What should I do if my laptop cannot detect the battery?

(1) After the battery is under-voltage, it enters the under-voltage protection state, and the field effect tube is not activated, causing the data transmission of the battery to fail without communication. At present, except for Toshiba batteries that have no communication protocol, other batteries have communication protocols. The communication is related to whether the battery information can be recognized by the computer. (2). The battery enters other protection states, and the battery enters the protection state caused by the flag position. In this case, the battery charging and discharging field effect transistors will be turned off, and the battery will be in a state of no output and input, causing the computer to fail to detect the battery. . (3) The ID identification pin between the meaning of the battery output terminal pin and the computer is open (usually due to oxidation or poor contact). Many users’ laptop batteries are definitely usable before, but the undetected battery is usually caused by these factors. (4) Regarding the laptop battery under voltage protection, if conditions permit, you can load a forward current within -100mA at both ends of the battery (at least you have to understand which end is the positive and negative poles). (5). Regarding the laptop battery without output and input status, then return to the factory for repair. The software flag position or hardware shutdown must be solved by professionals. Because of the high degree of difficulty, it is very troublesome to handle it by yourself. . (6) Regarding the oxidation or poor contact of the battery output terminal, you can use a small tool blade with a scraped surface to lightly polish the battery plug hardware and the computer contact piece, and the battery can be restored after finishing. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.