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What should I do if the computer battery runs out of 20%? My computer is Dell and the system is win7.
1, hardware handling: go to the maintenance station to change the battery! There must be something wrong with some batteries!

2, software processing: BatteryMon 2.0 notebook battery repair software can reduce the loss of some batteries and extend battery life for a period of time!

Usage: Decompress, when the notebook starts to charge, directly run and start. After a period of time, the end of charging will be displayed. Then turn it off, unplug the laptop, turn it on and run the program. At this time, the software shows discharge. After a certain period of time, the discharge ends until the computer automatically shuts down, then plug in the notebook power supply, start the program to display charging, shut down after the end, unplug the power supply, and the program displays discharge when the computer is turned on until it is turned off. Finally, * * * has been carried out for two rounds, generally 2-3 rounds as a course of treatment, so that the battery can basically return to the real state.