dimanche 31 mars 2013

Re: [apple-iphone] Re: Conserving Battery

 

Thanks, very informative.

Doris O

On Sun, Mar 31, 2013 at 3:34 PM, Bruce Carter <rbrucecarter@yahoo.com>wrote:

> > Does using your phone with the charger/AC conserve battery life as it is
> my understanding that it is the charge cycles that use up the battery?
>
> A lot of people have bad memories associated with the old NiCad batteries,
> which did have a memory effect. The battery chemistry in an iPhone is
> LiIon - which is a completely different technology with its own
> peculiarities.
>
> The main enemy of LiIon batteries is heat, get them too hot and it hurts
> their life. Unlike NiCad, which had a cell voltage of 1.2V, NiMH which
> also has a cell voltage of 1.2V, and alkaline with a cell voltage of 1.5V,
> the cell voltage of a LiIon battery is around 4V. Fully charged it can be
> 4.2V, fully discharged is about 2.5V. If you ever fully discharge a LiIon
> - it is destroyed. Fortunately, the iPhone and other devices that use this
> battery chemistry have sophisticated electronic controllers to prevent that
> from ever happening - they will tell you the battery is "dead" long before
> it discharges to that 2.5V level.
>
> You will NEVER see stand alone LiIon batteries for sale in the store, only
> battery packs with the electronics built in, and terminals that can't be
> easily shorted. A LiIon battery, if fully charged, can be very dangerous.
> If shorted, it can achieve temperatures similar to molten lava - meaning
> if your LiIon powered iPhone or any other device with that type of battery
> starts overheating, your safest recourse is to place it on a concrete
> surface and back away. That is a VERY rare occurrence, though, because
> most LiIon batteries have a fuse built in as a last resort safety keeping a
> short from happening. The very few incidents of meltdown have been the
> result of multiple failures of safety systems simultaneously -
> statistically very rare. The people that put the iPhone in the blender,
> however, were extremely foolish because that is probably one way to cause
> LiIon shorts and catastrophic melt down, not to mention the release of all
> kinds of toxic substances.

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[apple-iphone] Re: Conserving Battery

 

> Does using your phone with the charger/AC conserve battery life as it is my understanding that it is the charge cycles that use up the battery?

A lot of people have bad memories associated with the old NiCad batteries, which did have a memory effect. The battery chemistry in an iPhone is LiIon - which is a completely different technology with its own peculiarities.

The main enemy of LiIon batteries is heat, get them too hot and it hurts their life. Unlike NiCad, which had a cell voltage of 1.2V, NiMH which also has a cell voltage of 1.2V, and alkaline with a cell voltage of 1.5V, the cell voltage of a LiIon battery is around 4V. Fully charged it can be 4.2V, fully discharged is about 2.5V. If you ever fully discharge a LiIon - it is destroyed. Fortunately, the iPhone and other devices that use this battery chemistry have sophisticated electronic controllers to prevent that from ever happening - they will tell you the battery is "dead" long before it discharges to that 2.5V level.

You will NEVER see stand alone LiIon batteries for sale in the store, only battery packs with the electronics built in, and terminals that can't be easily shorted. A LiIon battery, if fully charged, can be very dangerous. If shorted, it can achieve temperatures similar to molten lava - meaning if your LiIon powered iPhone or any other device with that type of battery starts overheating, your safest recourse is to place it on a concrete surface and back away. That is a VERY rare occurrence, though, because most LiIon batteries have a fuse built in as a last resort safety keeping a short from happening. The very few incidents of meltdown have been the result of multiple failures of safety systems simultaneously - statistically very rare. The people that put the iPhone in the blender, however, were extremely foolish because that is probably one way to cause LiIon shorts and catastrophic melt down, not to mention the release of all kinds of toxic substances.

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samedi 30 mars 2013

Re: [apple-iphone] Conserving Battery

 

Thanks, seems I really have not much to worry about then.

Doris

On Mar 30, 2013, at 7:11 PM, Jim Saklad <jimdoc@icloud.com> wrote:

>> Does using your phone with the charger/AC conserve battery life as it is my understanding that it is the charge cycles that use up the battery?
>> Doris
>
> Yes.
> However:
>
> <http://www.apple.com/batteries/>
>> A charge cycle means using all of the battery's power, but that doesn't necessarily mean a single charge. For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle. Each time you complete a charge cycle, it diminishes battery capacity slightly, but you can put notebook, iPod, and iPhone batteries through many charge cycles before they will only hold 80% of original battery capacity.
>
> Elsewhere they state that an iPhone battery should retain 80% of its capacity after 1000 *cycles*.
>
> So if you run the battery flat, and recharge it completely, once every day, then after THREE full years, you will have lost only 20% of its capacity.
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Jim Saklad mailto:jimdoc@icloud.com
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

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Re: [apple-iphone] Conserving Battery

> Does using your phone with the charger/AC conserve battery life as it is my understanding that it is the charge cycles that use up the battery?
> Doris

Yes.
However:

<http://www.apple.com/batteries/>
> A charge cycle means using all of the battery's power, but that doesn't necessarily mean a single charge. For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle. Each time you complete a charge cycle, it diminishes battery capacity slightly, but you can put notebook, iPod, and iPhone batteries through many charge cycles before they will only hold 80% of original battery capacity.

