Measure battery capacity (not battery meter)?

Is there an app that measures the battery capacity (i.e. shows the maximum charge it can hold), and compare it to a new ipod touch's battery? If such app exists it would probably require you to fully charge the device and then let it discharge for a while.
I'm not looking for a battery meter, which shows only the current charge.

Hi Kappy,
I got your point. However, I'm talking about capacity here(Watt hours), which is commonly expressed as mWh and for MacBook Pro it should be 60000 mWh, but mine shows 55000 mWh. Here are the specs for MacBook Pro http://www.apple.com/macbookpro/specs.html
I'm referring to Windows porgram just because I'm not that much familiar with Mac OSX yet...but more I use it, more I like it
P.S. Current Voltage is 12.436V and it does change from 9.8V to 12.65 depending on whether the battery is being drained down or charged.

Similar Messages

Ibook g4 that does not display the battery meter, sound volume, tim

I have an ibook g4 that does not display the battery meter, sound volume, time & day.When i move cursor over the area where they should be I see a spinning beach ball beach ball

Choose Go to Folder from the Finder's Go menu and enter ~/Library/Preferences/ as the folder's path. Locate the item named com.apple.systemuiserver with or without a plist at the end, and drag it to the desktop.
(10471)

Time, airport, battery meter will not display.

Hey I have an ibook g4 that does not want to display the battery meter, sound volume, time & day. for some reason. I have looked all over system prefs and got nowhere fast. If someone can let me know whats up...please do. I have tried to right click over it and everything. thanks.
-@

I'm not interested in ascribing blame either but waiting for Apple to fix something that isn't broken will only divert attention from seeking the problem's underlying cause. Assuming the AirPort Utility app on your Mac remains unaltered, it's exactly the same one everyone else is using. Should there be any doubt about that, reinstalling OS X will obviate any concern.
I suggest the following for you to consider as you deem appropriate.
Apple's Wireless Diagnostics may supply some additional helpful information.
To use it, hold an option key while you click your Mac's Wi-Fi icon, and choose Open Wireless Diagnostics...
The following authentication dialog will appear:
Authenticate with your Admin password, then click the Continue button in the following:
The network analysis and diagnostic tests will take several minutes to complete:
When it completes, if your wireless network is functioning properly the following will result:
If something is amiss, supposedly the results will be different and you will be presented with helpful information.
Assuming your connection is "working as expected" select Continue to summary and click Continue:
Ignore the pre-populated text field, which is provided as a place for you to type in additional information should Apple ask for it in the course of obtaining technical assistance from them. Apple has no way of knowing where your router is located in your home, and certainly doesn't know if you even have an upstairs bedroom closet.
Click Continue.
The next step will also take a few minutes:
When it finishes, you will be presented with a summary that may or may not be useful to you. Let me know if it is.
The WirelessDiagnostics-xxx.tar.gz file deposited on your Desktop can be dragged to the Trash, or you may wish expand it and examine its contents. It's up to you.

Iphont battery meter not working/ push notifications not working/restarting over and over again.

A few weeks ago, I went on a vacation out of the country. I had my iphone 5 on airplane mode for a week. When I got back and turned it off of airplane mode, it started restarting over and over again right after being plugged into the charger. Eventually, it seems to get ahold of itself and stops turning on and off, but the phone battery meter freezes where ever it is at that point. If it has 100% battery, it says it has 100% battery until it dies. If it only has 1% battery, I'll leave it on the charger long enough to have 100%, but it will still say 1%. The battery life itself is not any different. According to the meter, my phone will stay on all day with 1%. Also, after being dead, my phone would turn on immediately after being plugged in (rather than waiting a few minutes to get enough charge as usual). I think this is because since my phone does not know how much battery it has, it thinks it has enough to turn on right away.
I visited the apple store, and they told me to restore it as a new phone. When I did this, it did not work at first. But after a day, my phone battery life meter started working normally again, and it stopped doing the turn on/turn off continuously thing. BUT imessage no longer worked. It said "waiting for activation" for two weeks. Also, push notifications no longer worked. Every time I openned an app, it would notify my that i could not have push notifications and to connect to itunes. Certain apps wouldnt work at all (snap chat, lulu). They would just give the alert about push notifications over and over again.
I wanted imessage back, so I restored my phone as new once again. This time, imessage, push notification, snapchat, ect. started working again. But, it has gone back to not knowing how much battery life it has and restarting over and over again after being turned on from a dead state. WHAT DO I DO?! I don't want to have either of these problems. It's kind of like my phone has a virus.
note: the first time i turned it on after coming back from vacation, it said "no sim card" for a few minutes.

Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Repair Database. If that doesn't help, then try again, this time using Rebuild Database.
If that fails:
Option 2
Download iPhoto Library Manager and use its rebuild function. (In Library Manager it's the FIle -> Rebuild command)
This will create an entirely new library. It will then copy (or try to) your photos and all the associated metadata and versions to this new Library, and arrange it as close as it can to what you had in the damaged Library. It does this based on information it finds in the iPhoto sharing mechanism - but that means that things not shared won't be there, so no slideshows, books or calendars, for instance - but it should get all your events, albums and keywords, faces and places back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.
Regards
TD

Battery meter not registering correct power remaining?

I have an iPhone 3G 8GB, it has been working fine until recently. Yesterday, I charged it over night and the battery meter was at full green. I had used it a bit throughout the day. I got a phone call around noon and suddenly the phone shut off and showed the battery in the red with the "charge" symbol below it. I plugged it in and charged it back to 100%. This morning, I've already used the phone quite a bit and the bar is still at full green, which is very unusual. I have powered off a few times to see if that worked to get the meter to read correctly and it still shows full charge.
Is there anything I can do to get it to show the correct battery life again?

Do you have an exchange account set up? If yes, delete it and set it up again.
Try to restore the phone "as new iphone" to make sure no corrupt data is copied back and see if this solves the issue. If not, you'll have to see your next Apple Store or call Apple to get it serviced.

[B560] Battery meter, wifi strength meter not working in notification area

This all started when I had my laptop on my lap, and the battery slipped out of place (one of the clips must have slid to unlock).
Battery meter, when hovered over, shows that laptop is "plugged in and charging" but shows a red X over the battery.
Wifi meter shows the blue "thinking" circle, when hovered over shows I am connected and have internet access.
Another thing that's not working is the screen brightness and volume meters that appear when unsing Fn+arrow keys (they still function, but the meters don't appear on the screen).
This is such a strange combination of problems, I have no clue what's going on. I've uninstalled and reinstalled the lenovo energy management drivers, with no luck.
EDIT: And now I'm getting this error when trying to reinstall lenovo energy management

Hi
Maybe this workaround would help you:
1) Open the Start menu, and type gpedit.msc in the search and press Enter.
2) UAC notification would appear, so click Enter.
3) Now you can set and manage the Local Group Policies
4) Open the all users and on the left side (pane), click on an expand User Configuration, Administrative Templates and Start Menu and Taskbar.
5) Search in right pane for Remove the battery meter and click on Edit.
6) to Enable the Power Icon - Select Disabled or Not Configured and click OK.
7) Now reboot the notebook
Good luck

I just recently installed mountain lion and an update for SMC firmware to install power nap. Everything is working except for the menu bar, the icons native to the system do not respond, and features like the clock and battery meter freeze.

I just recently installed mountain lion and an update for SMC firmware to install power nap. Everything is working except for the menu bar, the icons native to the system do not respond, and features like the clock and battery meter freeze.
When I mouse over the icons, the rainbow appears as if it was processing something. The problem is eliminated when I restart my computer but it comes back after a while.
I guess I cant make a backup copy and restore the whole disk because the copy would be made with this error.
Can anyone help me? Anyone with the same issue?

