How long have you been using it? The probability of return is relatively low. It's almost impossible to return it. It should be guaranteed. It should be sent to the after-sales department to reinstall the system directly
Hello, after installing the power management software driver, you can conduct downward calibration inspection on the battery through the power management software, and you can view the image and text information through the Lenovo forum to operate. How to use the power management software to calibrate the battery accuracy:http://lenovobbs.lenovo.com.cn/forum.php?mod=viewthread&tid=3973?intcmp=FM_LBBS_baidureply2
