From the Apple menu, choose System Preferences… From the View menu choose Network. Select Wi-Fi from the list of network interfaces. If the padlock icon in the lower left is locked, click it. When prompted enter an admin name and password to unlock. Click the Advanced… button. Click the "+" icon below Preferred Networks list. In the dialog popped up add a network named NULL (or whatever) with none security. In the Preferred Networks list under the Wi-Fi tab, Click and drag the network named NULL to the top of the list. Click OK to save the settings. Click Apply, then close System Preferences Before this fix, my MacBook Pro 13" (late 2016) usually lost 10% battery every night, getting me crazy. I read the popular post by Mixolyd, but I don't think it a good idea to manually manipulate system preference files protected by SIP. I carefully checked my log, and found mDNSRespondor frequently waked my computer every a few minutes. Thus I assumed that Wake on Demand was somehow turned on when using battery (pretty much a bug). In this document on Apple Support I found a very interesting statement: The wireless network you use with Wake on Demand should be the first wireless network in your list of Preferred Networks. My fix is to forge a network to be on the top of the list instead of your home or office wifi so Wake on Demand will stop working. I tested this method last night, and my computer lost only 1% for 10+ hours. Edit: My problem was that the computer drained 10% for a whole night, approximately 10 hours, and running "pmset -g log" showed many events about mDNSRespondor every a few minutes. This fix might not work if you don't have the same problem with mine.