Update: I was able to test out the HDMI adapter as well and the same issue occured. I'm stumped. 10.8.1 maybe.

Battery Meter Red, Not Charging when plugged

Last night i was using my phone to browse and surf the net. the battery was running out finally it gave me a graphic that i need to plug it in. The graphic was a plug + the electricity symbol. So i plugged it in and the plug and the electricity turned into just the electricity symbol. so i went to bed and when i woke this morning, the phone was on the same screen. It had the battery meter in red, the electricity symbol on the but no charge. So i checked the plug on the wall, and it works. So i decided to plug it in to the computer and still the same. No charge going through.....
I restarted it while still plugged and nothing.
so finally i restarted it, unplugged the cord....then replugged it and it finally started getting charge...
Has this happened to anyone? Or is there some kind of safe gaurd that i dont know about and just making a full of myself on here?

Ok I think I have an answer. This happened to me twice and both times, it resolved the same way.
CAUSE: Both times, this happened when I let the battery run down too much. I was playing a game or listening to music and ignored the low battery warnings thinking I could push it and eventually the iphone shut down. No problem, I thought. I can just plug it in and keep on going. But when I plug it in, the iphone won't charge ... like it normally does. I get the red battery meter and the plug and lightning symbol as previously described. The phone won't turn on. I tried resetting it several time - hard resets as well - with no response. Always to the screen with the red battery.
SOLUTION: What i did both time was to keep the phone plugged in for at least 4 hours and maybe even more. I noticed that the red battery symbol flashes when it is not plugged in but when it is plugged in - the red battery symbol does not flash. Even though the phone is non-responsive in every other way, it seems to recognize if it is plugged into a power source or not. So I kept it plugged in for several hours. By the way, the phone is totally unusable during this time.
After that time period - I did a hard reset and the phone booted up with the white apple symbol and I started recharging again - this time it took.
I did this TWICE so I think it will work in the future.
THEORY: I am not a computer person (I'm a gynecologist in real life) but I will try to explain this behavior as best as possible. I think when the battery runs down too low it shuts down. But it shuts down EVERYTHING! Even the software that charges up the battery - which is a bug that Apple needs to fix - but everything shuts down. So this may sound stupid but it seems that when it is shut down to this degree the phone does not know how to charge itself. That is why nothing works. The phone remains shut down. It does not reboot. It does not charge up. However, as noted above, the phone does seem to recognize when it is plugged in to a power source or not as indicated by the flashes on the red battery symbol. It flashes if it is not plugged in and it stops flashing when it is plugged.
Anyways, even though the phone does not know how to charge up, it is charging anyways - but only by a trickle. A microscopic trickle. And it takes a couple of hours via this trickle to charge up the phone to a certain level to be able to reboot. After the reboot - you have to charge up the battery again - but since the phone is now working, it knows how to charge itself up normally.
Again, this is an amateur theory but I can't explain this behavior any other way.

Macbook pro is not getting turn on and further when i press power button the green orange light suddenly changes to green again, moreover battery meter is not working

Hi
Last night my macbook pro gets off automatically when battery gets empty and in the morning it isn't turning on. When i connect the charger, the light on the charger turns green to orange (showing that it is charging) but when i press the power button it suddenly changes to green again. I thought there must not be any connection between the charger light and the power button. And battery meter was running fine.
When it tried this again and again the charger light disappear and battery meter also stops working, when i clearly observe it there is a very dim green light in the charger (not observable in the light) and the laptop is still not showing any change.
please help!

Try Resetting the System Management Controller (SMC)
Apple - Batteries - Notebooks

My battery meter is not showing up. Also when I plug my cable into charge the computer sparks are being discharged from the connection at the computer. What is going on?

No battery meter is showing up on display and sparks are discharged when computer is first plugged in. What is going on?

