Weird battery levels...

Hello,
Does anybody know why my battery jumps from 8.30 hours left to 5 hours and back to 6.45 etc.?
I bought it just one week ago at the online apple store & it's my first MB so I don't know a lot about it...
Thank you !

Your machine's use of power is varying with what you and your operating system are doing, so its projection of the amount of time it will last under the present moment's load differs from the projection it made based on what the machine was doing a few minutes ago, or might be doing a few minutes from now. The estimate of time remaining depends on how much energy the machine is drawing at any given moment, and varies as the load varies.
The estimate of time remaining is never anything but an approximate estimate. The only number that actually counts is the amount of time the machine actually does run on a charge, regardless what the estimate says. Your actual running time will also vary (to a very large degree) with what your computer is doing while you use it.

Similar Messages

6500 slide False Battery Level Reading.

Hi,
Just wondering if anyone has had their battery level showing as full when it is actually very low.
This started happening after I updated my phone to firmware v 8.30, but probably more relevant after discharging the battery fully (as recommended)to improve battery life.
Thanks.

I have a 6500 classic and the battery started doing the weird levels.
Showed that the battery didn't need charging as said was full but when took it off the charger it said battery low.
Would not charge even after being on the charger all night.
Sometimes works in the car charger (needed one as battery doesn't even last 1 day at work since bought the phone) but after showing 3/4 full, get 1 call and then beeps at me to show about to go flat.
Phone is only 1 year old.
Ordered a new battery so will see how it goes when it comes in on Monday....

10.5.8 won't show UPS battery level

I just installed an APC Smart UPS 1000 VA UPS to my Mac Pro server. The USB cable is plugged in and the UPS battery is fully charged according to the display on the UPS itself. The Energy Saver control panel is the APC preferred control method (they do not supply software for MAC OS X after 10.4) and all the controls appear as expected with the exception that the Battery Level indicator at the top of the Prefs panel shows 0% full.
I've unplugged and plugged it back in to no effect. I restarted the server. I turned off the power at the wall switch and the UPS ran the server with no dramas for about 10 minutes. Nothing I tried had any effect.
There is nothing in the APC support site other than instructions for using Energy Saver panel.
Our power here has been pretty flaky this year and I want the server to gracefully shut down after about 10 minutes of an outage. It won't work if the UPS won't talk to the copmputer.
Steve

Have you checked to see if another USB device works on the USB port the UPS is connected to?
You could try some of the suggestions for USB ports not working:
USB and FireWire Quick Assist
http://support.apple.com/kb/HT1151?viewlocale=en_US
Common fixes for USB device issues (unrecognized, etc.)
http://www.macfixit.com/article.php?story=20070824012114701
 Cheers, Tom

10.5.2 doesn't fix UPS battery level display

I was hoping this bug in Leopard would be squashed in 10.5.2. Nope!
When I reboot, the battery level display in the Menu bar and Energy Saver Prefs Panel show an empty battery and 0% charge level even though my APC 1500 SmartUPS is fully (100%) charged. The only way to get the computer to recognize the charge level is to put the UPS through a test cycle which resets the USB connection to the computer and forces the computer to pick up the data properly.
This worked properly in Tiger without having to recycle the UPS.
Griff

I'm getting the same issue, sits there at 0%
This is a real pain because I have it set to auto shutdown when the batteries get to 20%. Any power blip causes an immediate shutdown.

Flex 2 14 Battery Level Dropped from 57 to 7 in seconds

I've been using my Flex 2 14 for around 3 months. However, recently I've encounter a situation whereby my battery level had dropped from 57% to 7% in split second when I'm not plugged in. I was wondering could it be an manufacturing defect and what should I do to fix this problem?
Note: I use this laptop while plugging into the charger most of the time. The battery level is usually kept at around 55~60 only with the help of energy manager. Also, I had performed battery gauge reset once.
Any suggestions will be appreciated.

SOLUTION FOUND !
I just found a solution to my battery issue that is apparently due to a bug on the latest update of Snow leopard (10.6.8). Parallels desktop that was in the Dock was making the Dock taking 100% of the CPU activity (checked in the activity monitor) using battery and heating my computer.
After I checked for such cases on teh web (see: http://forums.macrumors.com/showthread.php?t=1181176 ), I removed Parallels Desktop and Windows Applications folder from the Dock and situation seems to be back to normal...
RF

Battery level when out of box + real autonomy

Hi!!
I just bought a New Ipad (3). When out of the box, the battery was only charged to 69%, is that normal? Right after I turned it on for the first time and set it up, the battery decreased to 64% after only 10 min. Do you think it has a problem?
One more question: when it says "up to 10 hours" autonomy, does it mean I can stream for 10 hours (Netflix for exemple) ? Or is it more the average autonomy for an average us (web + some video + reading...etc)?
How long can the battery last when streaming 100% of the time (such as Netflix) ? Same question for when watching movies that are on my ipad (no streaming) ?
Thank you for your support.
JM.

