Knowledge Point Analysis:
Failure Analysis and Solution:
1. Contact failure of battery and motherboard interface
A. Shut down, unplug the power and unplug the battery.
B. Plug in the power and boot.
C. Shut down and unplug the power.
D. Plug in the battery, plug in the power, this time should be able to see the battery display light. Indicates that it has been able to charge normally.
E. Power on, and then see if the display is normal.
2. Check the remaining battery power, if the remaining power is high, such as reached 95%, it is normal.
In order to prolong the battery life, the laptop sets the battery charge threshold and stops charging if it reaches this value. This battery power threshold can be set in the notebook's own source management software.
7.0 version of WIN7 system:
8.0 version of WIN8 system:
One way to check your laptop battery for electricity is to when the computer does not read and write operation (this time the hard work light is not bright, there will be no flicker) unplug the AC power supply plug, if the laptop continues to work properly, then everything is normal, otherwise, the notebook battery is really no electricity.
3. Some laptops have been set up to prohibit battery charging function
Third-party software in some laptops has the option of optimizing the battery charge, and the battery will be charged with an exception when the option is checked. However, this option only works after entering the operating system. In other words, when the notebook does not boot and plug in the AC adapter interface, can still charge.
4. Check if the AC adapter is original
Non-original AC adapter due to insufficient power, will lead to the battery can not be charged, the solution is to change the power, preferably the original AC adapter.
5. Some BIOS problems, with the battery connector part of the gold finger is abnormal, we suggest that you contact the nearest Lenovo service outlets.
6. If the above method is not sure of the problem, the battery itself is a problem.
Can be in the case of computer boot, unplug the AC adapter power supply interface, if the computer immediately shut down, it means the battery is dead. Maybe the problem is really out in the battery. If you can still use it, try to use it all the time. Then reboot the laptop to see if it can recharge.