Hello Toniamato,
It sounds like your phone is not charging or charging very slowly. I would use these troubleshooting steps from the following article:
iPhone and iPod touch: Charging the battery
http://support.apple.com/kb/HT1476
If your battery doesn't charge, or if your device shows a low-battery image, black screen, or "accessory not supported" alert, follow these steps.
Inspect the connector at the bottom of the phone:
Make sure that there are no bent pins in the connector.
Make sure that the connector is free from debris.
If there are bent pins or debris, please contact Apple Support.
Otherwise, continue troubleshooting.
Make sure that the outlet you're using works.
Make sure that the Apple USB cable and Apple USB power adapter work.
Plug the device in to power and let it charge for up to 30 minutes. If you don't have an Apple USB power adapter, try connecting to a computer's high-power USB 2.0 port (not a keyboard). The computer must be on.
If the device still exhibits an issue, try turning your device off and then on again while connected to power.
If the issue is persists, please contact Apple Support.
Thank you for using Apple Support Communities.
All the very best,
Sterling

Clamshell - battery meter problem?

Somebody has to be able to explain this one to me...
I bought a used graphite 466 to hold me over until I can save up for a brand new laptop. It was running like a dream, at least until...
I turned it on one morning, as I usually do... and the battery meter was acting really weird... I still got my 4 hours of use out of it, but the meter very slowly ticked down to about 95%, then took a huge nosedive down to just 5% in an instant... I was forced to run off the adapter until my class was finished, and I brought it home...
I was at home, adapter hooked up so I could recharge it while I continued using it. The charge slowly crept up to maybe 9 or 10%, then jumped straight to fully charged. That was the point where I realized something was very wrong... so I scoured the support pages, and the discussions, to try to find something that matched what was happening with mine.
I did the PMU button, reset the NVRAM through open firmware... I even let the battery run down fully and took it out of the laptop for the night...but there was no change...
Next, I decided to download one of those programs to check the battery... and either I'm very confused, or the numbers just dont add up.
According to XBattery, my battery stats right now (fully charged and running off the adapter) are:
installed: yes
charging: no
charger: yes
battery %: 100
(so far, all makes sense... what a fully charged battery should say, I would think... but then it gets weird)
Max. cap: 3.600Ah
Curr. cap: 64.860Ah
Charge: 64.860Ah
(this part makes me think maybe the labels for these numbers are mixed up somehow... how could my current capacity be that far above the max?)
voltage: 16.858v (the adapter itself says it should be 18v, but this is close enough)
amperage: 0 (it's not currently drawing any power from the battery... i guess?)
cycles: 80 (charge cycles, I guess...sounds way too low for it to be a battery problem... )
Flags: 2d000005 (no clue... I'm sure they mean something, but I don't know what...)
Now, I'm no expert as to what all those numbers really mean, but my impression is that it's not a battery problem per se....
Anybody have any idea what's wrong with my machine? Is there something simple that I'm missing here?

I ran a terminal command to show my battery information:
"IOBatteryInfo" = ({"Capacity"=64860,"Amperage"=0,"Cycle Count"=90,"Current"=3363,"Voltage"=16415,"Flags"=754974725,"AbsoluteMaxCapacity "=3600})
While I'm no expert, I think I have at least some grasp of what it's saying...
Capacity is 64860mAh, which XBattery lists as 64.860Ah... different units, same thing...
Cycle Count is now up to 90... that's fine... I've charged and discharged a few times since last time I checked the count...
Amperage is at 0, even though the menu says it's charging... not sure how that is true...
Voltage is 16.415... not too far off from the 18v listed on the outside of the power adapter... that's acceptable...
For the flags, 754974725 in decimal is the same as 2d000005 in hex, which matches XBattery...
The part I don't get is... if I'm showing a charge of 3363 out of a max of 3600, why is it only at 5%? The only way it could be was if it was comparing the charge to the current capacity... 3363/64860, which is about 5.2%...
For some reason, the computer is not giving it more power, because it's so close to that 'assumed' capacity... 3600 space left on a 64860 battery, which would be around 95% charged... and that's before counting the 3363 I 'persuaded' the battery to accept... But when it checks capacity after I unplug the adapter, it is nowhere close to what the machine was 'assuming' while the adapter was connected...
I would think my computer (or any computer for that matter) would be smart enough to at least pose the question as to why the 'max capacity' is so far below the 'current capacity'... It's like saying 'This basket holds 36 apples maximum, but currently, it's holding 640+ apples... it doesn't really make much sense... There is no situation in which both statements could EVER be true for that one single basket, or my battery in this case...
You'd think an error screen would pop up or something: "The battery is currently sending unreliable and conflicting capacity data, so therefore, time and charge percentage are unable to be calculated in any reliable fashion..." Then it should instruct me on what to do to correct it... Or, at the very least, suggest that I call for assistance... right?
This issue has evolved from weird to downright annoying... I just wish I knew what the real problem was so I could fix it already!

