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Old Jul 8, 2007, 06:20 AM   #1
hh83917
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Smile How long does your battery last, from full charge until it depleted?

I kept a record on the first two full charges until depleted (iPhone automatically turned off) of my iPhone, both wifi/bluetooth off. This is battery life of regular usage, meaning I'm not playing with the browser like when I first get the phone. I make hours long calls to friends and check weather once in a while with edge and also listened to music for 30 mins or so. I also used edge to send pictures attached posts to my blog.

--------------------------
1st full charge til depleted:

Usage: 6 hrs 50 mins
Standby: 1 day 19 hrs

--------------------------
2nd full charge til depleted:

Usage: 7 hrs 08 mins
Standby: 1 day 15 hrs

--------------------------

Now my phone showed the 15% power warning just few minutes ago and the Usage meter is at:

Usage: 7hrs 10 mins
Satndby: 1day 0 hrs

I did use a bit wifi and bluetooth today. But the top two statistics are
with wifi and bluetooth off.


Post your normal usage battery life and let us compare and see how well the battery actually stands against everyday cellphone tasks.
So far the iPhone battery is lasting long enough for my everyday usage.
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Old Jul 8, 2007, 08:01 AM   #2
Julien
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Bad idea, deep cycling Lithium-ion batteries will shorten their life span. You should charge them every chance you get and try to NEVER run completely dead.
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Old Jul 8, 2007, 08:08 AM   #3
Gonzlobo
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My numbers are going to be useless (but probably typical of our average user since few allow their unit to discharge completely).

During a typical work day (say 11 hours) I start with the phone charged, make 10 or so short calls, listen to 2 hours of mp3s, visit 5 websites a day & check my stocks 10 times . I'd say my battery depletes to 70%.

When I get home, I'll wi-fi a 1/2 hour of websites, check my stocks, resync to get podcasts all the while charging the unit.

It's too bad my laptop turns off juice to the phone when it sleeps, but that's kinda expected (it's a thinkpad)
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Old Jul 8, 2007, 10:16 AM   #4
swdesignr
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About 9 hours

I've been getting around 9 hours before seeing the 20% or 10% warning. That's moderate to heavy web surfing, email, camera, address book and light iPod and cell usage. This doesn't include standby time -- usually I can go for a day and a half without charging.

Last edited by swdesignr; Jul 8, 2007 at 10:18 AM. Reason: clarification
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Old Jul 8, 2007, 11:53 AM   #5
TheBusDriver
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Took it off the charger yesterday at around 10:00 am with a full charge, watched some small videos, made a couple phone calls, txt people, listened to the iPod, surfed the web, emailed people, and wifi was on at about Midnight I put it back are the charger and it had about 75% charge left on it.
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Old Jul 8, 2007, 01:17 PM   #6
AirmanPika
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http://en.wikipedia.org/wiki/Lithium_ion_battery

This should help you understand things a little better. Its actually perfectly fine to let the battery die so as long as you recharge the battery immediately. The phone/battery are intelligent enough not to let the charge get TOO low but you don't want to store it at the low voltage.

Also it won't hurt to recharge the battery at any given %. There is no memory effect. A caveat to this though is recharging a battery too often can decrease its overall efficiency so its probably best to hold off till about 25%-50%. I think its mentioned though that this may not be as much as an issue in cell phone batteries as the voltages are much lower.
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Old Jul 8, 2007, 01:33 PM   #7
gr8tfly
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Almost entirely WiFi, including some YouTube video playback. BT on:

Time to shutdown:
06:25 Usage
16:39 Standby
00:35 Calls

Apple says "6 hrs Internet (WiFi)", so I'm right in the ballpark of the spec'd time. I have a less than optimal cell signal, which will increase it's power consumption.
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Old Jul 8, 2007, 02:14 PM   #8
hh83917
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Quote:
Originally Posted by Julien View Post
Bad idea, deep cycling Lithium-ion batteries will shorten their life span. You should charge them every chance you get and try to NEVER run completely dead.
It's the first 2 charges on my iPhone. On most of my electronics I usually let it fully charge and fully depleted on the first time to maximize battery life. After that I charge when I want to. Then I'll let it run down once a month or few months and fully charge up again.
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Old Jul 8, 2007, 02:17 PM   #9
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Quote:
Originally Posted by Julien View Post
Bad idea, deep cycling Lithium-ion batteries will shorten their life span. You should charge them every chance you get and try to NEVER run completely dead.
That's for lead-acid cells.
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Old Jul 8, 2007, 03:43 PM   #10
DiamondMac
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I take my iPhone off the charger around 9am and use it on/off until work ends around 5pm.

Sometimes it makes it through 5pm, other times it does not.

I would say I use email/internet/text/calls for 3-4-5 hours a day for buisness and browse the net for a short while each day.

I am going to bring a charger to work next week just in case. Quite disappointed to be honest BUT I love it anyway.
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Old Jul 8, 2007, 04:31 PM   #11
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Old Jul 8, 2007, 05:35 PM   #12
Julien
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Quote:
Originally Posted by gr8tfly View Post
That's for lead-acid cells.
While for a deferent reason it is true for lead/acid I'm referring to lithium-ion Here is a good article about how to best care for your batteries.
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