Battery state
My xperia Z1 has 3000mAh battery. But,I can use my phone only for a while. This is why I use many apps? And also when I open mobile data, the phone become an iron. It is too hot. Is this because of user's falt or normal?
That's normal, heavy apps and games will drain the battery faster and will heat up the phone.
Similar Messages
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Hi everybody
I have a Acer Aspire 5820TG TimelineX which is a really good laptop. But I have a big problem. I can't read the state of the battery.
This is what I get from acpi -V,
Battery 0: Unknown, 0%, rate information unavailable
Battery 0: design capacity 4400 mAh, last full capacity 4400 mAh = 100%
Adapter 0: on-line
Thermal 0: ok, 40.0 degrees C
Thermal 0: trip point 0 switches to mode critical at temperature 105.0 degrees C
Thermal 0: trip point 1 switches to mode passive at temperature 98.0 degrees C
Cooling 0: LCD 0 of 9
Cooling 1: LCD 0 of 9
Cooling 2: Processor 0 of 10
Cooling 3: Processor 0 of 10
Cooling 4: Processor 0 of 10
Cooling 5: Processor 0 of 10
from /proc/acpi/battery/BAT1/state
present: yes
design capacity: 4400 mAh
last full capacity: 4400 mAh
battery technology: rechargeable
design voltage: 11100 mV
design capacity warning: 300 mAh
design capacity low: 132 mAh
cycle count: 0
capacity granularity 1: 32 mAh
capacity granularity 2: 32 mAh
model number: BAT1
serial number: 11
battery type: 11
OEM info: 11
As you can see, ACPI is well aware that the battery is present and its infomation
Some output from dmesg | grep ACPI if it helps
BIOS-e820: 00000000bb73b000 - 00000000bb7bf000 (ACPI NVS)
BIOS-e820: 00000000bb7e1000 - 00000000bb7ff000 (ACPI data)
modified: 00000000bb73b000 - 00000000bb7bf000 (ACPI NVS)
modified: 00000000bb7e1000 - 00000000bb7ff000 (ACPI data)
ACPI: RSDP 00000000000fe020 00024 (v02 ACRSYS)
ACPI: XSDT 00000000bb7fe120 0007C (v01 ACRSYS ACRPRDCT 00000001 01000013)
ACPI: FACP 00000000bb7fc000 000F4 (v04 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: DSDT 00000000bb7ed000 0BA9D (v02 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: FACS 00000000bb75f000 00040
ACPI: ASF! 00000000bb7fd000 000A5 (v32 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: HPET 00000000bb7fb000 00038 (v01 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: APIC 00000000bb7fa000 0008C (v02 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: MCFG 00000000bb7f9000 0003C (v01 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: SLIC 00000000bb7ec000 00176 (v01 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: BOOT 00000000bb7e9000 00028 (v01 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: ASPT 00000000bb7e5000 00034 (v04 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: WDAT 00000000bb7e4000 00224 (v01 ACRSYS ACRPRDCT 00000001 1025 01000013)
ACPI: SSDT 00000000bb7e3000 009F1 (v01 PmRef CpuPm 00003000 INTL 20051117)
ACPI: SSDT 00000000bb7e1000 01E0F (v01 AmdRef AmdTabl 00001000 INTL 20051117)
ACPI: Local APIC address 0xfee00000
ACPI: PM-Timer IO Port: 0x408
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
ACPI: LAPIC (acpi_id[0x04] lapic_id[0x05] enabled)
ACPI: LAPIC (acpi_id[0x05] lapic_id[0x00] disabled)
ACPI: LAPIC (acpi_id[0x06] lapic_id[0x00] disabled)
ACPI: LAPIC (acpi_id[0x07] lapic_id[0x00] disabled)
ACPI: LAPIC (acpi_id[0x08] lapic_id[0x00] disabled)
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Using ACPI (MADT) for SMP configuration information
ACPI: HPET id: 0x8086a201 base: 0xfed00000
#6 [0000012000 - 0000016000] ACPI WAKEUP
ACPI: Core revision 20100121
ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
ACPI: bus type pci registered
ACPI: EC: Look up EC in DSDT
ACPI: Executed 1 blocks of module-level executable AML code
ACPI: BIOS _OSI(Linux) query ignored
ACPI: SSDT 00000000bb691c18 003AE (v01 PmRef Cpu0Ist 00003000 INTL 20051117)
ACPI: SSDT 00000000bb68f018 00891 (v01 PmRef Cpu0Cst 00003001 INTL 20051117)
ACPI: SSDT 00000000bb690a98 00303 (v01 PmRef ApIst 00003000 INTL 20051117)
ACPI: SSDT 00000000bb68ed98 00119 (v01 PmRef ApCst 00003000 INTL 20051117)
ACPI: Interpreter enabled
ACPI: (supports S0 S3 S4 S5)
ACPI: Using IOAPIC for interrupt routing
ACPI: EC: GPE = 0x16, I/O: command/status = 0x66, data = 0x62
ACPI: No dock devices found.
PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
ACPI: PCI Root Bridge [PCI0] (0000:00)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P2._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP01._PRT]
ACPI: PCI Root Bridge [CPBG] (0000:7f)
ACPI: PCI Interrupt Link [LNKA] (IRQs 1 3 4 5 6 *7 10 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 1 3 4 *5 6 7 11 12 14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 1 3 4 5 6 7 10 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKD] (IRQs 1 3 4 5 6 7 11 12 14 15) *10
ACPI: PCI Interrupt Link [LNKE] (IRQs 1 3 4 5 6 7 10 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 1 3 4 5 6 *7 11 12 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 1 3 4 5 6 7 10 12 14 15) *11
ACPI: PCI Interrupt Link [LNKH] (IRQs 1 3 4 5 6 7 *11 12 14 15)
PCI: Using ACPI for IRQ routing
pnp: PnP ACPI init
ACPI: bus type pnp registered
pnp: PnP ACPI: found 11 devices
ACPI: ACPI bus type pnp unregistered
pcieport 0000:00:01.0: Requesting control of PCIe PME from ACPI BIOS
pcieport 0000:00:01.0: Failed to receive control of PCIe PME service: ACPI _OSC failed
pcieport 0000:00:1c.0: Requesting control of PCIe PME from ACPI BIOS
pcieport 0000:00:1c.0: Failed to receive control of PCIe PME service: ACPI _OSC failed
pcieport 0000:00:1c.5: Requesting control of PCIe PME from ACPI BIOS
pcieport 0000:00:1c.5: Failed to receive control of PCIe PME service: ACPI _OSC failed
ACPI: resource 0000:00:1f.3 [io 0x4000-0x401f] conflicts with ACPI region SMBI [io 0x4000-0x400f 64bit pref disabled]
ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
ACPI: Power Button [PWRB]
ACPI: Lid Switch [LID0]
ACPI: Sleep Button [SLPB]
ACPI: Power Button [PWRF]
ACPI: Thermal Zone [_TZ] (40 C)
ACPI: AC Adapter [ACAD] (on-line)
ACPI: Battery Slot [BAT1] (battery present)
ACPI: WMI: Mapper loaded
ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS
ACPI: Video Device [PEGP] (multi-head: yes rom: no post: no)
[Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
I'm using the latest kernel from [testing] (2.6.34-ARCH).docwario wrote:you should try to update the bios with the latest one from acer (actually 1.13),
battery state is now available
I updated BIOS to v1.15 - still no solution. I have, however, found out why I can't see if the battery is charged or not. Appearantly, Acer is not using the standard ACPI spec. Just look at this:
Intel ACPI Component Architecture
ASL Optimizing Compiler version 20100121 [Feb 6 2010]
Copyright (c) 2000 - 2010 Intel Corporation
Supports ACPI Specification Revision 4.0
dsdt.dsl 5231: Method (_Q0E, 0, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (_Q0E)
dsdt.dsl 6596: Name (_T_0, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_0)
dsdt.dsl 6600: Name (_T_1, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_1)
dsdt.dsl 6659: Name (_T_0, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_0)
dsdt.dsl 6663: Name (_T_1, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_1)
dsdt.dsl 6831: Name (_T_0, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_0)
dsdt.dsl 6835: Name (_T_1, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_1)
dsdt.dsl 6894: Name (_T_0, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_0)
dsdt.dsl 6898: Name (_T_1, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_1)
dsdt.dsl 7777: Name (_T_0, Zero)
Remark 5111 - ^ Use of compiler reserved name (_T_0)
dsdt.dsl 7870: Name (_T_0, Zero)
Remark 5111 - ^ Use of compiler reserved name (_T_0)
dsdt.dsl 7874: Name (_T_1, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_1)
dsdt.dsl 7941: Name (_T_2, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_2)
dsdt.dsl 8008: Method (OEMN, 0, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (OEMN)
dsdt.dsl 8105: Name (_T_0, Zero)
Remark 5111 - ^ Use of compiler reserved name (_T_0)
dsdt.dsl 9124: Name (_T_0, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_0)
dsdt.dsl 9152: Name (_T_1, Zero)
Remark 5111 - Use of compiler reserved name ^ (_T_1)
dsdt.dsl 9182: Name (_T_0, Zero)
Remark 5111 - ^ Use of compiler reserved name (_T_0)
