How to check laptop battery drain

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Because I have to work and I have a lot of client information on my laptop that I don't have backed up, but I'm having battery problems

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Click “Computer” -> “Power Management” to enter the power management interface. In the interface, the top is the use of power, the bottom is the battery details, we can find the “Battery Properties” in the “degree of loss” this item, is the value we need.

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Ensure the appropriate use of the environment: Do not use the laptop battery in the sun or sub-zero temperatures to use, this will not only be the laptop's life time is greatly reduced, the more serious is that it will damage the life of the laptop battery.