[[TitleIndustry]]

Misunderstanding of charging new phones

Date:Apr 23, 2020

Many friends believe that the first three times after the new phone is bought, it needs to be charged for more than 12 hours, so as to ensure the longest battery life. In fact, this concept is outdated. The so-called 12-hour rechargeable activated battery is for nickel-metal hydride batteries, and most of the smart phones currently on the market use lithium batteries. Lithium batteries do not need to be activated and have no memory function, so they can be recharged and used, and they are not as particular about nickel-metal hydride batteries.


If you want your smartphone to maintain the original battery life, you may wish to follow the following methods to charge:

1. The low power alarm can be used for the first three times of the new mobile phone.The original direct charge is used to fully charge the mobile phone when it is turned on, and then it can be charged for an additional hour.This is recommended in consideration of the error of charging control. hour.


2. Many people like to charge their mobile phones before going to bed. In fact, this will cause the charging time of the mobile phone to be too long, which will cause some damage to the mobile phone battery. In addition, in many areas, the nighttime voltage is higher and the fluctuation is greater, which has no positive effect on the maintenance of battery life.


3. At present, the general smart phones on the market can be charged, used and stopped at any time. Don't wait for the phone to turn off automatically when it's completely dead, so it will damage the battery. After the battery is fully charged, it can continue to charge for 15-30 minutes.


In fact, the current smartphones use lithium batteries, which are not as fragile as everyone thinks. When the mobile phone battery is full, it will automatically cut off the charging power to avoid overloading, so there is no need to worry about damage to the mobile phone battery. No need to wake up in the middle of the night to unplug the power supply, users can sleep in peace of mind!

Of course, it should be noted that the mobile phone charger used must be a regular charger, preferably an original charger. Some chargers with mismatched models or models are best not to be used to charge the phone at night to prevent the charger from being of poor quality, causing the charger to burn down and harm the phone.

Lu Jianguo, director of the Comprehensive Inspection Department of the National Household Appliances Quality Supervision and Inspection Center of the China Home Appliance Research Institute, told the "Life Times" reporter that different battery products require different methods to charge, and must be used in accordance with the product instructions. Early nickel-cadmium and nickel-metal hydride batteries required similar "activation". These batteries will have a "memory effect". Charging in an incompletely discharged state will easily overcharge the battery. If the battery is used for a long time, it will make the user feel that the battery is running out soon. However, most of the batteries used in mobile phones and laptops are lithium-ion batteries. Its initialization process is completed at the time of manufacture, so it does not need to be activated when it is used. The life of a general lithium-ion battery can reach hundreds of charge and discharge cycles. The charge and discharge cycle here refers to the process of using up the power and then recharging, rather than plugging in the charger and unplugging it. Lithium batteries have no memory effect and can be recharged at any time. In order to reduce the number of recharges, the batteries are intentionally used up and then fully recharged, which does not extend the battery life, but has a negative impact on the battery life. In addition, if the mobile phone is used for automatic shutdown, the internal voltage of the lithium battery will be too low due to excessive discharge, and it may appear that it cannot be turned on and charged. Therefore, lithium battery charging pays attention to "eat less and eat more meals", frequent shallow charge and discharge is more helpful to extend its life. Lithium batteries generally have a safety protection circuit and a variety of safety devices to ensure that the circuit of the battery is automatically cut off during excessive charging and discharging and short circuit; too high internal pressure of the battery will trigger the decompression of the exhaust device; too high battery temperature will trigger heat Fuse protection device, thereby stopping the electrochemical reaction of the battery. Therefore, unless there is a quality problem, the battery will not explode due to prolonged charging. However, if the power is not unplugged after being fully charged, the battery will remain fully charged. Although it will not explode, it will speed up the loss of battery capacity. In addition, there are rumors that answering the phone while charging the phone will cause an explosion. Lu Jianguo said that this statement is untenable. If there is such a danger, the product will set up a program that does not connect to the phone when charging. However, from a health point of view, the electric wire will limit the user's range of motion. When charging and answering a phone call, the user may be fixed in a place for a long time, causing excessive muscle tension, so it is recommended that you unplug the power and talk. Do not cover anything on the battery when charging, or put it on the bed to avoid fire.


Previous: Mobile power purchase tips

Next: What are the requirements for the popularity of solid-state batteries?