Elsewhere they state that an iPhone battery should retain 80% of its capacity after 1000 *cycles*.

So if you run the battery flat, and recharge it completely, once every day, then after THREE full years, you will have lost only 20% of its capacity.

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Saklad mailto:jimdoc@icloud.com



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Publié par à Aucun commentaire:

Re: [apple-iphone] iPad battery monitor.

 

I would have no idea where to find that info, but you would be surprised what you can find online.

I also think you need something more than a digital volt meter to check, amps, but then electronics is not my strong suit.

You had me stumped for a second with DVM.

Brent

On Mar 30, 2013, at 4:00 PM, Robert Poland wrote:

On Mar 30, 2013, at 3:31 PM, "N.A. Nada" <whodo678@comcast.net> wrote:

> I know of no app that will tell you the mAH or capacity for iOS. The Apple Store is too far for you.
>
> Do you have some battery store near you, like BatteriesPlus? They have the equipment to take a reading, if you bring it in fully charged. That or possibly a electronics technician.

I have the equipment (DVM) but not the specs. Where would I find them?

A detailed view of the power connector would be handy, unless the battery has to be removed to test it.

> the other Brent
>
> On Mar 30, 2013, at 5:51 AM, Robert Poland wrote:
>
> And this is a way to tell the condition of the battery?
>
> On Mar 29, 2013, at 9:25 PM, Clark Martin <cmmac@sonic.net> wrote:
>
> > I have a LION battery pack that I use to power my phone when I know I'll be using the phone heavily (bike rides mostly). I got it on e-bay for $20. I bought it after a trip to London where I found myself using the phone a lot (a lot of map checking). If you can find a regular time in the middle of the usage time when you can plug it in, either wall, car or battery pack you can keep it charged enough to use it all day.
> >

Robert Poland - Fort Collins, CO

[Non-text portions of this message have been removed]

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[apple-iphone] Conserving Battery

 

Does using your phone with the charger/AC conserve battery life as it is my understanding that it is the charge cycles that use up the battery?

Doris

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Re: [apple-iphone] iPad battery monitor.

 


On Mar 30, 2013, at 3:31 PM, "N.A. Nada" <whodo678@comcast.net> wrote:

> I know of no app that will tell you the mAH or capacity for iOS. The Apple Store is too far for you.
>
> Do you have some battery store near you, like BatteriesPlus? They have the equipment to take a reading, if you bring it in fully charged. That or possibly a electronics technician.

I have the equipment (DVM) but not the specs. Where would I find them?

A detailed view of the power connector would be handy, unless the battery has to be removed to test it.

> the other Brent
>
> On Mar 30, 2013, at 5:51 AM, Robert Poland wrote:
>
> And this is a way to tell the condition of the battery?
>
> On Mar 29, 2013, at 9:25 PM, Clark Martin <cmmac@sonic.net> wrote:
>
> > I have a LION battery pack that I use to power my phone when I know I'll be using the phone heavily (bike rides mostly). I got it on e-bay for $20. I bought it after a trip to London where I found myself using the phone a lot (a lot of map checking). If you can find a regular time in the middle of the usage time when you can plug it in, either wall, car or battery pack you can keep it charged enough to use it all day.
> >

Robert Poland - Fort Collins, CO

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Re: [apple-iphone] iPad battery monitor.

 

I know of no app that will tell you the mAH or capacity for iOS. The Apple Store is too far for you.

Do you have some battery store near you, like BatteriesPlus? They have the equipment to take a reading, if you bring it in fully charged. That or possibly a electronics technician.

the other Brent

On Mar 30, 2013, at 5:51 AM, Robert Poland wrote:

And this is a way to tell the condition of the battery?

On Mar 29, 2013, at 9:25 PM, Clark Martin <cmmac@sonic.net> wrote:

> I have a LION battery pack that I use to power my phone when I know I'll be using the phone heavily (bike rides mostly). I got it on e-bay for $20. I bought it after a trip to London where I found myself using the phone a lot (a lot of map checking). If you can find a regular time in the middle of the usage time when you can plug it in, either wall, car or battery pack you can keep it charged enough to use it all day.
>

[Non-text portions of this message have been removed]

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Re: Re: [apple-iphone] iPad battery monitor.

 

And this is a way to tell the condition of the battery?

On Mar 29, 2013, at 9:25 PM, Clark Martin <cmmac@sonic.net> wrote:

> I have a LION battery pack that I use to power my phone when I know I'll be using the phone heavily (bike rides mostly). I got it on e-bay for $20. I bought it after a trip to London where I found myself using the phone a lot (a lot of map checking). If you can find a regular time in the middle of the usage time when you can plug it in, either wall, car or battery pack you can keep it charged enough to use it all day.
>

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vendredi 29 mars 2013

Re: [apple-iphone] Re: iPad battery monitor.