The quickest way (and really the only way) to charge your iPad is with the included 10W or 12W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.
How to Calibrate Your Mac, iPhone, or iPad Battery
http://www.macblend.com/how-to-calibrate-your-mac-iphone-or-ipad-battery/
At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html
Also, if you have a 3rd generation iPad, look at
Apple: iPad Battery Nothing to Get Charged Up About
http://allthingsd.com/20120327/apple-ipad-battery-nothing-to-get-charged-up-abou t/
Apple Explains New iPad's Continued Charging Beyond 100% Battery Level
http://www.macrumors.com/2012/03/27/apple-explains-new-ipads-continued-charging- beyond-100-battery-level/
New iPad Takes Much Longer to Charge Than iPad 2
http://www.iphonehacks.com/2012/03/new-ipad-takes-much-longer-to-charge-than-ipa d-2.html
Apple Batteries - iPad http://www.apple.com/batteries/ipad.html
Extend iPad Battery Life (Look at pjl123 comment)
https://discussions.apple.com/thread/3921324?tstart=30
New iPad Slow to Recharge, Barely Charges During Use
http://www.pcworld.com/article/252326/new_ipad_slow_to_recharge_barely_charges_d uring_use.html
Tips About Charging for New iPad 3
http://goodscool-electronics.blogspot.com/2012/04/tips-about-charging-for-new-ip ad-3.html
How to Save and Prolong the battery life of your new ipad
https://discussions.apple.com/thread/4480944?tstart=0
Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
http://thehowto.wikidot.com/prolong-battery-lifespan-for-ipad
iPhone, iPod, Using the iPad Charger
http://support.apple.com/kb/HT4327
Install and use Battery Doctor HD
http://itunes.apple.com/tw/app/battery-doctor-hd/id459702901?mt=8
In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.
 Cheers, Tom

ACPI battery level stops updating

Hello,
I have a strange problem with battery level (displayed using xfce4-power-manager). At startup it updates but not very precisely (not percent by percent), after some minutes it stops updating.
I thought it was an xfce problem, so I installed xfce4-power-manager-git. But reading acpi status and getting /sys/class/power_supply/BAT0/ info reports same results as xfce. ACPI does not update battery level!
Why acpi stops updating my battery level?
I'm using kernel 3.15.10-1
xfce4-power-manager-git
xfce4-power-manager 1.4.1-1
upower 0.99
lah

