The reason and repair method of battery not charging in Dell notebook Win7 system

　Cause Analysis:

1, Software problems

In general, many computer brands such as Dell, Lenovo, Sony, etc. will be equipped with power management software for their own notebooks, if a certain "battery protection mode" is enabled, the power management software detects that the user uses AC power will prohibit the battery charge and discharge, in order to prolong the battery life.

So, if you find your laptop is not charging, you can go into the relevant power management software, turn off battery protection mode or check out the no-charge option, if the hardware is not a problem, the battery will be able to recharge.

　2, the hardware itself has problems

Hardware failure of the battery itself, usually, we can use restart the computer, re-plug the battery to judge, if the battery is still not charging, may wish to install some hardware detection applications, to obtain approximate battery loss reference information. If the battery hardware failure is determined, do not open or try to repair, there is a certain risk, it is recommended to take maintenance.

Security Fix Method:

When the Dell laptop is booted into the BIOS, the "Start battery calibration" option is usually found in the power project, which is "Begin battery Repair", which is generally the first reminder that the user is connected to a power adapter for full charge Then the text prompts the user to disconnect the AC power, the Win7 system will continue to discharge the laptop until the power is completely exhausted, then the notebook will be automatically shut down, we can connect the power adapter to charge, but do not boot, when the charging indicator lights off, the entire process is completed.

Note: The battery repair process in the BIOS can take up to 5 hours, so be sure to do so when you don't need to use your laptop, and if that doesn't improve the battery status, you can only say that the battery is already broken, and that you may be able to repair or buy a new original battery.

For battery charging failure, Win7 's small compilation also organized a number of enthusiastic users to share the maintenance experience for everyone, for your reference only:

1, the battery has been aging is also possible. The general battery is used for about 3 years, basically all aging, even the lithium battery. Go to the repair shop and check it out.

2, generally need to wait for the battery to 20% or so, you need to charge, do not wait until 0 o'clock, too hurt the battery.

3, check the battery, see if the line has been loose, the connection is not strong problem.

4, if the line is normal, or not to go in, you can see if the battery charger circuit board is broken, for a try.

5, if the line is normal, the charger is good, it may be the inside of the computer circuit board failure.

Special attention is: Sometimes the power adapter problem, bad situation is relatively small, if there is a universal table, you can test the output voltage.