dsdt.dsl 9248: Method (_WED, 1, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (_WED)
dsdt.dsl 9248: Method (_WED, 1, NotSerialized)
Warning 1081 - ^ Reserved method must return a value (_WED)
dsdt.dsl 9254: Return (OEMN ())
Warning 1093 - ^ Called method may not always return a value
dsdt.dsl 9399: Method (WMBH, 3, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (WMBH)
dsdt.dsl 9456: Method (WMBI, 3, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (WMBI)
dsdt.dsl 9518: Method (WMBJ, 3, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (WMBJ)
dsdt.dsl 9616: Name (_T_0, Zero)
Remark 5111 - ^ Use of compiler reserved name (_T_0)
dsdt.dsl 9661: Name (_T_0, Zero)
Remark 5111 - ^ Use of compiler reserved name (_T_0)
ASL Input: dsdt.dsl - 12143 lines, 396315 bytes, 5129 keywords
AML Output: dsdt.aml - 47766 bytes, 1103 named objects, 4026 executable opcodes
Compilation complete. 0 Errors, 8 Warnings, 18 Remarks, 6 Optimizations
So I properly need to make a correct DSDT table to solve my problem. However, I can't make heads or tails in the ACPI spec document, and most infomation about such a issue is highly outdated. -
2610 signal & battery state not visible
The display on my 2610 is difficult to see in bright light. I have set contrast to maximum and selected the basic theme to get black on white however the battery state and signal strength bars are still in light blue which is impossible to see in bright light. How do I change the colour of the bars to black?
go to display settings and you can select diff colours
If i have helped at all a click on the white star below would be nice thanks.
Now using the Lumia 1520 -
ok so I'm running arch linux on my laptop (Lenovo IdeaPad 510 G) and I've got a problem wit my battery, it doesn't update it's state to power managers (meaning that both xfce power manager and batti get an initial reading when I turn my laptop on but then they stop updating the battery state, so if I start my laptop with 100% battery that is what they will show for the whole session even if it drops to 1%), I've checked the wiki and tried using acpi, neither the battery nor the ac modules run but when I use acpi -i I do get my correct battery state.
I'm starting to run out of ideas here, has anyone faced this kind of problem before?This is due to a recent upower update. upower 0.99 uses a whole new set of api's which means that all the power managers need to be updated to work with it. I had the exact same issue on MATE but mate-power-manager got patched yesterday which fixed the issue. Until xfce4-power-manager is patched, you'll need to use an alternative battery applet that does work with the new upower (if there is one) or downgrade to an older version of upower. Here's the link if you want to downgrade: http://seblu.net/a/arm/2014/03/31/extra/os/x86_64/
EDIT: Don't bother downgrading upower. The issue has already been reported: https://bugs.archlinux.org/task/39893
and a new version of xfce4-power-manager which fixes the issue is in the testing repo: https://www.archlinux.org/packages/test … r-manager/
Last edited by Chazza (2014-04-26 15:05:45) -
Hi,
I have an X41, running XP. The battery status on this is weird. Here's what's happening:
The battery apparently has no charge - without the AC plugged in, the machine does not boot. When AC is removed when the machine is 'ON', it turns off. So far consistent with a dead battery.
Next, when I do turn the machine on with the battery in the slot, the machine boots. The Power Manager guage shows a constant charge of 42%. It neither increases, nor decreases. The baloon when the mouse points to this guage says:
(42%) remaining
Then, I fire up the Power Manager, and go to the 'Battery Information' tab.
Again, it shows:
Remaining Battery: 42%
Batteries installed: 1-main battery
Condition: Good (with a green battery)
The battery is in good condition.
At this point, I'm totally confused. I have checked the battery contacts, and the slot itself. All seem OK. I dont know what to believe. Do I have a dead battery? Or does it somehow have a disconnect internally?