No one interested about this problem?
Now, to get battery level I'm manually polling using a cron job executing acpi -V command...
I've not yet found another solution to get battery level update working.
I found another interesting point. When I resume from suspend battery level updates... Here are my logs when suspending / resuming
dmesg
[ 1137.086386] wlo1: deauthenticating from 00:1f:9f:e7:22:53 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 1137.092006] cfg80211: Calling CRDA to update world regulatory domain
[ 1137.168083] IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
[ 1137.307402] PM: Syncing filesystems ... done.
[ 1137.390588] PM: Preparing system for mem sleep
[ 1137.390812] Freezing user space processes ... (elapsed 0.001 seconds) done.
[ 1137.392234] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 1137.393433] PM: Entering mem sleep
[ 1137.393499] Suspending console(s) (use no_console_suspend to debug)
[ 1137.394631] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 1137.394711] sd 0:0:0:0: [sda] Stopping disk
[ 1137.557027] e1000e: EEE TX LPI TIMER: 00000011
[ 1137.809968] PM: suspend of devices complete after 416.371 msecs
[ 1137.823466] PM: late suspend of devices complete after 13.483 msecs
[ 1137.824416] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
[ 1137.824592] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI
[ 1137.824603] e1000e 0000:00:19.0: System wakeup enabled by ACPI
[ 1137.824680] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
[ 1137.836734] PM: noirq suspend of devices complete after 13.269 msecs
[ 1137.837000] ACPI: Preparing to enter system sleep state S3
[ 1137.853504] PM: Saving platform NVS memory
[ 1137.853505] Disabling non-boot CPUs ...
[ 1137.853535] intel_pstate CPU 1 exiting
[ 1137.854780] kvm: disabling virtualization on CPU1
[ 1137.854790] smpboot: CPU 1 is now offline
[ 1137.855147] intel_pstate CPU 2 exiting
[ 1137.856377] kvm: disabling virtualization on CPU2
[ 1137.856383] smpboot: CPU 2 is now offline
[ 1137.856949] intel_pstate CPU 3 exiting
[ 1137.858168] kvm: disabling virtualization on CPU3
[ 1137.858180] smpboot: CPU 3 is now offline
[ 1137.859931] ACPI: Low-level resume complete
[ 1137.859980] PM: Restoring platform NVS memory
[ 1137.861096] CPU0 microcode updated early to revision 0x1b, date = 2014-05-29
[ 1137.861225] Enabling non-boot CPUs ...
[ 1137.861272] x86: Booting SMP configuration:
[ 1137.861273] smpboot: Booting Node 0 Processor 1 APIC 0x1
[ 1137.873339] kvm: enabling virtualization on CPU1
[ 1137.875919] CPU1 is up
[ 1137.875970] smpboot: Booting Node 0 Processor 2 APIC 0x2
[ 1137.887493] CPU2 microcode updated early to revision 0x1b, date = 2014-05-29
[ 1137.888105] kvm: enabling virtualization on CPU2
[ 1137.890491] CPU2 is up
[ 1137.890527] smpboot: Booting Node 0 Processor 3 APIC 0x3
[ 1137.902171] kvm: enabling virtualization on CPU3
[ 1137.904609] CPU3 is up
[ 1137.908608] ACPI: Waking up from system sleep state S3
[ 1138.663122] acpi LNXPOWER:02: Turning OFF
[ 1138.663203] acpi LNXPOWER:01: Turning OFF
[ 1138.675606] ehci-pci 0000:00:1a.0: System wakeup disabled by ACPI
[ 1138.675825] xhci_hcd 0000:00:14.0: System wakeup disabled by ACPI
[ 1138.675838] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI
[ 1138.722182] PM: noirq resume of devices complete after 58.952 msecs
[ 1138.722883] PM: early resume of devices complete after 0.648 msecs
[ 1138.723159] mei_me 0000:00:16.0: irq 32 for MSI/MSI-X
[ 1138.723478] e1000e 0000:00:19.0: System wakeup disabled by ACPI
[ 1138.726178] snd_hda_intel 0000:00:1b.0: irq 33 for MSI/MSI-X
[ 1138.731841] sd 0:0:0:0: [sda] Starting disk
[ 1138.841851] e1000e 0000:00:19.0: irq 34 for MSI/MSI-X
[ 1138.928730] usb 1-1.3: reset high-speed USB device number 4 using ehci-pci
[ 1139.045227] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 1139.045398] usb 3-2: reset high-speed USB device number 2 using xhci_hcd
[ 1139.045414] xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 1.
[ 1139.045416] usb 3-2: hub failed to enable device, error -22
[ 1139.047871] ata1.00: ACPI cmd 00/00:00:00:00:00:a0 (NOP) rejected by device (Stat=0x51 Err=0x04)
[ 1139.057847] ata1.00: ACPI cmd 00/00:00:00:00:00:a0 (NOP) rejected by device (Stat=0x51 Err=0x04)
[ 1139.058273] ata1.00: configured for UDMA/133
[ 1139.205382] usb 3-2: reset high-speed USB device number 2 using xhci_hcd
