Laptop battery life is long, it is often full of charge or battery life is drastically reduced, and even the battery is damaged, the specific performance is that the internal resistance becomes larger, the voltage rises faster at the time of charging. This is easily judged to be full by the charge control circuit, and the capacity is naturally lowered. Since the internal resistance of the battery is relatively large, the voltage drop during discharge is large and the speed is fast, so the system is easy to mistakenly believe that the voltage is insufficient and the power is insufficient. When it is found that the battery working time is relatively short, corresponding measures should be taken. Recovering the battery's discharge time with the battery refresh program Brand laptops have a battery refresh program that allows us to repair the battery. For example: laptops, equipped with nickel-metal hydride (Ni-Mh) batteries, due to improper charging and discharging, resulting in shorter battery discharge time, only less than 5 minutes, if you carry a laptop to work outside, It seems very inconvenient, is there any way to restore the battery discharge time? For the above situation, we can use the battery refresh program introduced by the official website of the notebook to refresh the battery to restore the discharge time, the specific method is as follows. (1) Use AC power to power the laptop, first download the refresh program to the official website of the laptop. (2) Restart the computer, press F8 to enter the boot menu and select the secure DOS mode. (3) Enter the directory where the file just downloaded, execute the battery refresh program, read the warning message, insert the floppy disk as required, and press the Enter key to perform the self-extracting operation. (4) Use this floppy disk to boot the computer, and a message appears on the screen. (5) When prompted to unplug the AC power, the program will automatically discharge the Ni-Mh battery. After the discharge is completed, the system will automatically shut down. (6) Since the battery temperature is high at this time, it should not be turned on immediately. After the battery is cooled for a while, plug in the AC power. (7) Boot the computer with a floppy disk, this time the file will automatically run the refresh program and ask the user whether to proceed. (8) At this point, the refresh program starts to refresh the battery, and the process is very fast. When returning to the DOS prompt A:>, the refresh is completed. (9) Turn off the computer and charge the battery until the indicator turns green. (10) The above process is repeated 3 times to get the best results. In addition, many lithium battery failures are caused by failure of a certain battery cell in the battery pack, and this phenomenon cannot be avoided. Because the cell properties of each cell are not completely consistent, some of the poor quality begins to age after a long time, and the overall (after series) discharge curve is destroyed. Readers with the interest and ability can try to open the battery pack, and with the help of the multimeter, you can quickly find the damaged battery (voltage abnormality). If the conditions permit, replace the qualified product according to the corresponding parameters of the battery core. By the way, when there is AC power, the battery will not be used. The battery will only be activated when the AC power is disconnected. When the power is off, there is a battery to protect the computer. The battery life is a little shorter, but it can be ignored. When using it, do not plug or unplug the plug on the notebook frequently, and wear the interface continuously. Especially in the case of charging, the battery is damaged. It is recommended to pull it off after turning it off. If you are just using it at home, you can remove the battery and plug it in directly, which will extend battery life. This article comes from [System Home] www.xp85.com