Battery life on the iPhone 5

[one_crazy_dude]

I'm getting good battery life from my phone.

I have been cycling the battery every day since launch day. I let the phone charge over night so it gets no use.

 

[Ltzguy]

What I ended up with yesterday

 

[fury]

I'm getting good battery life from my phone.

I have been cycling the battery every day since launch day. I let the phone charge over night so it gets no use.

Deep cycling the battery every time will wear out your battery faster. You should only do that when you first get it and then once every month. http://forums.everythingicafe.com/threads/battery-life-on-the-iphone-5.98890/page-7#post-976339

 

[ednygma]

This was my full day from yesterday. This was my last deep charge and now I am off to smaller charging throughout the day

 

[one_crazy_dude]

Deep cycling the battery every time will wear out your battery faster. You should only do that when you first get it and then once every month. http://forums.everythingicafe.com/threads/battery-life-on-the-iphone-5.98890/page-7#post-976339

Only if the battery is drained completely as in leaving the lights on on your car over night. The battery will drain all the way. This is why l-ion battery's are not in cars/ motorcycles. A l-ion will not take a charge again if it is ran till there was no charge left in the cell.

Lucky for us iPhone shuts down while there is still charge(that's why we can still see the dim lightning bolt on the screen) allowing us to keep the electrons moving and allow to charge.

Charge away my friends.

Here is a good read about batteries.

http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm

 

[fury]

Only if the battery is drained completely as in leaving the lights on on your car over night. The battery will drain all the way. This is why l-ion battery's are not in cars/ motorcycles. A l-ion will not take a charge again if it is ran till there was no charge left in the cell.

Lucky for us iPhone shuts down while there is still charge(that's why we can still see the dim lightning bolt on the screen) allowing us to keep the electrons moving and allow to charge.

Charge away my friends.

Here is a good read about batteries.

http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm

Actually, I'm talking about wearing out the battery's usable capacity faster with frequent deep discharges (100%-0%).

See page 3 of that article.

Lithium ion chemistry prefers partial discharge to deep discharge, so it's best to avoid taking the battery all the way down to zero.

Here are some more good reads

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life, other than to calibrate the fuel gauge on a smart battery once in a while.

http://powerelectronics.com/portable_power_management/battery_charger_ics/proper_care_extends-li-ion-battery-0425/index1.html

Using only 20% or 30% of the battery capacity before recharging will extend cycle life considerably.

In other words, the depth of each of complete charge cycle affects its useful lifespan. As I said in my earlier post, giving it 20% charge five times is better than giving it 0% to 100% once. Say for example 500 charge cycles is how long the manufacturer claims it will take before the battery capacity is noticeably reduced. If you go through 500 charge cycles in a year, always charging from 0% to 100%, your battery capacity will be lower than if you went through the year giving it a brief charge whenever you had the chance. It is difficult to say how much lower, because of so many variables (usage, temperature, chemistry, quality of components, etc).

I don't know if it's the difference between having to fix the phone after a year, or having a phone that lasts 4 years. But if it's convenient to hook it up to the charger at any given moment, there's very good reason to do so.

 

[Sharunda]

fury this is extremely useful info for me. Thanks for posting this and explaining it. I understand it better now.

With my iPhone 4 and 4S, I would always charge throughout the day and it was easy because I had an Apple Dock to set my iPhone in. With this new iPhone 5 and no Apple Dock available, it sucks and is not that convenient for me at my desk. I like my iPhone to stand on the desk while charging and so far there are no accessories to support this. I currently have it sitting sideways in my iZel holder while charging. It's the best I can do.

 

[one_crazy_dude]

Actually, I'm talking about wearing out the battery's usable capacity faster with frequent deep discharges (100%-0%).

See page 3 of that article.



Here are some more good reads

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries


http://powerelectronics.com/portable_power_management/battery_charger_ics/proper_care_extends-li-ion-battery-0425/index1.html


In other words, the depth of each of complete charge cycle affects its useful lifespan. As I said in my earlier post, giving it 20% charge five times is better than giving it 0% to 100% once. Say for example 500 charge cycles is how long the manufacturer claims it will take before the battery capacity is noticeably reduced. If you go through 500 charge cycles in a year, always charging from 0% to 100%, your battery capacity will be lower than if you went through the year giving it a brief charge whenever you had the chance. It is difficult to say how much lower, because of so many variables (usage, temperature, chemistry, quality of components, etc).