[ 1139.205409] xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 1.
[ 1139.205412] usb 3-2: hub failed to enable device, error -22
[ 1139.365138] usb 3-2: reset high-speed USB device number 2 using xhci_hcd
[ 1139.378870] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800b3b73120
[ 1139.841774] usb 3-2.6: reset low-speed USB device number 3 using xhci_hcd
[ 1139.841797] xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 2.
[ 1139.841800] usb 3-2.6: hub failed to enable device, error -22
[ 1140.098137] usb 3-2.6: reset low-speed USB device number 3 using xhci_hcd
[ 1140.098161] xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 2.
[ 1140.098165] usb 3-2.6: hub failed to enable device, error -22
[ 1140.101400] tpm_tis 00:01: TPM is disabled/deactivated (0x7)
[ 1140.101410] rtc_cmos 00:03: System wakeup disabled by ACPI
[ 1140.354747] usb 3-2.6: reset low-speed USB device number 3 using xhci_hcd
[ 1140.370114] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800b3b73180
[ 1140.370126] usb 3-2.6: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
[ 1140.380774] PM: resume of devices complete after 1658.753 msecs
[ 1140.381265] PM: Finishing wakeup.
[ 1140.381268] Restarting tasks ...
[ 1140.381412] acpi PNP0501:00: Still not present
[ 1140.382480] usb 2-1.6: USB disconnect, device number 3
[ 1140.389100] done.
[ 1140.421569] pci_bus 0000:01: Allocating resources
[ 1140.421585] pcieport 0000:00:1c.0: bridge window [io 0x1000-0x0fff] to [bus 01] add_size 1000
[ 1140.421589] pcieport 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 01] add_size 200000
[ 1140.421599] pci_bus 0000:02: Allocating resources
[ 1140.421622] pcieport 0000:00:1c.2: bridge window [io 0x1000-0x0fff] to [bus 02] add_size 1000
[ 1140.421624] pcieport 0000:00:1c.2: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 02] add_size 200000
[ 1140.421632] pci_bus 0000:03: Allocating resources
[ 1140.421658] pcieport 0000:00:1c.3: bridge window [io 0x1000-0x0fff] to [bus 03] add_size 1000
[ 1140.421660] pcieport 0000:00:1c.3: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 03] add_size 200000
[ 1140.421663] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[ 1140.421668] pcieport 0000:00:1c.0: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 1140.421670] pcieport 0000:00:1c.2: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 1140.421672] pcieport 0000:00:1c.3: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 1140.421674] pcieport 0000:00:1c.0: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 1140.421676] pcieport 0000:00:1c.2: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 1140.421677] pcieport 0000:00:1c.3: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 1140.421687] pcieport 0000:00:1c.0: BAR 15: assigned [mem 0xbf200000-0xbf3fffff 64bit pref]
[ 1140.421697] pcieport 0000:00:1c.2: BAR 15: assigned [mem 0xbf400000-0xbf5fffff 64bit pref]
[ 1140.421702] pcieport 0000:00:1c.3: BAR 15: assigned [mem 0xbf600000-0xbf7fffff 64bit pref]
[ 1140.421707] pcieport 0000:00:1c.0: BAR 13: assigned [io 0x3000-0x3fff]
[ 1140.421710] pcieport 0000:00:1c.2: BAR 13: assigned [io 0x4000-0x4fff]
[ 1140.421713] pcieport 0000:00:1c.3: BAR 13: assigned [io 0x5000-0x5fff]
[ 1140.421980] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[ 1140.422076] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[ 1140.549726] e1000e: enp0s25 NIC Link is Down
[ 1140.550076] IPv6: ADDRCONF(NETDEV_UP): enp0s25: link is not ready
[ 1140.577868] usb 2-1.6: new full-speed USB device number 4 using ehci-pci
[ 1140.662671] usb 2-1.6: string descriptor 0 read error: -22
[ 1140.684516] e1000e 0000:00:19.0: irq 34 for MSI/MSI-X
[ 1140.771126] usb 2-1.8: new full-speed USB device number 5 using ehci-pci
[ 1140.784983] usb 2-1.6: USB disconnect, device number 4
[ 1140.787680] e1000e 0000:00:19.0: irq 34 for MSI/MSI-X
[ 1140.971041] usb 2-1.6: new full-speed USB device number 6 using ehci-pci
[ 1141.055968] usb 2-1.6: string descriptor 0 read error: -22
[ 1144.446140] wlo1: authenticate with 00:1f:9f:e7:22:53
[ 1144.455094] wlo1: send auth to 00:1f:9f:e7:22:53 (try 1/3)
[ 1144.457056] wlo1: authenticated
[ 1144.459038] wlo1: associate with 00:1f:9f:e7:22:53 (try 1/3)
[ 1144.463874] wlo1: RX AssocResp from 00:1f:9f:e7:22:53 (capab=0x411 status=0 aid=1)
[ 1144.463995] wlo1: associated
lah

