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Old Dec 18, 2012, 07:55 PM   #1
macrumors 603
Join Date: Mar 2011
Location: Australia, Perth
Battery question

In regards to the draining of the battery in the iPhone, why can the iPhone run on "reserved" power, (if the % is shown) you can eaily run it down to 1%, but you need to charge it at least 5% just to switch it on..

13" MBPR i5 256Gig SSD 8 Gig Ram, Apple TV 3rd Gen, iPhone 6 16Gig, iPad Air 2 128Gig, Mac Mini 1.4Ghz i5 500GB HD
"There are no stupid questions, just stupid people."
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Old Dec 18, 2012, 08:36 PM   #2
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Join Date: Jan 2012
Because you should never run a Lithium Ion battery down below 10% if you don't have to. You can actually damage it beyond repair if you run it all the way out to 0%. So on the iPhone when it's 1% it's actually around 5%-10% so that the battery won't kill itself. Do some research on Lithium Ion/Polymer batteries. Here, I'll even give you a link http://batteryuniversity.com/learn/a...ased_batteries

So the reason why you have to charge to 5% (as with most Lithium Ion batteries (laptops whatever)) is because of the danger of destroying the battery if it completely discharges.
BigMcGuire is offline   0 Reply With Quote

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