charging current will be cut off automatically and displayed as "external power supply" in the system. Even if you keep charging for 120 hours, you won't see any change in your status. Generally speaking, 3 hours will be full, and the rest of the "charging" will be a waste of time. Instead, when you get a new machine, you should light it up before you charge it.

Myth 3: batteries need to be fully charged and discharged once a month. For nimh battery memory effect is very strong, this is must work, but for lithium-ion batteries, the cycle is too frequent, lithium battery, in theory, is to eliminate the memory effect, even if there were, also has been greatly weakened the negligible degree, if you use the battery is very frequent, then you should discharge the battery to the low (about 10 ~ 15%) recharging, but if the discharge to even open machine (0 ~ 1%), belong to the lithium battery has great damage depth of discharge, usually once every 2 months to do this operation. If you use batteries sparingly, you should only do this once every three months.

Myth 4: charging while working, or after charging will continue to use external power will damage the host and battery. This is the most ridiculous argument. How much of the theoretical argument about the mechanism of hole electron and secondary charge can be obtained in practice? First of all, the view of battery industry academia is not unified. The theory is still divided, how to guide the actual use of consumers? Battery consumption is divided into normal loss and damage loss, the power converter using and the degree of loss of charge while using the real cause, completely within the normal wear and tear, the battery that is to say, no matter how theoretical maintenance measures system, battery is aging, it's like how the magic of cosmetics and maintenance also can not stop the beauty become old woman, most are just slow, but on the surface of the plaster of utility can exactly how many truly, this is by no means theory can explain the actual use experience is correct - respect and understanding of the scientific concept. It may be said that the only way to avoid battery aging is not to use it (so many people choose to remove the battery), but this makes the portability of the PSP meaningless, and the battery will naturally age over time even under storage. Batteries are actually a semi-consumable commodity, and I think their sacrifice is valuable as long as they provide you with enough convenience and happiness.

The page contains the contents of the machine translation.