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Apple Computing Products:
macOS - Notebook Hardware
MB Pro 17" stops charging when using GPU
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<blockquote data-quote="trek2710" data-source="post: 1246589" data-attributes="member: 203437"><p>When this happens it turns off the power supply and this at a time where the power usage is high (that's why it is turned off) so the battery is down to perhaps 1-2 hours. Now the problem is that as soon it fx. goes down to 90% battery level it will start charging the battery when it thinks the power usage is low enough to both charge and run the Mb. </p><p>However, charging uses about 70W and having a 85W power supply makes only 15W available to run the Mb. This is about the amount the MB uses when it is idle (that is running with LCD open and HDD running but in essence no programs)</p><p></p><p>So when the game has been using more that 85W for just 5 minutes, the battery needs charging but this never happens as long as nearly anything is running.</p><p></p><p>If your 15" Mb pro is charging have you tried to do something heavy just for the CPU (no GPU).</p><p></p><p>Also - do you have access to a power meter and can tell me your power usage when</p><p>- charging</p><p>- GPU intensive</p><p>- CPU intensive</p><p></p><p>Thanks.</p><p>/Jeppe</p></blockquote><p></p>
[QUOTE="trek2710, post: 1246589, member: 203437"] When this happens it turns off the power supply and this at a time where the power usage is high (that's why it is turned off) so the battery is down to perhaps 1-2 hours. Now the problem is that as soon it fx. goes down to 90% battery level it will start charging the battery when it thinks the power usage is low enough to both charge and run the Mb. However, charging uses about 70W and having a 85W power supply makes only 15W available to run the Mb. This is about the amount the MB uses when it is idle (that is running with LCD open and HDD running but in essence no programs) So when the game has been using more that 85W for just 5 minutes, the battery needs charging but this never happens as long as nearly anything is running. If your 15" Mb pro is charging have you tried to do something heavy just for the CPU (no GPU). Also - do you have access to a power meter and can tell me your power usage when - charging - GPU intensive - CPU intensive Thanks. /Jeppe [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
MB Pro 17" stops charging when using GPU
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