iPhone only gets charged 300 times before battery dies?

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Redfor

New Member
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Jul 31, 2007
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Fort Knox, KY area
#2
That was a Estimate.. I personally think its probably more around 500 as per standard lith-Ion Batterys.

If you Kill your battery within a year.... You need to be cramed into a Microwave with a bag of popcorn and a stick of butter...
 

adseguy

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Jul 1, 2007
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#3
Plus that means after 300 charges it only keeps 80% of it's charge. It's not like it doesn't work;)
 

Survivor61

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Jun 26, 2007
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#5
I have to charge mine every night. I take if off the charger at 8am and it goes back on at 6pm when its dead or close. So I guess that gives me a bit under a year on the original battery.
 

Dallas Phil

Member
Bronze
Jul 4, 2007
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#7
I have a dumb question. When I am at work I leave my iPhone in the charging cradle with the earpiece all day. Only have it out of the cradle at night or if I am away from the office. Does this effect the battery life in any way? Thanks.
 

Redfor

New Member
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Jul 31, 2007
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#8
doesn't matter what you do, People are just sue happy now days... Example... that woman should NOT have won millions of dollars from McDonalds for spilling coffee in her lap...
People just insist on blaming others for their own ignorance.
 

billybob

New Member
Jul 18, 2007
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#9
I have to charge mine every night. I take if off the charger at 8am and it goes back on at 6pm when its dead or close. So I guess that gives me a bit under a year on the original battery.

sounds like you could have a bad battery, unless you're watching movies and web surfing all day....
 
Jul 13, 2007
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0
1
#10
Total Drain

300 of total drains of battery life meaning you drain it to the end no green but usually that does not happen since you charge it every night.
 

kdarling

New Member
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Jun 20, 2007
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NJ, NC, CO
#11
it says that the battery dies after 300 charges, is that true?
No. What happened was that Apple posted this comment:

"A properly maintained iPhone battery is designed to retain up to 80% of its original capacity at 400 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs."

This is typical Li-Ion battery status after a year, assuming you keep it charged, use it in an average manner, and keep it around 75 degrees or less. (Note that they say UP TO 80%, because if you use it more, charge it less, and/or especially let it run hot, then it could easily be down to 60% or less capacity after a year.)

In any case, people misread it as saying that after 400 cycles it was dead and must be replaced. As you can see, it says nothing of the sort. But people were not happy that Apple waited until many were in line at the stores before posting any info at all.

Apple, btw, considers 50% capacity to be the point where they give you a new battery under warranty.
 

jbarrack

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Jul 2, 2007
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#12
I was told that 300 charges meant 300 "Full" charges. So if you use only 50 percent of you battery in a day, then charge it ... you only used half of the one charge ... so you have 299.5 charges left. Thats apparently what the dude at Apple told me. I hope thats the case ...
 

kdarling

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Jun 20, 2007
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#13
I was told that 300 charges meant 300 "Full" charges. So if you use only 50 percent of you battery in a day, then charge it ... you only used half of the one charge ... so you have 299.5 charges left. Thats apparently what the dude at Apple told me. I hope thats the case ...
While true, it's not terribly meaningful. Cycles are just a way of talking about its lifespan. Let's say the battery has a start-off life of 500 cycles.

Okay, but you live in a place where it's always hot, you put the phone in a case, the battery temperature is always well over 100F degrees, and you make a lot of calls and surf the web all day. You fully charge (cycle) the battery once a day.

After six months, you've only done 180 cycles, but the battery now only holds 65% charge and its life is down to 300 cycles, because of the usage and heat taking a toll.

So it's not a hard and fast number.
 

Tinman

Evangelist
Gold
Jul 16, 2007
4,334
183
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Aridzona
#14
While true, it's not terribly meaningful. Cycles are just a way of talking about its lifespan. Let's say the battery has a start-off life of 500 cycles.

Okay, but you live in a place where it's always hot, you put the phone in a case, the battery temperature is always well over 100F degrees, and you make a lot of calls and surf the web all day. You fully charge (cycle) the battery once a day.

After six months, you've only done 180 cycles, but the battery now only holds 65% charge and its life is down to 300 cycles, because of the usage and heat taking a toll.

So it's not a hard and fast number.
There is already a built-in variation in the stated 300-400 charging cycles.

If someone's battery reduced at the rate of your example it would be at less than 50% before the warranty was up--and Apple would have to replace it as being defective. Doesn't seem like a real-world example to me. I live in a VERY hot area and have not seen such a degradation in battery life for any lithium battery I have owned. My Treo's is more than two years old and holds a charge as good as new (at least 300 charge cycles in it). Moreover, it was with me on the bike many times in very extreme heat (more than half the year the temp is above 100 degrees--today it will hit 117).


--
Mike
 
Aug 28, 2007
348
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0
#15
No. What happened was that Apple posted this comment:

"A properly maintained iPhone battery is designed to retain up to 80% of its original capacity at 400 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs."

This is typical Li-Ion battery status after a year, assuming you keep it charged, use it in an average manner, and keep it around 75 degrees or less. (Note that they say UP TO 80%, because if you use it more, charge it less, and/or especially let it run hot, then it could easily be down to 60% or less capacity after a year.)

In any case, people misread it as saying that after 400 cycles it was dead and must be replaced. As you can see, it says nothing of the sort. But people were not happy that Apple waited until many were in line at the stores before posting any info at all.

Apple, btw, considers 50% capacity to be the point where they give you a new battery under warranty.
so you mean that if it doesn't charge past 50 percent i can get a new one under warranty?