Is freezing really the "immortal elixir" of cell phone batteries

"Put the cell phone batteries close to the limit of use in the refrigerator, freeze for a certain time, and then take them out to continue to use, the battery use time is longer than before the freezing!" This is the shortcut for repairing the old cell phone batteries, which has been popular in Hangzhou recently.

This will work? After a lot of people heard that have this doubt.

Frozen cells extended

Mobile phone standby time

In order to verify this statement, the reporter to a SONY Ericsson T628 original battery as experiment object. The phone was bought in April 2005, batteries have been used for nearly two years.

Machine Lord Shao Xiansheng said, under the condition of normal use, the phone standby time maintain in 24 hours. If the phone number is more, the duration of the battery will be more short. If the average talk time of each call for 3 minutes, to answer or dial 10 times, power is in jeopardy.

Before the test, turn off your phone, after the battery is full of it. Since then, no answer and the phone call any phone, also do not send and receive messages. Without any interference, that mobile phone standby quietly, after nearly three days no electricity.

Then entered the stage of experiment, the whole body equipped with a good mobile phone battery in the fridge frozen, (according to popular belief, in order to prevent the battery be affected with damp be affected with damp, need to phone firmly wrapped with plastic wrap, first break, as far as possible when the parcel inside and a total of three layers, ensure the battery in the vacuum state. Outside the plastic wrap, then bread three layers of newspaper, cell phone battery completely sealed).After 48 hours, take out the battery, remove one by one parcel out six layers of paper film, batteries have no expansion and deformation caused by frozen surface.

After a cooling off period, put the battery into full of a mobile phone and boot. The same case, the third days would have automatic shutdown of the mobile phone, the screen only a less electricity. After a week, still remaining on the phone's screen grid electricity. The ninth day, mobile phone to prompt because of electricity shortage.

"Frozen therapy" performance before and after the test confirmed the point: for the first time after freezing can prolong the stay of mobile phone battery time.

Freezing is not mobile phone battery "undead elixir"

Freezing method is really "undead elixir" of mobile phone batteries?"Low temperature can change the inside of the cell phone battery electrolyte, promote cells react on the frozen."Zhejiang university department of physics, said professor of leaf in the open.

Foliaceous professor introduction, the use of mobile phone battery process is actually a charge and discharge process. During this period, the battery inside the negatively charged and positive charge/hit each other. The battery will be more and more not after use, because in normal room temperature, the inside of the electronic kinetic energy is larger, so the battery is in active state, relatively frequent leakage situation. And put battery in low temperature environment, The lithium battery On the surface of the microscopic structure of the membrane and the electrolyte lithium, as well as their interface will change significantly, cause battery internal temporary is not active, to reduce leakage current. So after recharging, cell phones for electricity will increase the time.

At present, mobile phone battery widespread use Lithium electricity Pool, in theory, a lithium-ion battery charge number about 6000 times. If you charge more, hot games make its internal molecules arranged microstructure gradually destroyed, storage charge efficiency will decrease gradually.

"Freezing process is easy to damage the internal structure of the original battery, a short period of time may increase the ability to take charge, but long-term use may not be effective."Leaf, says proof cell microstructure once destroyed, it is impossible to completely recover again, long-term use of this method will accelerate cell phone battery consumption.

The cell phone battery don't need to easy to repair

Mobile phone battery repair methods also have more than one version. There is an argument, for example, use the eraser to wipe the phone batteries and mobile phone contact with the metal contact surface, can make use of mobile phone batteries in better condition.

This way of repair is recognized by the personage inside course of study."In fact, whether the eraser or other material cleaning tools, as long as can remove rust metal joint material, help charging condition and lasting power."Mobile phone store said a phone maintenance technicians.

Maintenance center of Hangzhou unicom dong said, facing the need to repair the mobile phone batteries, most of the time will adopt the way of depth of discharge."Generally speaking, mobile phone battery time more and more short, full of electricity without using more and more, all because of battery memory effect."This means that the mobile phone in time and time again in the process of charging and discharging, inside the battery will be part of the cumulative release of electricity. As the growth of the use of time, can't exert efficiency of the proportion of electricity will be more and more big, this is called memory effect. From a battery, memory effect is smaller, the greater the effective power.

To depth discharge of mobile phones, is by running out of internal power, to achieve a deeper level of recharging, the need to adopt some unconventional methods .Mr. Dong for an example, with a specific device to connect phone with a low voltage small bulbs, inside the battery power will transfer to the small bulbs, until all light."Mobile phone through low voltage slowly run out of electricity. Under normal circumstances, if the phone after connect is lower than the rated voltage of 3.6 v, will automatically power off."After put the electric, recharging of mobile phone batteries can be used for a longer time.

The page contains the contents of the machine translation.