Battery level not shown correctly

Hi! After charging my iPhone5, display continues to show "low battery". If I switch off and on the phone, battery level is shown correctly and decreases correctly till low level; then it rests stuck again. Please help! Thanks!

Welcome to Apple Support Communities. We're all users here.
First, try an SMC reset, as detailed here:
http://support.apple.com/kb/ht3964
Since you mention both battery and performance slowdown, that might cure both issues.
PRAM doesn't often cause the problems you mention but a PRAM reset is detailed here, because people often do both:
http://support.apple.com/kb/HT1379
And your battery may need calibrating, after the SMC reset:
http://support.apple.com/kb/ht1490
And if none of this helps, the battery is likely failing. Even though there is no Apple Store, there is probably an authorized Apple dealer or repair center near you. When I searched from the US, this link appeared: http://www.apple.com/ie/contact/
Another cause of decreased performance is that your hard drive might be getting full. Do you have less than 10% free space? If you recently upgraded to OS X 10.8 Mountain Lion and you're trying to run it in less than 4GB RAM, that may also be responsible for loss of performance. But neither of these issues should cause the battery problems you mentioned.
Message was edited by: kostby

Wireless Keyboard Battery Level Not Changing?

Hi,
I have got a new iMAC machine 21.5" , almost 6 weeks since. I am a regular user. The machine has Mountain Lion OS 10.8.2.
In System Preferences, I can see the Battery level for Blue tooth mouse dropping to 57%, but the keyboard has been showing 100% all the time.
Looks like this is a bug. How do i check the Keyboard Batter Level.
Regards,
Vinay

I bought an 21.5" iMac eight months ago and I did note that the battery level wasn't changing for my Wireless Keyboard as my Magic Trackpad slowly used its batteries up. That being said I changed the batteries in the Keyboard when the Magic Trackpad died assuming the Keyboard was soon to follow and now the battery level is reported accurately. In conclusion I believe that the Energizer Advance batteries that are shipped with the Wireless Keyboard, Magic Mouse and Magic Trackpad had a lot more to do with the problem then the OS. I don't know why only the Keyboard was affected but I do know that now I am using regular Energizer batteries and all is normal as far as usage levels. Hope that helps.

Cannot lower Critical Battery Level in Power Options

I am wanting to adjust the Critical Battery Level in Power Options to something lower than the default 7% that HP has set. When I try to change the number, it will not save and it just magically jumps back to 7%. This means that my laptop will hibernate when the battery level reaches 7% and I cannot turn it back on unless I plug it into AC power. 7% equates to roughly 40 minutes of battery time and I find this setting way too conservative.
I have done some research on this issue and have found the following:
Some suggest that PC manufacturers will somehow lock this setting to an arbitrary minimum and the user cannot change it to anything below this minimum (it appears HP have set it at 7% in my instance).
This link suggests using power.cfg and the command line to make the changes How To Lower the Critical Battery Level to 1% in Windows 7
Steps I have taken to try and resolve this:
I have tried the powercfg.exe method described in the aforementioned link to change the critical battery level to 3% and initially it appears to work. When I open up the Power Options screen, it indeed says 3%. However, when I actually test it out by using the laptop, it will still automatically hibernate at 7% battery level - it simply ignores the 3% setting.
I have also tried using powercfg.exe to change the Critical Battery Action to "Do Nothing" and likewise this setting is ignored and the laptop hibernates anyway.
I have phoned HP support and the only useful information that I got from them so far, is that the PC manufacturer has set it to 7% and it cannot be changed. They said they will escalate this matter to the research team and give me a call back.
I phoned Microsoft support and the consultant seemed to be confident that he could fix the issue but would not divulge the answer because he said that doing so would void the HP warranty and he didn't want to be to one to do that. He suggested that I call HP and request a conference call with Microsoft and they could then fix it. He seemed to be of the belief that if HP has set the 7% minimum that they should be the one to remove the limit.
If nothing works, I wonder if completely formatting the laptop (including removing the HP recovery partition) and then reinstalling a different Windows 8.1 (or Windows 7) will let me have full customization of the Critical Battery Level?
I would really appreciate your thoughts on how to fix this. It really fustrates me that HP thinks they know better and that the user needs to have 7% battery reserved - it is such a waste not to be able to utilize a battery to its full potential.

Hi @Sparkles1 ,
There must be an alternative solution to this.
What is the reasoning behind HP locking this setting at 7% minimum? I understand that a battery should not be run down to 0% as this will damage the battery but 7% is unreasonably high and in fact this does not conform with ACPI standard specification. I refer to the following document: https://msdn.microsoft.com/en-us/library/windows/hardware/dn481320%28v=vs.85%29.aspx
In particular, please see the table where it says that the critical battery level must be set to a value between 0 and 5%
Can you please advise how to change this? I believe this is a software related issue (specifically, the battery drivers). Can you issue an alternative driver to install? If you insist that it cannot be done, I will have no other option than to return the laptop and request a full refund.

