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Apple Computing Products:
macOS - Notebook Hardware
Can MacBook Pro overcharge?
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<blockquote data-quote="pigoo3" data-source="post: 1357709" data-attributes="member: 56379"><p>You're absolutely right.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />...but laptops/notebooks have become so popular & powerful...that they are desktop replacements for many people...and are only occasionally used for their portability features. </p><p></p><p>Also, the question isn't so much about being able to run a laptop off the battery 100% of the time...it's about can a MacBook Pro overcharge (thread title)...and should the laptop be unplugged when the battery reaches 100% charge.</p><p></p><p></p><p></p><p>I'm thinking you may not be using your laptop quite as much as some/many people. If you:</p><p></p><p>- use your laptop on battery power 100% of the time</p><p>- if you currently have 100 battery cycles in 18 months</p><p>- that you have a Mac laptop with the newer 1000 cycle battery</p><p>- and you get approx. 8 hours of runtime on a single charge (which may actually be a bit optimistic)</p><p></p><p>Then doing the math...this works out to be:</p><p></p><p>- 18 months = 547.5 days</p><p>- 100 battery cycles x 8 hours/cycle = 800 hours of total use</p><p></p><p>Thus 800 hours / 547.5 days = 1.46 hours of computer use/day. I can see this being a realistic number for a busy person (work, house, kids, wife, etc.). But I think that many of us on Mac-Forums are MUCH more heavy users of our computers.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>As far as the 15 year estimate (based on the usage patterns mentioned above & assuming linear degradation of the battery)...well...it does sound good in theory...but I think in real life there are slow chemical changes in the battery that would make getting 15 years of use out of a battery difficult. </p><p></p><p>But on the other hand...I have an Apple "Clamshell" iBook from 2000 (12 years old now)...and it's battery is still working (get about 1.5-2.0 hours on a full charge)<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />...but I have no idea if it is the original battery.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>- Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1357709, member: 56379"] You're absolutely right.:)...but laptops/notebooks have become so popular & powerful...that they are desktop replacements for many people...and are only occasionally used for their portability features. Also, the question isn't so much about being able to run a laptop off the battery 100% of the time...it's about can a MacBook Pro overcharge (thread title)...and should the laptop be unplugged when the battery reaches 100% charge. I'm thinking you may not be using your laptop quite as much as some/many people. If you: - use your laptop on battery power 100% of the time - if you currently have 100 battery cycles in 18 months - that you have a Mac laptop with the newer 1000 cycle battery - and you get approx. 8 hours of runtime on a single charge (which may actually be a bit optimistic) Then doing the math...this works out to be: - 18 months = 547.5 days - 100 battery cycles x 8 hours/cycle = 800 hours of total use Thus 800 hours / 547.5 days = 1.46 hours of computer use/day. I can see this being a realistic number for a busy person (work, house, kids, wife, etc.). But I think that many of us on Mac-Forums are MUCH more heavy users of our computers.;) As far as the 15 year estimate (based on the usage patterns mentioned above & assuming linear degradation of the battery)...well...it does sound good in theory...but I think in real life there are slow chemical changes in the battery that would make getting 15 years of use out of a battery difficult. But on the other hand...I have an Apple "Clamshell" iBook from 2000 (12 years old now)...and it's battery is still working (get about 1.5-2.0 hours on a full charge):)...but I have no idea if it is the original battery.;) - Nick [/QUOTE]
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Apple Computing Products:
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Can MacBook Pro overcharge?
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