I don't know if it's the difference between having to fix the phone after a year, or having a phone that lasts 4 years. But if it's convenient to hook it up to the charger at any given moment, there's very good reason to do so.

I understand what your saying but Apple doesn't say the life span of there batteries.

What I do know is with my iPhone 4 I did the same cycle for about a week and a half and 2 1/2 years later still get about 8 to 10 hours usage a day.

I would rather cycle charge 5 to 10 times at first than once a month there after and get all day usage and not run the battery down all the way (getting to your point of not cycle charging every day but topping off at night while sleeping)than 2 1/2 years of running to chargers all day long.

Honestly how many cycle actually does it take to notice a difference in decline in usage? I just can't find any info from Apple about battery life.

In my opinion only because I have used this technic on other devices including my iPad 2 I got on launch day that I trust this method.

But like you said also, different variables, temperature where people live all make a difference on these batteries.

 

[VOLS34]

Got a genius appointment tomorrow. Battery is averaging 4.5-5 hrs of usage & 7.5-10 hrs of standby. Screen has also randomly went dim on me a few times.

 

[damstr]

I don't think the 5 will be able to compete with my S3 and its 4200mAh extended battery but it sounds like its really good compared to the 4S getting mine tomorrow! Straight up trade.

 

[jnic429]

 

[nealh]

Anybody else experience variation in battery drain?
It seems sometimes the same activities seem to drain the battery at different rates?

For example, I used maps to direct me to work over 45 min drive it drained 10 - 11%.

Another use of the maps with GPS direction it drained 5-7% in about 10-15 min.

I used the phone for nearly 2 days to get a full drain to do a complete charge. This was after 2 smaller charges(first charge and then from 70 to 100%).

I just seem to see a more sporadic drain rate. Sometimes faster than others with very similar usage. I have had the phone just for a few days.

Maybe I'm nuts?!

 

[Michael Baturin]

Anybody else experience variation in battery drain?
It seems sometimes the same activities seem to drain the battery at different rates?

For example, I used maps to direct me to work over 45 min drive it drained 10 - 11%.

Another use of the maps with GPS direction it drained 5-7% in about 10-15 min.

I used the phone for nearly 2 days to get a full drain to do a complete charge. This was after 2 smaller charges(first charge and then from 70 to 100%).

I just seem to see a more sporadic drain rate. Sometimes faster than others with very similar usage. I have had the phone just for a few days.

Maybe I'm nuts?!

Wow this is funny I was just thinking the same thing. I went from 65% to 5% in about 2 hours last night and this morning I've been using my phone for about an hour and I'm at 98%. I think it's a software issue if correctly displaying the percentage and not the battery itself.

 

[VOLS34]

I went to Apple store yesterday for battery issues & they did a dfu restore so we'll see. They said if it continues they'll replace it but had to do this first. I also set up as new which is a pain.

 

[raqball]

Here are my stats... I'm fine with it!

 

[nealh]

Wow this is funny I was just thinking the same thing. I went from 65% to 5% in about 2 hours last night and this morning I've been using my phone for about an hour and I'm at 98%. I think it's a software issue if correctly displaying the percentage and not the battery itself.

I have % and battery icon, they display the same "value". Are you suggesting using % is just not reading correct or the iOS6 software is not calibrated and reporting accurately?

I did a full discharge and recharge to see if this calibrates battery performance correctly.

 

[Michael Baturin]

Already (second iPhone 5) battery drains...

 

[Michael Baturin]

I have % and battery icon, they display the same "value". Are you suggesting using % is just not reading correct or the iOS6 software is not calibrated and reporting accurately?

I did a full discharge and recharge to see if this calibrates battery performance correctly.

No the image and % are fine with one another. What I'm suspecting is that the % and battery being shown are not what they really are. Battery may have 20% left in actuality but iPhone is showing me 60% hence making it look Like crazy fast battery drain

 

[btitus]

View attachment 25524

That's good.

 

[Hondamaker]

My battery life is really good. A tad bit better than my 4S was, and it was pretty good.