Comprehensive report 】 【 high lithium electricity people tend to have an error when charging, it‘s best to keep full charge state. Perhaps for obsessive-compulsive disorder when battery jumped from 100% to 99% will be the death of his, but in fact has been keep the phone in charging status is not a recommended behavior, especially in the equipment after full charge, also continue to recharge, mobile phone battery can really was not so.

Lithium battery is not universal

Many elders when you get the first mobile phone will always tell you that a new mobile phone to complete discharge, then recharge full 12 hours, and then completely discharge, the need to repeat 3 times. Original silly if you must, in accordance with the elder honestly do, in fact already used lithium batteries smartphone battery maintenance process of no longer need to bother.

The need for multiple discharge is ni-mh battery charging process, the battery has a strong memory, repeat the process of charging and discharging is in order for nickel metal hydride battery charge gain maximum limit. But now using cell phone lithium batteries, there is no need to repeat such a complex cell memory process. So, lithium batteries will always maintain the highest power limit?

The answer is no. Lithium battery is famous for its durability, but in the process of after many cell cycle inflation, will inevitably be the upper limit of power loss, the loss is to accumulate over a long period of formation, and form the cause of the loss in addition to the normal charging, overcharge is the culprit.

How to understand overcharge phenomenon

Overcharge actually is easy to understand, is the mobile phone in the case of display power is full continues for mobile phone battery charging, this time we will say phones are happened. Under the condition of the battery is full to continue charge will lead to the anode material structure change, thereby causing loss to the capacity, and the liberation of oxygen and electrolyte violent chemical reaction happens, the worst nature is the result of the explosion.

In the real life happen quite a few cases when charging mobile phone explosion. Such as xinhua reported on March 4, 2015, a 23-year-old girl playing mobile phone charging charred, shanxi evening news also reported in the June 15, 2015, a 18-year-old teenager play the phone charge due to electrocution. On the tragedy of the reason can be attributed to the battery itself is damaged, the charger no protection IC, power itself has quality problems, and so on. When after the completion of the charging current are input, because the battery electric capacity has reached the limit, at this time most of the current by the electrical energy into heat energy is consumed, and the cells began to heat up.

Common sense also tells us that the best way to save battery at room temperature and dry place, whether nimh batteries or lithium batteries just the same really. When overcharge occurs, there is no doubt that current transformation of heat energy will be a lot of, and thus lead to the reaction of lithium battery cathode electrolyte, consumes the largest electric capacity of lithium-ion batteries, when accumulated to a certain degree of heat, fire and explosion such events are likely.

In the face of such a low safety, natural mobile phone manufacturers and the charger manufacturers will not sit. After all, when a user security problems, they are all bad luck, so the charge their phone from time to tome a lot of good, especially in the prevailing with USB port to charge mobile phones and chargers are very exquisite.

Actually most of the mobile phone has now has IC protection exist. The charger itself also to monitor voltage and current. In order to protect the battery and the use of user security, on mobile devices often adopt the method of a trickle charge.

When using the USB port to charge if not to calculate loss of wire, USB charging port will negotiations with mobile phone recharge and match the suitable current, so it can ensure mobile phones won‘t because of the high current input leading to loss of most of the current. The battery is low, such as 10%.

At this time for the battery to charge the highest efficiency, current also reached the highest state. With the increase of electric capacity, the current mobile phone requirements will gradually decreases, and the arrival of the last remaining 10% ~ 20% even when full electric pulse small current to charge mobile phone will ask, so as to achieve the aim of protecting the battery, the charging ways, also known as trickle charging, is the mainstream mobile phone charging scheme, in order to reduce the wastage of the upper limit of capacitance, extend battery life.

In addition to providing a mobile phone battery overcharge protection, there is a kind of way is rely on charging socket for preventing overcharge. Socket to provide prevent overcharge must first to provide a stable voltage, the greater the fluctuations of the voltage, electric current will also be affected. Especially the night time, frequent fluctuations of the voltage can guarantee the stability of output voltage of the USB port is very important. In general USB charging voltage of 5 v of mouth, can some of the intelligent distribution of current USB charging port can be in when the battery is nearly full charge state slightly lower charging voltage, alleviate the pressure of the batteries in order to reduce the input current.

The methods for cell phone charge have good inhibitory effect, but in the end or because we don‘t have any pull in the case of mobile charging power supply, keep the cell phone constantly repeat the process of discharging and charging, lead to a drop in electric capacity limit.

The overcharge is not a small matter

For ordinary mobile phone users overcharge really is not a small matter, mobile phone battery life directly affect the time of you use the cell phone, if let mobile phone is wanton overcharge, believe in less than a year of time the battery is about to die.

If you can see the back of the battery has a slight bulge, which could be overcharge. Said to big, overcharge and even affected your safety directly, the inferior battery insurable shanzhai is allowed to be put a fireworks or something. Want to avoid overcharge, fundamentally still seems to be laid hands on him from the time control.