Thanks for looking, and thanks in advance for responses.
lsiravii reinstalled lenovo's battery utility and opened it up to battery. i ran the reset which is supposed to charge to 100 then discharge to 0 then charge to 100. well it discharged just fine but wouldn't charge from 0. so i put the battery in an x40 and charged it to 93. i have the utility set to charge at 96. it said it was charging but the percentage remained the same. i then put the battery back in the x40 and charged it to 100. put it back in the x41 and ran the utility until it discharged to 90. then i turned off the utility and turned it back on and it said it was charging but it wasn't. i then called the co. that i got it from and me an tech support determined that the charging system on the board was bad. there are no resets, no fuses to change the only thing i can do is change the motherboard so we agreed to exchange it for an x40 which they had. i guess i'll go back to the old tried and true x40. the funny thing about this whole thing is the green light indicator showed a battery, the utility showed a battery, it showed the voltage of the battery, the voltage of the charging system, the only thing that didn't show on the utility was the time it was to take to charge it up to 100.
T430u, x301, x200T, x61T, x61, x32, x41T, x40, U160, ThinkPad Tablet 1838-22R, Z500 touch, Yoga Tab 2 Windows 8.1, Yoga Tablet 3 Pro
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Satellite L450 - battery states '18% available plugged in, not charging'
Laptop is a L450-181 and is literally two years and two weeks old!!! gutted... help!!!
no, still doesn't work... i'm wondering that the problem is the battery, maybe the cells inside are corrupt or something...
...have others shared the same problem? - 'plugged in, not charging'
what is annoying, is that since i lost my job, i didn't want to fork out a meagre 10 per month on extending the warranty... so it ran out just over two weeks ago... i'm worried if this would corrupt the computer when the battery runs down to 0% available... at the moment it is 13% and falling!
thanks for responding feliks! I hope you got the answers compadre! -
Basic Battery State Info - iPhone
Ive been looking (unsuccessfully) for basic power info exposed by the API. Not looking for anything like advanced power management (ala full blown IOKit) just simple readonly values for approx percentage battery remaining and if device is plugged in (on AC/DC) or not.
Any ideas?
In the event that such a thing does not exist (in actuality or via "published" APIs) and Apple Dev is monitoring this forum - Please, please, please give us basic power info.
We're wanting to be "good citizens" regarding power usage. Being able to selectivly scale back usage and use alt methods at different power levels is very important to deliver on that.
Something like (BOOL)[UIDevice currentDevice].isPluggedIn and (Float32)[UIDevice currentDevice].powerRemaining would open up a lot of doors for conditional power friendly apps.have u posted this interesting feature request to bug reporter ?
it is probably the best place to do it -
OfficeJet 150 All-in-one battery state ambiguous
The batter charge indicator on the control panel screen ALWAYS shows "0" and the graphic shows a solid black-filled battery case icon when the unit is on battery power.However, what's odd is that he battery seems to take some charge and the printer can later function seemingly normally on battery power for some time, but the battery indicator still reads "0" when selected.Is there supposed to be a "now-charging" light. I see an illuminated orange lightning-bolt led when the unit is on line power.Any firmware updates? Anything to do or try before going to HP tech support or dealing with the agony of warranty stuff ? The photo below was taken at about 5 minutes into a battery powered run that's still lighted up after 20 more minutes ideling on battery power. Thanks
Hello jjctso,
Welcome to the HP Forums.
I see that that printer is stuck on the Configuration page and it will not move on.
I suggest that you cut all power to the printer and let it sit for at least 1 min and then reconnect the power. This will do a semi reset on the unit.
Here is a document that will give you instructions for Resetting the All-in-One.
If the troubleshooting does not help resolve your issue, I would then suggest calling HP's Technical Support to see about further options for you. If you are calling within North America, the number is 1-800-474-6836 and for all other regions, click here: click here.
Thanks for your time.
Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
W a t e r b o y 71
I work on behalf of HP -
Hey guys,
I have a new iphone 4, i fully charged it and then recorded its depletion time.
My battery stats are:
standby-1 day
usage- 9 hrs 10 min
and now the battery percentage reads 5%.
are this statastics ok for a new iphone?Glad that a Restore as New resolved your issue...
Backup and Set Up as New Device
http://support.apple.com/kb/HT4137 -
Hp Envy states second battery not present
My second battery states not present. Please help me to solve this issue. I love this compuuter. And my warranty have already expired.
@razalijamsuri ,
Welcome to the HP support forums and thank you for posting. So that I can better help you with your battery issue, I will need a little more information. Here are some links to check out first.
Advice for asking the "Very Best Question"
Could you post back with your full model and product number.
How Do I Find My Model Number or Product Number?
As well when you state a second battery. Is it an hp original part or is it a third party battery.
