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Strange external monitor behavior
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<blockquote data-quote="MacInWin" data-source="post: 1912893" data-attributes="member: 396914"><p>My M1 MBP is plugged in pretty much 100% of the time. In System Preferences/Battery, I have selected "Optimized battery charging." The charging circuit is "smart" in that it will recognize that you don't use it on battery very often and will slowly let the charge decrease to about 80%. The charger light will change from green to orange to show that it's not fully charged. You can click on the battery icon and it will report that it is operating in this mode. Here is a screenshot from mine:</p><p></p><p>[ATTACH=full]36474[/ATTACH]</p><p></p><p>If I take it off the power and use the battery for a bit, it reverts to "normal" and charges back to 100%, but in a few days re-learns that it's rarely used on battery and lets it decline again.</p><p></p><p>So, why 80%? Well, lithium batteries like to be in the range of 60-80% for optimum life overall, so 80% is a good place to be, and it can charge back to 100% very quickly from there.</p><p></p><p>So, leave it plugged in all the time and let it learn. </p><p></p><p>Yes, it's a new behavior, but it works!</p><p></p><p>I also have my Battery settings in System Preferences set to keep the CPU ticking over and the drives active while the screen is dark from inactivity. The current used is minuscule, and the system wakes immediately with one press on the space bar, which is very nice.</p><p></p><p>Here are my settings:</p><p></p><p></p><p>[ATTACH=full]36475[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]36476[/ATTACH]</p><p></p><p>So, the advice you were given was correct. Keep it on mains power, let optimization do its thing and the monitor should work.</p></blockquote><p></p>
[QUOTE="MacInWin, post: 1912893, member: 396914"] My M1 MBP is plugged in pretty much 100% of the time. In System Preferences/Battery, I have selected "Optimized battery charging." The charging circuit is "smart" in that it will recognize that you don't use it on battery very often and will slowly let the charge decrease to about 80%. The charger light will change from green to orange to show that it's not fully charged. You can click on the battery icon and it will report that it is operating in this mode. Here is a screenshot from mine: [ATTACH type="full"]36474[/ATTACH] If I take it off the power and use the battery for a bit, it reverts to "normal" and charges back to 100%, but in a few days re-learns that it's rarely used on battery and lets it decline again. So, why 80%? Well, lithium batteries like to be in the range of 60-80% for optimum life overall, so 80% is a good place to be, and it can charge back to 100% very quickly from there. So, leave it plugged in all the time and let it learn. Yes, it's a new behavior, but it works! I also have my Battery settings in System Preferences set to keep the CPU ticking over and the drives active while the screen is dark from inactivity. The current used is minuscule, and the system wakes immediately with one press on the space bar, which is very nice. Here are my settings: [ATTACH type="full"]36475[/ATTACH] [ATTACH type="full"]36476[/ATTACH] So, the advice you were given was correct. Keep it on mains power, let optimization do its thing and the monitor should work. [/QUOTE]
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