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Apple Mobile Products: iPhone, iPad, iPod
iPod Hardware and Accessories
Battery Test
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<blockquote data-quote="pendlewitch" data-source="post: 1364656" data-attributes="member: 214663"><p>Kaioshoryuken1;1364468]My battery ran for about 24 hours... </p><p></p><p>I also thought the more you plug the battery in, the worse it gets. My parents always told me that I should charge my iPod, cellphone, laptop, etc. every night, but I thought that wears out the battery quicker because that's one less charge cycle in the life of the battery. </p><p></p><p><strong><em>No, that's not the case with Lithium batteries. Assuming 'end of life' is when the battery capacity drops to an arbitrary threshold of 70% then you would expect to achieve 500 Discharge Cycles from 100% Depth of Discharge (DoD) in other words, charging from flat. </em></strong></p><p><strong><em></em></strong></p><p><strong><em>The figures get interesting when charging from 50% DoD....1500 cycles, 25% DoD...2500 cycles, 10% DoD...4700. N.B.In this instance 25% DoD = roughly 75% capacity on the fuel gauge.</em></strong></p><p><strong><em></em></strong></p><p><strong><em>Partial discharges reduce the stress on your battery. It is important to keep your device cool when charging also, sticking it in a case or sock under a bedside lamp next to a radiator whilst charging for example is not a good idea, any conditions that can cause the local temperature to hang around at 86degF or 30degC and above will compromise the battery life.</em></strong></p><p><strong><em></em></strong></p><p><strong><em>Just a moot point about charge cycles, charging from 100% DoD = 1 charge cycle, charging from 50% and then from 25%, and then again from 25% Depth of Discharge still adds up to 1 charge cycle.</em></strong></p><p><strong><em></em></strong></p><p>Also, usually I keep my backlight on the dimmest setting possible. I'd rather tilt my ipod to see the screen than increase the brightness. </p><p></p><p><strong><em>This is good for your battery.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></em></strong></p><p></p><p>I noticed you said browsing the library and switching songs eats power... does repeat/shuffle eat more power too?</p><p></p><p><strong><em>Yes it will...anything that makes your phone use it's internals in a pro-active way will have an effect.</em></strong></p><p></p><p>Also, about how much battery life does WiFi eat? I also didn't know that better bitrates take more battery life, which makes sense. I like very high quality music, so my files are generally pretty big.</p><p><strong><em>I believe that it does, I don't have any figures but downloading pictures, movies and streaming video would likely consume a good deal of energy. There is also a phenomenon of excessive battery drain when there are multiple w-fi devices in the same location constantly hunting for a connection before they get their turn to connect and download.</em></strong></p><p><strong><em></em></strong></p><p><strong><em>I like quality music too, however I accepted a compromise some time ago. I rip everything in ALAC (Apple Lossless) onto my Mac which I in turn pipe through my AV Amp/Receiver via an ATV2 which gives me a decent output, but I use the settings in iTunes to convert music synced with my iPhone to 128K to save battery and increase file storage capacity.</em></strong></p><p><strong><em></em></strong></p><p></p><p>I hope this helps.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="pendlewitch, post: 1364656, member: 214663"] Kaioshoryuken1;1364468]My battery ran for about 24 hours... I also thought the more you plug the battery in, the worse it gets. My parents always told me that I should charge my iPod, cellphone, laptop, etc. every night, but I thought that wears out the battery quicker because that's one less charge cycle in the life of the battery. [B][I]No, that's not the case with Lithium batteries. Assuming 'end of life' is when the battery capacity drops to an arbitrary threshold of 70% then you would expect to achieve 500 Discharge Cycles from 100% Depth of Discharge (DoD) in other words, charging from flat. The figures get interesting when charging from 50% DoD....1500 cycles, 25% DoD...2500 cycles, 10% DoD...4700. N.B.In this instance 25% DoD = roughly 75% capacity on the fuel gauge. Partial discharges reduce the stress on your battery. It is important to keep your device cool when charging also, sticking it in a case or sock under a bedside lamp next to a radiator whilst charging for example is not a good idea, any conditions that can cause the local temperature to hang around at 86degF or 30degC and above will compromise the battery life. Just a moot point about charge cycles, charging from 100% DoD = 1 charge cycle, charging from 50% and then from 25%, and then again from 25% Depth of Discharge still adds up to 1 charge cycle. [/I][/B] Also, usually I keep my backlight on the dimmest setting possible. I'd rather tilt my ipod to see the screen than increase the brightness. [B][I]This is good for your battery.:)[/I][/B] I noticed you said browsing the library and switching songs eats power... does repeat/shuffle eat more power too? [B][I]Yes it will...anything that makes your phone use it's internals in a pro-active way will have an effect.[/I][/B] Also, about how much battery life does WiFi eat? I also didn't know that better bitrates take more battery life, which makes sense. I like very high quality music, so my files are generally pretty big. [B][I]I believe that it does, I don't have any figures but downloading pictures, movies and streaming video would likely consume a good deal of energy. There is also a phenomenon of excessive battery drain when there are multiple w-fi devices in the same location constantly hunting for a connection before they get their turn to connect and download. I like quality music too, however I accepted a compromise some time ago. I rip everything in ALAC (Apple Lossless) onto my Mac which I in turn pipe through my AV Amp/Receiver via an ATV2 which gives me a decent output, but I use the settings in iTunes to convert music synced with my iPhone to 128K to save battery and increase file storage capacity. [/I][/B] I hope this helps.:) [/QUOTE]
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