Any information would be great. Please include your notebooks Operating System as well.
Which Windows operating system am I running?
I hope to hear back from you soon. Have a great day and thank you again for posting.
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
D5GR
I work on behalf of HP -
5s battery & heating issue (ios 8.1.3)!!!!!!!
i just bought 5s and updated it to ios 8.1.3, my maximum battery life is 4 and half hours of continues usage (just downloading apps and browsing and chat and no games), is that normal??
Hi Bebars100,
The resource below will provide information and tips to maximize the battery performance of your iPhone. If you follow these suggestions and still have issues with your new iPhone, it may require service.
Apple - Batteries - Maximizing Performance
https://www.apple.com/batteries/maximizing-performance/
“Battery life” is the amount of time your device runs before it needs to be recharged. “Battery lifespan” is the amount of time your battery lasts until it needs to be replaced. Maximize both and you’ll get the most out of your Apple devices
Your device is designed to perform well in a wide range of temperatures, with 62° to
72° F (16° to 22° C) as the ideal comfort zone. It’s especially important to avoid exposing your device to temperatures higher than 95° F (35° C), which can permanently damage battery capacity. That is, your battery won’t power your device as long on a given charge. Charging the device in high temperatures can damage it further. Even storing a battery in a hot environment can damage it irreversibly. When using your device in a very cold environment, you may notice a decrease in battery life, but this condition is temporary. Once the battery’s temperature returns to its normal operating range, its performance will return to normal as well.
iPhone, iPad, and iPod work best at 32° to 95° F (0° to 35° C). Storage temperature: -4° to 113° F (-20° to 45° C).
MacBook works best at 50° to 95° F (10° to 35° C). Storage temperature: -4° to 113° F (-20° to 45° C).
Charging your device when it’s inside certain styles of cases may generate excess heat, which can affect battery capacity. If you notice that your device gets hot when you charge it, take it out of its case first.
If you want to store your device long term, two key factors will affect the overall health of your battery: the environmental temperature and the percentage of charge on the battery when it’s powered down for storage. Therefore, we recommend the following:
Do not fully charge or fully discharge your device’s battery — charge it to around 50%. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge. Conversely, if you store it fully charged for an extended period of time, the battery may lose some capacity, leading to shorter battery life.
Power down the device to avoid additional battery use.
Place your device in a cool, moisture-free environment that’s less than 90° F (32° C).
If you plan to store your device for longer than six months, charge it to 50% every six months.
Depending on how long you store your device, it may be in a low-battery state when you remove it from long-term storage. After it’s removed from storage, it may require 20 minutes of charging with the original adapter before you can use it.
There are two simple ways you can preserve battery life — no matter how you use your device: adjust your screen brightness and use Wi-Fi.
Dim the screen or turn on Auto-Brightness to extend battery life.
To dim, swipe up from the bottom of any screen to open Control Center and drag the Brightness slider to the left.
Auto-Brightness adjusts your screen to lighting conditions automatically. To activate it, go to Settings > Display & Brightness and set Auto-Brightness to On.
When you use your device to access data, a Wi-Fi connection uses less power than a cellular network — so keep Wi-Fi on at all times. There are two ways to turn on Wi-Fi:
Swipe up to open Control Center, tap the Wi-Fi icon, and log in to a Wi-Fi network.
Go to Settings > Wi-Fi to access a Wi-Fi network.
iOS 8 is designed to be the most battery-efficient iOS ever. And it gives you more precise ways to manage your device’s battery life, because you can see the proportion of your battery used by each app (unless the device is charging). To view your usage, go to Settings > General > Usage > Battery Usage.
Here are the messages you may see listed below the apps you’ve been using:
Background Activity. This indicates that the battery was used by the app while it was in the background — that is, while you were using another app
To improve battery life, you can turn off the feature that allows apps to refresh in the background. Go to Settings > General > Background App Refresh and set the switch to Off.
If the Mail app lists Background Activity, you can choose to fetch data manually or increase the fetch interval. Go to Settings > Mail, Contacts, Calendars > Fetch New Data.
Location and Background Location. This indicates that the app is using location services.
You can optimize your battery life by turning off Location Services for the app. Turn off in Settings > Privacy > Location Services.
In Location Services, you can see each app listed with its permission setting. Apps that recently used location services have an indicator next to the on/off switch.
Home & Lock Screen. This indicates that the Home screen or Lock screen was displayed on your device. For example, the display was awakened by pressing the Home button or by a notification.