IPad 2 battery meter stuck, anyone else?

It seems after downloading a few apps and putting the iPad to sleep with wifi on the battery meter stops updating the next day when I wake it from sleep. I used to notice the ipad draining by 1% every 9 minutes, but now it has been 20+ minutes and no change. A reset seems to fix the problem, but is anyone else encountering this issue or willing to test? I'm on iOS 4.3.5

Ater a few more weeks of testing, I have noticed several more details about the battery. After a full charge to 100%, the first few % (going from 100% down to 90%) takes longer to drain compared to the rest of the battery. So going from 100% down to 99% took me 22 minutes and towards the 90% mark, I noticed more consistent drainage (about 9 minutes for every 1%)
The second thing I noticed is that downloading apps had nothing to do with the battery meter getting stuck. It just took a really long time (about 27 to 30 min) for it to get unstuck after I first woke it from sleep. This would happen only when I left the ipad for long periods of inactivity (sleep). It would not happen after putting it to sleep and waking it up in 10 minutes (battery continues to drain properly).
The third thing I tried to test was to rule out the battery meter reporting the % incorrectly. If the meter was following a pattern whereby it was stuck at 100% for 30 min and then continued to drain properly, this should affect the ipads battery life. I continued to use the ipad over the course of a week (with the meter getting "stuck" several times) until it hit its final 1%. I was able to use it for about 6-7 minutes before it died. Basically the ipads battery meter was reporting the % accurately (even with the meter being "stuck") or the ipad would have just died at around 2% or more since the ipads battery meter was constantly getting "stuck" over the course of the week.
I think this has something to do with the rechargeable batteries themselves. For instance; after heavy usage of the battery followed by a long period of rest, the battery seems to gain some of its charge back or at least retain a higher capacity (this would explain why the battery meter seems stuck when you wake it from a long sleep). However; after heavy usage and a short rest period, the battery seems to not retain this ability.
I'm not sure if this phenomenon applies to all rechargeable batteries and it would be great if other ipad owners would post their experience (not even sure if anyone else actually takes the time to stare at their battery meter and time it for every % that goes down lol).

When I plug my ac adapter in to charge my macbook, the battery meter goes to "0". Help?