 

I have a LION battery pack that I use to power my phone when I know I'll be using the phone heavily (bike rides mostly). I got it on e-bay for $20. I bought it after a trip to London where I found myself using the phone a lot (a lot of map checking). If you can find a regular time in the middle of the usage time when you can plug it in, either wall, car or battery pack you can keep it charged enough to use it all day.

On Mar 29, 2013, at 10:26 AM, Claudia Satori wrote:

> I am following all of these suggestions on my iPhone4S. It is rare that I have any battery life after 8 PM, and it only comes off its charger at 9:30am. so what should I do? I want to wait for 5S for new phone. Do I just struggle and charge as I can in the car or at home? I have let it run down at least 1x a week.

I have a LION battery pack that I use to power my phone when I know I'll be using the phone heavily (bike rides mostly). I got it on e-bay for $20. I bought it after a trip to London where I found myself using the phone a lot (a lot of map checking). If you can find a regular time in the middle of the usage time when you can plug it in, either wall, car or battery pack you can keep it charged enough to use it all day.

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Re: [apple-iphone] iPad battery monitor.

 

> I am following all of these suggestions on my iPhone4S. It is rare that I have any battery life after 8 PM, and it only comes off its charger at 9:30am. so what should I do? I want to wait for 5S for new phone. Do I just struggle and charge as I can in the car or at home? I have let it run down at least 1x a week.
> Claudia

The display screen uses a large fraction of the iPhone's power. Dimming the brightness saves battery proportionally.

The iPhone has Wifi, cellular, and Bluetooth radio receivers and transmitters, and a GPS radio receiver, all of which suck down power while they are turned on. You can save power by turning off ones you aren't using.

Some Apps -- notably 3rd-party mapping/guidance ones -- suck down a lot of power to run the GPS radio all the time, and/or to download maps continually as you move around. Killing such Apps when you aren't using them (double-tap the Home button to open the "Rapid-switching tray", then tap-and-hold on the icon until they all jiggle, and tap the icon's X).

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Saklad mailto:jimdoc@icloud.com

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Re: [apple-iphone] iPhone Charge WAS: iPad battery monitor.

 

It all depends upon what you are using it for and what the cellular and WiFi signals are like where you work. If your phone is searching for signals all day then it will lose charge faster.

Take my word for it, I often work in buildings with metal roofs and sides, lots of tall warehouse racking or out in some farmer's field where there are no signal. When I buy a new phone, I buy an extra battery. In the case of iPhones, I also like the mophie battery case's like David suggested.

BTW, the OP's question was how to get specific readings on the batteries condition, not how to conserve battery charge.

Brent

On Mar 29, 2013, at 10:26 AM, Claudia Satori wrote:

I am following all of these suggestions on my iPhone4S. It is rare that I have any battery life after 8 PM, and it only comes off its charger at 9:30am. so what should I do? I want to wait for 5S for new phone. Do I just struggle and charge as I can in the car or at home? I have let it run down at least 1x a week.

Claudia

[Non-text portions of this message have been removed]

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[apple-iphone] Re: Duplicate iPhone Photos

 

Thanks, that worked! I figured it was something like that, I just didn't know where to look.

Barbara

--- In apple-iphone@yahoogroups.com, Ken Bandy <kbandy@...> wrote:
>
> It sounds as if you may have inadvertently turned on the option to keep a normal version of the photo in addition to the HDR version. Got to Settings>Photos and Camera. It's the last option on that page. Turn it "off" to prevent this action.
>
> Ken
>
> Sent from my iPhone
>
> On Mar 29, 2013, at 13:44, "missladybee" <beadedimages@...> wrote:
>
> > For some reason lately I have been getting duplication of every photo I take with my iPhone 4S version 6.1.3 camera. This does not happen on my iPad 3 version 6.1.3
> >
> > Is there a way to prevent this from
> >
>

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Re: [apple-iphone] Duplicate iPhone Photos

 

It sounds as if you may have inadvertently turned on the option to keep a normal version of the photo in addition to the HDR version. Got to Settings>Photos and Camera. It's the last option on that page. Turn it "off" to prevent this action.

Ken

Sent from my iPhone

On Mar 29, 2013, at 13:44, "missladybee" <beadedimages@earthlink.net> wrote:

> For some reason lately I have been getting duplication of every photo I take with my iPhone 4S version 6.1.3 camera. This does not happen on my iPad 3 version 6.1.3
>
> Is there a way to prevent this from
>

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Re: [apple-iphone] Re: iPad battery monitor.

 

I carry a charged Morphie in my iPad case:

http://m.bestbuy.com/m/e/product/detail.jsp?skuId=5011829&pid=1218595781256

Yes, it's frustrating.

--
david@luda.net

On Mar 29, 2013, at 1:26 PM, Claudia Satori <claudsat@roadrunner.com> wrote:

> I am following all of these suggestions on my iPhone4S. It is rare that I have any battery life after 8 PM, and it only comes off its charger at 9:30am. so what should I do? I want to wait for 5S for new phone. Do I just struggle and charge as I can in the car or at home? I have let it run down at least 1x a week.

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