If an app frequently wakes your display with notifications, you can turn off push notifications for the app in Settings > Notifications. Tap App and set Allow Notifications to Off.
Get help with hardware features on your iPhone, iPad, and iPod touch - Apple Support
http://support.apple.com/en-us/HT201401
If you still have an issue with your device, contact Apple Support.
Regards,
- Judy -
Simple script to get battery charge and time remaining...
Here's something I threw together last night, to report on the battery at the command line. It uses /proc/acpi/battery. My battery is C11F, just substitude your own.
It takes (remaining capacity) / (design capacity) to get the percent left, and it takes the (discharge rate) / (remaining capacity) to get approximate life. If the rate is zero (which mine reports as when plugged in) it says the battery is charging.
I don't know if this will work for other people, or if different batteries give different times of information to ACPI.
#!/bin/bash
current=`grep remaining /proc/acpi/battery/C11F/state | tr -d A-z | tr -d " " | tr -d :`
total=`grep "design capacity:" /proc/acpi/battery/C11F/info | tr -d A-z | tr -d " " | tr -d :`
rate=`grep "present rate:" /proc/acpi/battery/C11F/state | tr -d A-z | tr -d " " | tr -d :`
percent=`bc << EOF
100.0 * $current / $total
EOF
`
if [ $rate -eq 0 ]; then
echo $percent'%, charging'
else
hours=`bc << EOF
(1.0*$current) / (1.0*$rate)
EOF
`
minutes=`bc << EOF
60.0 * $current / $rate - $hours * 60
EOF
`
echo $percent'%, '$hours':'$minutes
fizen_guerrilla wrote:You can also try the 'acpi' pkg, which does exactly the same thing .
Considering the acpi package is only dated a few days ago, I don't feel too bad about not knowing about it.
BTW, here's an update I did to my script. This one prints minutes less than 10 correctly (1:02 vs 1:2), as well as finding batteries with other names, and printing the CPU speed (nice if you have speed stepping turned on). It rounds to the nearest 100MHz, which is easy to remove if you don't like it.
#!/bin/bash
speed=`grep "cpu MHz" /proc/cpuinfo | tr -d A-z | tr -d " " | tr -d :`
current=`grep remaining /proc/acpi/battery/*/state | tr -d A-z | tr -d " " | tr -d :`
total=`grep "design capacity:" /proc/acpi/battery/*/info | tr -d A-z | tr -d " " | tr -d :`
rate=`grep "present rate:" /proc/acpi/battery/*/state | tr -d A-z | tr -d " " | tr -d :`
int_speed=`bc << EOF
($speed+50) / 100 * 100
EOF
`
percent=`bc << EOF
100.0 * $current / $total
EOF
`
if [ $rate -eq 0 ]; then
echo $int_speed'MHz, '$percent'%, charging'
else
hours=`bc << EOF
(1.0*$current) / (1.0*$rate)
EOF
`
minutes=`bc << EOF
60.0 * $current / $rate - $hours * 60
EOF
`
if [ $minutes -lt 10 ]; then
echo $int_speed'MHz, '$percent'%, '$hours':0'$minutes
else
echo $int_speed'MHz, '$percent'%, '$hours':'$minutes
fi
fi -
Genius Bar Feedback on Battery Issues
Ok..so I know there are hundreds of posts regarding various battery issues. I thought it might be helpful to post feedback on my genius bar visit today regarding my battery.
The issue with my battery is that the meter seems to be stuck at about 80% full, regardless of how much I use the iPhone or how long I charge it. I have no accurate way of knowing how much battery life I have left. I have even played 6+ hours of straight video to drain the batter and the meter never moves.
Fortunately, my lightning bolt icon (upper right corner) does eventually change to an a/c plug which tells me that the battery is fully charged even though the big green battery is always at 80%.
So the guy at the genius bar tried and inquired about all the usual tricks already discussed in this forum (restore, plug AC adapter to wall instead of USB, turn off wifi, bluetooth, etc). and concluded that it's most likely a software issue.
He did say however that the the usage statistics frequently mentioned here are controlled by AT&T and that it's functionality depends on AT&T sending some sort of over-the-air signal. Don't know if I buy that.
So, in a nutshell, they did not offer to replace the phone (not that they had any in stock anyway), but instead made a notation of the problem using my serial number and told me to wait for an Apple software update, which will most likely correct the problem. If it doesn't, then they can assume a hardware conflict and issue an replacement.
