PowerTip of the Day-Check for a Battery

原文地址：http://app.en25.com/e/es.aspx?s=1403&e=5231&elq=4427f8ad0f9245da87fb793497c0753a

原文：

If your script needs to know whether your computer has a battery, you can ask WMI. Here is a small function:

function Has-Battery {
 
        @(Get-WmiObject Win32_Battery).Count -ne 0

        if (@(Get-WmiObject Win32_Battery).Count -ne 0) {

                 $true

        } else {

                 $false

        }
}

Note the use of @() which wraps the result into an array so you can check the number of batteries. Most systems have only one, but there are some systems with more.

 

 

翻译：

如果你的代码需要知道在你的机器上是否有电池，可以靠WMI。下面小函数可以实现这个方法：

function Has-Battery {
 
        @(Get-WmiObject Win32_Battery).Count -ne 0

        if (@(Get-WmiObject Win32_Battery).Count -ne 0) {

                 $true

        } else {

                 $false

        }
}

需要主意的是@()把结果放到一个序列中所以可以检索到多电池的情况。大多数系统都只有一个，但也有一部分系统有多个电池。

 

 

笔记：

复习WMI。

@()的说道。