This is a question I want to ask. I find the answer here.

You can download an UI tool and install it on your Mac by using the following command if you have “Homebrew“ installed:

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brew cask install coconutbattery

This tool will give the production date info you need(both the Mac and the battery).

“brew cask” is an extension to brew that allows management of graphical applications through the Cask project. From here.