I know this is getting long, but I would like to add that my battery life itself seems fine. I just never know what I have left by looking at any of the two meters.
G5 Duo-Core Mac OS X (10.4.10)My original iPhone had poor battery performance and would not reset the usage stats. There is no Apple Store near me, so Apple support sent a service phone and I sent mine in. The service phone has good battery performance and correctly reset the stats. I was notified that the original phone could not be repaired and a new replacement was sent to me. The new iPhone has great battery performance, but no matter what I try, the usage stats won't reset. Today I was told by Apple support that they believe this is a software issue and a revision would be developed to address the problem. There is no forecast availability date. It doesn't make any sense that a signal from AT&T would have anything to do with the battery stats. The service phone charged and reset the stats before I swapped my SIM into it.
-
Mid 2012 Macbook air battery charging erratically
A few days ago, I noticed that my macbook air was not charging even though it was plugged to the power adapter. After some time, it showed that it was charging, but infinitely slowly. I did SMC reset and after a while, it was charging normally. But the problem reappeared some time later. Some times SMC reset seems to help, some times it does not. Some times it says that the battery is charged, while the battery percentage is showing less than 100. Also, the connecter light is also not synchronous with the battery state sometimes.
I had changed the battery a couple of months ago. The power adapter is also new. Also, I some times hear a very low buzz sound coming from the connector of the adapter.
Battery Information:
Model Information:
Serial Number: D86129705HXDKRNAL
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 406
Hardware Revision: 1
Cell Revision: 162
Charge Information:
Charge Remaining (mAh): 5769
Fully Charged: No
Charging: Yes
Full Charge Capacity (mAh): 6274
Health Information:
Cycle Count: 53
Condition: Normal
Battery Installed: Yes
Amperage (mA): -166
Voltage (mV): 8152
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 10
Wake on AC Change: No
Wake on Clamshell Open: Yes
Wake on LAN: Yes
AutoPowerOff Delay: 14400
AutoPowerOff Enabled: 1
Current Power Source: Yes
DarkWakeBackgroundTasks: 1
Display Sleep Uses Dim: Yes
PrioritizeNetworkReachabilityOverSleep: 0
Standby Delay: 4200
Standby Enabled: 1
Battery Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 2
Wake on AC Change: No
Wake on Clamshell Open: Yes
AutoPowerOff Delay: 14400
AutoPowerOff Enabled: 1
DarkWakeBackgroundTasks: 0
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Standby Delay: 4200
Standby Enabled: 1
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: Yes
ID: 0x0000
Revision: 0x0000
Family: 0x0000
Serial Number: 0x00000000
Charging: YesAssuming you have the tools required (two different screw drivers and a plastic tool to lift the connector from the logic board) you will save about $30. If you don't have, or don't have access to the tools you'll save almost nothing. However, depending on your source you may wind up with a counterfeit Apple battery, a used battery, or a battery that may or may not be truly Apple compatible. Take it to an Apple Store.
-
How to increase the battery life of your N series ...
What I am about to post here is valid for any 3G phone or device regardless of model but it is particularly focused towards the N series devices and their power hogging features.
Your battery life is dependant on many many things. How often you take calls on the device, the condition of your battery, the features you use on the device and so on and on. Therefore it is impossible to say that by following the information in this post you will get x amount of days battery life, but it will get you more time out of the battery than you otherwise would have got.
So with that out the way, if your looking to increase your battery life then follow these tips and your battery should start looking a lot healthier.
First of all lets start with THE big one. The one that is going to save you the most juice. Switching 3G off.
Yep, you heard me right. Just by switching the 3G capability of your phone off you will add hours and hours to your battery life. How is this so? Allow me to explain...
Due to the rather poor delivery of 3G in the UK by the network operators, it is rare for any 3G phone to maintain a constant 3G signal. Instead you will find that the phone constantly flips between 3G and GSM mode (Keep an eye on your signal one day). Even those of you on Vodafone who probably have the best 3G network coverage will find this is the case.
Unfortunately, this constant flipping between the two modes sucks power from the battery like a vampire as it alters its reception state for the different modes and the constant flipping is..well...causing it do this constantly! It can sometimes even make your phone unavailable for calls for very brief periods as it trips from GSM to 3G and vice versa.
If you need to use 3G for video calls or whatever then I'm afraid your just going to have to live with this but if you don't (And lets face it few of us do) then you can switch 3G off and increase your battery life considerably.