N97 mini battery level drops suddenly

I've observed my N97 mini's battery level dropping abruptly from 4 bars to 1 bar (with low battery alarm). The phone's slightly more than a month old and using the latest 11.x.x firmware. Did a bit of googling, and found several suggestions on how to save battery (turn off everything 'smart' on ur phone). That's not the point anyways. I need to find out why the battery level drops suddenly (like what happens when ur battery's dying out), and *not* why the battery lasts X hrs. I'm not sure about this, but I think this mostly happens when the battery level is slightly below max, and I use any app that needs the GPS functionality. But then, there doesn't seem to be any problem with the GPS hardware in the phone, 'coz it usually gets a GPS lock in less than a minute (mostly within seconds). Could it be related to the algo used to show the battery level, or is it that its my battery that's faulty? Any others out there having the same problem?

It's understandable that the batterymeter is not linear (atleast the charge/discharge rates are not). But what bugs me are those sudden erratic drops within minutes (a couple of minutes at times). Anyone who has spent a few days with a dying (rechargeable) battery would know what I'm talking about. It's not a good feeling when u r away from a charge source, and you decide to use one of those power hungry things (like Wifi/GPS) thinking you still have sufficient juice left...and then bam! ... the low battery warning! you just switch off everything, and hope that it lasts till you reach the next oasis. I guess I'd have to analyze this a bit more to understand if its some specific app that causes such behaviour (as mentioned in my original post, i doubt the GPS apps currently). If it happens too often, and even with 'normal' voice+text kind of usage scenarios, its time see Nokia Care I guess. The reason for this post is to know if this behaviour is observed by other N97 mini users as well..then I know there's no point in taking it to Nokia Care.

How can I get the battery level of a connected Bluetooth device on my iPhone 4S?

My Bluetooth device is the Merkury Hexagon Bluetooth speaker, I want to know how to get the its battery level, In the manual, it says there: "Speaker battery indicator will show right on your media device (iOS support only)
Additional details:
- I have the latest iOS
- Not jailbroken
- The speaker doesn't have a "battery indicator" on it

this is not a build in part of any bluetooth profiles so to get that feature one needs third party software from the maker of the bluetooth device installed on the device in question
so maybe you should look for apps made for mercury hexagon in app store?

Battery level in Glance vs. Home Screen

Only just this week was I "fortunate" enough to finally get GDR2 from AT&T for my 920. While I've noticed the FAQ that states that the glance screen and home screen might have differing battery levels, they are sometimes quite noticeably out of sync. I guess my point here is that if the info I'm getting on the Glance screen isn't all that accurate then why really show it there? And furthermore, why only show it while the phone is charging? It's like two stupid ideas piled on top of each other. If I have to go to the home screen it kind of defeats the purpose of having a glance screen anyway right? Any possibility Nokia can figure out how to poll the battery status on a more regular basis and/or poll it upon activating the glance screen? Also why it battery can't be shown all the time on the glance screen instead of only while charging is kind of a mystery.

The Glance screen does not show battery level, it only shows you when you are charging.
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How to check battery level?

Is there a way to check the battery level on the iPod Touch? I recently acquired a new 32 GB Touch, and the first thing I did was upgrade to the 2.0 software. I have been unable to find an option or menu that will tell me how much battery life I have remaining.
In looking around I was able to find that on the iPhone there's a Settings > General > Usage menu, but I don't have that on my Touch.
All I ever get is the 20% remaining warning message. Is there no other way to determine how the battery is doing?
Thanks for the help...
-Gary

Hard to believe they don't have something that tells you where you're at. The icon is okay, but is not as helpful as an approximate percentage or number of minutes remaining. I realize battery life remaining can change drastically, say if you start watching a movie, but it would be nice to have something a little more substantial.
I submitted feedback...thanks for the link.
-Gary

Is that normal? My iPod touch G5 standby after fully charge 2 hr 58 min. then level battery is 68.5%. (use voice over to read battery level)

Is that normal? My iPod touch G5 standby after fully charge 2 hr 58 min. then level battery is 68.5%. (use voice over to read battery level)

I do not understand what "My iPod touch G5 standby after fully charge 2 hr 58 min." means.
Also % battery is not accurate for an iPod. It fluctuates.
Maybe this will help:
iPod Toch 5G (iOS 7.0.3) charges way...: Apple Support Communities

Weird battery levels...

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