Ok so I had 9 battery percent left and i plugged my macbook in to charge it. The battery meter on screen went to "0" with the little charging symbol next to it. When i pressed the battery indicator button on the side of the macbook, it only showed one dot. The battery status says "Condition: Replace Soon" and these are the power specs:
Battery Information:
Model Information:
Serial Number:          9G907042T13DB
Manufacturer:          DP
Device name:          bq20z951
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          002a
Hardware Revision:          0005
Cell Revision:          0100
Charge Information:
Charge remaining (mAh):          201
Fully charged:          No
Charging:          Yes
Full charge capacity (mAh):          2656
Health Information:
Cycle count:          508
Condition:          Replace Soon
Battery Installed:          Yes
Amperage (mA):          2011
Voltage (mV):          11700
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          0
Disk Sleep Timer (Minutes):          0
Display Sleep Timer (Minutes):          0
Automatic Restart On Power Loss:          No
Wake On AC Change:          No
Wake On Clamshell Open:          Yes
Wake On LAN:          No
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
Battery Power:
System Sleep Timer (Minutes):          0
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          0
Wake On AC Change:          No
Wake On Clamshell Open:          Yes
Display Sleep Uses Dim:          Yes
Reduce Brightness:          Yes
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          Yes
ID:          0x0100
Wattage (W):          60
Revision:          0x0000
Family:          0x00ba
Serial Number:          0x00e1294f
Charging:          Yes
Is this normal because my battery is getting weaker?
How much longer do I have with my current battery before I need to replace it?
Thanks a lot.

According to your cycle count (508), you've done extremely well - the normal life cycle for a battery is considered to be about 300 cycles (those are charge cycles). And yes, batteries do not last forever - be happy it lasted this long. So, I'd say it is time to get a new one to have on hand when this one drops out altogether.

Battery meter reads only 0-1%, or 99%.

OK, well this a little hard to explain but I'll try my best:
Basically, one day a couple weeks ago I took my PowerBook to school and had it in class and basically drained the battery completely to 0%, managing to still continue working about 30-35 minutes after reading 0%. OK, so it powers itself off and goes to sleep. Understandable. I put it away and charged it back up at home later that night.
The problem now is that the battery meter up at top no longer gives me accurate readings on the battery. When the battery has been charging for about as long as it usually would take for it to say 100%, it stays at like 2%. Sometimes, it'll just jump right from 1 all the way to 99%. Ok, like right now it said 2% but now went to 1% even though the AC adapter is still connected and the light has remained on. I have not seen the percentage say anything between 3 and 98% ever since the day I used it in class. It will go from 0-2%, then occasionally to 99% and back to 2, 1, 0. To make this problem seem even a little more strange, before this problem started showing, the computer would rarely start itself up again in the morning without being plugged into the wall first. Essentially, it would become "cold" overnight, and I'd have to plug it in first to the wall to start up. NOW, this thing always wakes up from sleep in the morning or basically whenever no matter how little battery life I think it has.
I got my computer in Jan/2004 and it still has the original battery. Needless to say, I was already getting some pretty short battery life. I'm not sure what the proper procedure on batteries in these things are, if I should have replaced it by now with a new one?
HELP!
--DANIEL
(FYI, the meter has now been stuck back at 2% for about the last 10 minutes.)

Try resetting the PMU…
http://docs.info.apple.com/article.html?artnum=14449
… and then subsequently calibrating your battery…
http://docs.info.apple.com/article.html?artnum=86284

2.1 firmware update displays incorrect battery meter

After installing firmware 2.1 on my iphone I started noticing my battery meter displaying the incorrect charge level. I charged it in full yesterday, and this morning I still had more than half the battery meter. I checked 10 minutes later and the meter was now showing 10% left with the red battery meter.
I went ahead and charged it again , used it for a while and now noticed that the battery meter is not only showing the incorrect amount left (still) but shows a different battery status on different menu screens. Shows battery meter to be full in the home screen and half the meter on an app, email ,etc.
Firmware 2.1 has definitely messed up the meter!
inaccurate reading on the battery meter , someone else has to be experiencing this same problem.
let me know if someone else has this same problem !

try draining out the battery first and then recharge it, see if that shows an accurate. I had that happen to me on the 2.02 update. The battery meter was inaccurate. Like when i reached 20% it was actually at 50% when i plug it in to charge. So i did sent them a feedback about it. So I'm hoping that the 2.1 fixes this issue. So far my battery is showing at 100%.
Usually for me at the end of the day after a full charge in the morning, the battery meter would go down 1 bar. So i'll have to wait and see.

Measure battery capacity (not battery meter)?

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