To do this, go into the "Settings" application (Found in the menu somewhere, by default Nokia normally stick it in "Tools"), and then to the "Phone" tab. In there you will see an option that says "Network mode" and you have a choice of "GSM" or "Dual Mode" (I.e. UMTS and GSM). Set it to GSM and your phone will restart. Once it restarts it will be working in GSM with GPRS speeds only but really for most purposes this is fine.
You have now just extended your battery capability considerably. You can further extend it by going to the "Connection" tab, going into "Packet data" and changing it to "When needed" so it is not constantly checking for a data connection.
The second big change you can make is to turn your phones wifi scanning capability off. The last time I looked not all Nokia's phones that have wifi capability can have their wifi cards switched off entirely but if you can, turn it off except for when you need to use it. Wifi is a power hog.
The next big change you can make is to lower the screen brightness settings on your phone. The less bright your screen is the less power is being used to light it up. Nokia by default leave the screen brightness at something like 50%. Lowering this a bit more will conserve more juice. Before you do this though please consider the fact that lowering the brightness setting will have a big impact on your ability to see the screen clearly in sunny conditions although you will be fine in the dark as you can't lower the brightness that far.
To lower the brightness, go to the settings tool in your phone and into the display option (Hidden in a subcategory called "Personalisation" on the N95). It won't hurt to set the power saving time out to 1 minute and the backlight time out to 10 seconds while your here (Although these are the Nokia default so they should already be set to this).
Finally in regards to the screen, although they may look pretty, animated screensavers use more battery power than the standard blank screen with time and date so avoid them if you can.
It also helps to keep Bluetooth switched off until you need it although the power savings are minimal in comparison to the other changes but every little milliamp counts!
Using the above methods I generally get about 3 to 4 days with about 3 hours talktime on my N95 without using Bluetooth, GPS or anything like that (I might be able to get more but so far I have not paid attention to the battery state before I put it on charge). If I am on a long train journey I can get about 4 hours worth of full screen video and about 2 hours talktime over the period of about 24 hours before it needs a recharge. As I said at the start of the post your mileage will vary greatly depending on how you use your device.
Hope this helps.
Useful links: Phone firmware update | Nokia support site02-May-200701:14 PM
bixby wrote:
no keffa it is a cop out from nokia
its not unfai as its a premium device with a premium price
the n95 battery is atrocious
dont change the post content as the title is 'How to increase the battery life of your N series device'
your talking about nokia phones specifically
the networks are not to blame
they do not make the handsets : Nokia do !!!!!!!!!!
I'm going to choose my words carefully here...
I would never deny the battery on the N95 is not really up to the job of powering the N95 with its power hungry features. To put the same battery into a phone that has WiFi, GPS and a large 320x240 screen, the same one that goes into the E65 which has comparatively nothing compared to it is a bit pants.
However at no point was I criticising them for the band hopping problem. I labelled the post as how to increase the battery life of your N series device because this is a board for the N series devices. It was a simple choice of wording and not intended to be cutting in any way and I did make a remark that the details would be true of any 3G device at the top of the post.
What I was trying to point out in my second post is that the constant band hopping the phone is being forced to do that is draining its battery so much more quicker than it would if it had a constant signal of one kind or another isn't quite Nokia's fault.
They build it to conform to a laid out specification for 3G. However if the network operators cannot be bothered to roll out their 3G infrastructure adequately enough that the phone can find and remain locked onto a 3G signal that is usable then what are Nokia to do other than offer you the capability to turn 3G off until you need it (Although note to Nokia: That **bleep** reboot the phone does when you do this is entirely unneeded and you know it).
Blaming Nokia for this would be like blaming the manufacturer of your radio for failing to pick up radio because the radio station does not have any transmitters within range of your radio's receiver.
Finally...this band hopping is exhibited by all 3G phones built by Samsung, Nokia, Sony Ericsson, etc, from their most budget 3G model to their priciest piece and is the reason that all phones with 3G capabilities have batteries that do not last for any respectable length of time because these phones are also having to band hop between 3G and GSM.
Finally the proof is in the pudding. Turn 3G off for a few days. See your battery improve. Then (Although admittedly this will be harder to do...mcuh harder) find an area where you get a fairly decent 3G signal constantly. Again, see your battery improve. Try it with a different 3G phone...different manufacturer even. The same will be true.
So I stand by my comment, the network operators and their woeful 3G rollout are the villains costing you a fair chunk of your battery and Nokia cannot be expected to mitigate this....but a better battery would be nice all the same...
Useful links: Phone firmware update | Nokia support site
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