Laptop battery why all of a sudden no electricity, and understand these do not spend money wasted

Notebook battery why all of a sudden no electricity reasons: the battery life of more than 3 months, the use of time in 10 months, the battery standby time than the previous battery life to a lot of short, so the battery with a long battery life The worse.

Take HP laptop battery repair method as an example:

The first step, boot, press "F2" into the BIOS menu; enter the Power menu.

The second step, enter the Power menu, find the "Start Battery Calibration" option, "Battery Calibration", that is, "battery charge proof" selected it, carriage return.

The third step, the screen becomes blue, and there are English tips, the laptop power adapter plug in the charge. When the battery is full, the screen prompts you to disconnect the power adapter. After the notebook continues to discharge the battery until the battery runs out. After the battery runs off automatically, connect the power adapter to the battery, but do not turn on the power. After the charging is completed (the charging indicator goes off), the notebook battery calibration process is completed. This behavior takes about 4-5 hours! Requires the BIOS with this feature. Hp laptop battery repair for scene 2, refer to the following steps if the laptop BIOS can not find the laptop battery correction options.

1, enter the "power options". Select "power use program" as "always open", set "off the monitor", "close the hard disk" for the shortest time, set "system standby" to "never"

1. Cancel all alert options in the Alarms of Power Options

3, after setting, close all applications, turn off the WIFI, unplug the power adapter, battery powered. Do not do any extra operation until the battery runs off automatically shut down this behavior takes several hours. Discharge is complete, even the power adapter, the battery is full, complete a HP laptop battery calibration.

The first step to open: my computer -> control panel -> power options -> power use program to use the battery of the time parameters of all selected "never"

The second step will be the "alarm" of the project to get rid of the above set of the above settings, in accordance with the principle of full charge and discharge to the battery charge and discharge, continuous charge and discharge back and forth 3 times