What should I do if the laptop battery is 'aging'?

What should I do if the laptop battery is old? For many years of laptop users, at least, the battery will appear old after a period of time. The specific manifestation is the internal resistance, which is responsible for the faster rise of the voltage at both ends, and it will be easier to determine the charging control circuit now Full of ability also naturally downward. Due to the large internal resistance of the battery, the large fluctuation of the voltage drop, and the fast discharge speed, the system is easy to be mistaken for insufficient voltage and power (in fact, the battery cannot be discharged). It can be seen from the above description that battery aging is a vicious circle. If you find that the battery runtime drops quickly, you should exercise it, otherwise it will finish sooner or later. In addition, the failure caused by many lithium batteries is the battery of the failed battery pack. This phenomenon is not preventable, because the nature of each battery cannot be completely the same, and there will be some poor quality aging over a long period of time, destroying all ( Series) discharge curve. In short, a bad battery means charging for a period of time, first discharging and then discharging, while the capacity of other batteries is not fully utilized at this time. Overcharge/overdischarge of a single battery will not make the monitoring circuit think that the entire battery is full. For example, when the charging time, other batteries begin to approach the full charge voltage, the bad battery may now reach a voltage of 4.30v or even higher, resulting in overcharge damage, while other charging is not enough. Interested, courageous, and talented friends can try to open the battery pack. I believe that with the help of a multimeter, you can quickly find the damaged battery (voltage converter). If conditions permit, qualified products can be replaced according to the corresponding battery parameters. When charging the lithium battery, first use the constant current method to quickly charge, and then use the constant voltage method to slowly charge after the voltage reaches a certain value. Generally speaking, notebook computers do not have strict constant current charging monitoring devices. When the system load is large, the charging current is small; otherwise, it will be large. This current is determined by the power margin of the AC power adapter. Obviously, when the system is charging, the battery will compete for power with other components such as the CPU, hard disk, and LCD. I tried charging when Super was running, and found that the charging current is between 0.70-1.70a, which is not ideal for charging lithium batteries. Therefore, I am worried that charging will damage the battery during this operation. IBM pointed out that this may be a situation where the book requires not to operate the laptop while charging. When charging at power-on, if you can choose the charging method, do not select Expresscharge mode to avoid premature full charge. With lower battery time, it is forbidden to use the highest CPU function to reduce the power supply. If your laptop uses a CPU that supports SpeedStep, for convenience, it is best to install the top driver (any responsible manufacturer will install it). The SpeedStep icon is a small blue symbol that can be right-clicked to display utility options. Under WindowsXP, SpeedStep program may be a problem, it can only rely on modifying BIOS parameters or some specific brand adjustment programs, such as the tools and software of IBM notebook computers are very powerful. The discharge of lithium is always turned on, and it is better to let it discharge naturally. It is best not to use physical methods (string resistors, etc.). This is not the case. The danger is only relatively high. If the maintenance circuit inside is not used and the entire battery is abandoned, the worst may be an explosion of the battery. Of course, this possibility is very small. The risk caused by the circuit risk is not impossible. Some big brand manufacturers have discovered the potential risk elements in the design and recycled the battery. The problem of the explosion of the mobile phone battery also occurs in the ears. Fact: Generally speaking, the components in the laptop battery maintenance circuit are usually the voltage regulator block, the control chip, the number of safety and temperature probes. The thermostat is usually disposable, and there is a fuse inside (some fuse is a 130°C fuse) to monitor the operation of the regulator. If the charging and discharging process is abnormal, there will be current flowing through the temperature maintaining device immediately, which will blow the fuse. At this time, the internal circuit of the battery is broken and cannot be recovered. If you want to repair it, just replace the temperature holder, but this kind of temperature holder is hard to find in the market. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to maintain laptop battery