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Laptop battery testing method

Jun 20, 2023 pm 05:22 PM
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Laptop battery testing method

How to check the battery of a laptop How to check the battery of a laptop

Press the win r key at the same time to bring up the running program, enter powercfg /batteryreport, and click OK.

The system will automatically generate batteryreport and save it in the user folder as an html document. Double-click to open it.

The following figure is an example. The design capacity is 42082mwh, and the full charge capacity is 40930mwh. The battery loss rate is about 2.73%.

Note: For new phones, since they will go through various quality tests before leaving the factory, the battery will have a certain period of use, so the battery detected by third-party software and system commands will be slightly worn out. Even the loss value detected by the system may fluctuate between positive and negative values ​​after the battery is fully discharged, so it is for reference only.

How to check the status of laptop battery

Method 1:

1. Download the detection software according to Master Lu from the Internet.

2. Click "Battery Status Information" on the left in the opened interface.

Method 2:

1. Download batterymon. Batterymon is a professional laptop battery testing software that can detect battery charging and discharging conditions in real time. Before testing, the power adapter needs to be unplugged.

2. Click the "start" button below Xu Bihe, you can see that the status bar changes from "stopped" to "running", and the number of samples below changes from "0" to "1", indicating that the software has Start testing the battery.

3. There is a coordinate on the right side of the interface. The vertical axis represents the current remaining battery power percentage, and the horizontal axis represents the battery usage time. As time goes by, a diagonal line will appear in the coordinate area. This diagonal line represents the charge and discharge of the battery. The flatter the line, the longer the usage time, and vice versa. In the battery information on the left, "total time" indicates the maximum time that the battery can be used when the battery is fully charged as tested by the software.

4. If you want to view other information about the battery, you can click "battery information" at the top of the software. Here you can see other information about the battery.

Extended information:

The laptop battery is the battery inside the laptop. Nowadays, the use of rechargeable batteries is one of the advantages of laptops over desktops. It can greatly facilitate the use of laptops in various applications. environment.

The earliest battery introduced was a nickel-cadmium battery, but this battery had a "memory effect" and had to be discharged before each charge. It was very inconvenient to use. It was soon replaced by nickel-metal hydride batteries. Not only did nimh not "Memory effect", and can increase power consumption by 10% per unit weight. Luopai

Composition

Laptop batteries are composed of shells and cells and are lithium-ion batteries. Generally speaking, the battery cell refers to the number of cells in the battery, and mah refers to the capacity of the laptop battery.

The standby time of a laptop battery is mainly determined by the mah value. Generally speaking, the more cells there are, the greater the mah value and the longer the standby time. The life of a laptop battery is mainly measured by the number of charges and discharges. Qualified products are generally 500-600 times. Therefore, the effective service life of a laptop battery is less than 2 years. Expired batteries will age and the standby time will drop sharply, which will affect the mobility of the laptop.

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