To do that you need to disconnect the battery (and the charger) then press the power button holding it so the capacitor is allowed to discharge fully. It doesn't discharge the capacitor! So some settings aren't cleared. SMC reset sets a latch state so when the system is restarted the NVRAM is cleared. The latest models use an EEROM so the settings are not held by battery at all now, only the clock used the capacitor to hold its settings when the main battery was removed.
Systems which have a removable battery all had a coin battery/super cap, the systems which have a serviceable battery (need to remove the bottom cover, battery screwed down or glued) started with the clock chip and then used a regular capacitor. MacBook's & MacBook Pro's get a bit tricky! Apple started off with a (sometimes hidden) coin battery, they jumped to a clock chip (to hold some info) which had either a small battery or a super capacitor to hold its settings. Over the years this was called PRAM Parameter-RAM, newer models use the term NVRAM NonVolatile-RAM in either the coin battery is used to hold the settings. IMac's have so far used a small coin battery to hold settings as well as keep the clock logic running. As usual, Apple makes it clear "your computer will be examined prior to service to verify that it is eligible for the free battery replacement.- Sadly we tend to roll all systems in our minds used the same method, thats far from the truth. However, if it's already plaguing your device, contact Apple (Opens in a new window) and the battery will be replaced free of charge. If this issue hasn't happened to your 2016-17 MacBook Pro, Apple released a macOS update to prevent it from occurring.
MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports) MacBook Pro (13-inch, 2016, Four Thunderbolt 3 Ports) MacBook Pro (13-inch, 2017, Two Thunderbolt 3 Ports) MacBook Pro (13-inch, 2016, Two Thunderbolt 3 Ports) The battery health status on these devices will also indicate "Service Recommended." If the status indicates that your battery is Normal, your battery is not affected by this issue." On the support page (Opens in a new window) for the fault, Apple explains, "A very small number of customers with 20 MacBook Pro computers have experienced an issue with the battery not charging past 1%. How to Set Up Two-Factor AuthenticationĪpple is responding to reports of 20 MacBook Pro laptops not charging beyond 1% by offering to replace their batteries for free.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.
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