10 hours battery time?

Wonder how the battery time is calculated.... i have calibrated it twice and yet the battery can only last for about 5 hours only where I have only opened safari, microsoft word and excel...
is there any problem with my battery?
PS: i just bought it early of June 2010.

Sharon Tan,
Welcome to the forums.
The 10-hour battery life for your MacBook Pro is Apple's claim, which is tested by 'light' web browsing, and low screen brightness.
You say you have Safari opened up, are you watching any videos or playing any games? If so, the decrease in battery life may have something to do with Flash, which is a huge CPU drain and can drastically reduce battery life.
Also, if you have the brightness of either your screen or keyboard turned way up, battery life will go down.
-Oki
Message was edited by: saxon48
Message was edited by: saxon48

Similar Messages

Since allowing my upgrade to happen, I am unable to double press and shut off apps that are now eating up my battery time. It doesn't "wiggle" anymore to allow me to do this. Any help would be greatly appreciated.

I am a new user and when the phone asked for the upgrade.. I have had a lot of problems. First it eliminated all of my contacts. Also, I use to be able to close open apps to reduce battery usage by holding my finger on the apps until they "wiggled" allowing me to shut the active app off. I cannot do this any more and now my battery time is lasting about 5 hours tops. This is without me using any apps other than answering calls. Can someone please help.

having apps in the multi-task doesn't eat up battery http://speirs.org/blog/2012/1/2/misconceptions-about-ios-multitasking.html
tips for battery http://osxdaily.com/2013/09/19/ios-7-battery-life-fix/

Battery time and enhancement features

Smartphone’s are known for consuming a lot of battery power and depending on your configuration your phone might last longer or shorter than other phones. This topic contains some advice and info about what you can do to increase your battery time.
When using your new Android phone it will take approximately up to a week or so before the phone settles in its battery usage and power management, depending on applications installed and the amount of content in your phone. It’s worth mentioning that this evaluation that the phone runs in the background at first period of use will happen again after master reset or reinstalling/repairing the phone software. So if you have just reset or reinstalled your phone, this power management evaluation process will run again. So it might at first seem like your phone is consuming more battery power than before the reset, but its normal.
If you have been using your phone for a couple of week and still think that the battery time is a bit too low, here’s some advice that will increase the battery time.
First of all make sure that your phone is running on the latest version of the firmware. You can use PC Companion to check for software updates for your phone.
http://www.sonymobile.com/gb/tools/pc-companion/
Or Bridge for Mac if you’re a Mac user:
http://www.sonymobile.com/gb/tools/bridge-for-mac/
You can also check battery consumption via the menu; Settings > About phone > Battery use, or Settings > Battery, or Settings > Power management > Battery.
Things that can be disabled or reduced when you don't need them:
Dim the screen
Disable live wallpaper if used
Turn off 3G (WCDMA), 4G (LTE).
Turn off mobile data traffic
Turn off Bluetooth®
Turn off Wi-Fi®
Turn off GPS
By doing this you will increase your battery time. But if you're still experiencing a low battery time you can try the following as proposed by many users on the forum. (Only applies for phones using removable battery)
When phone reaches 50% in battery level turn it off and pick out the battery for a few minutes. Put it back and connect the charger, now charge the phone turned off for about 5 hours or overnight. Start the phone as normal and check if the battery life time has improved.
You can also let the phone drain the battery completely until it turns itself on and won’t start again.
At this point connect the charger but do not turn on the phone, leave it charging while turned off until the battery indicator on the screen is completely filled.
Also make sure that you’re using a Sony original charger.
Battery enhancement features
Extended standby mode
Use the extended standby mode to make the battery last longer. Your Wi-Fi® connection, data traffic and unused applications are then paused when the phone is in standby. You can still receive phone calls, text and multimedia messages. Once the phone is used again, all paused functions are resumed.
You can enable/disable Extended standby mode via Settings > Power management. (Depending on model)
STAMINA mode
It has already been mentioned a couple of times that Smartphone’s use a lot of power, even when you’re not actively using them. All those app’s that you have on your phone may still be running in the background, draining your battery. STAMINA mode is a further development of Extended standby mode and saves wasted battery drain by recognizing when your display is off and turning off functions you don’t need, while keeping the notifications you want. As soon as you wake up your Android Smartphone, everything is up and running again.
Get only the important notices.
With Battery STAMINA mode, Wi-Fi® and data traffic are disabled during standby, but you still receive incoming calls, texts, and alarms. And since everyone has different needs, you can easily customize which app's you want to receive push notifications from even in standby mode. Facebook notifications on or off? It’s up to you.
The STAMINA mode will constantly re-evaluate your usage and update the expected standby time accordingly.
This standby time will completely vary depending on your own personal usage. You may see that when you first start using your handset, the Standby time will be higher than what is expected after you have used the handset for a few days. This is due to STAMINA mode having no previous usage history to estimate from.
If you have a very high usage level, you may only see a slight improvement between having STAMINA enabled and disabled. STAMINA mode is more effective the more often the display is turned off as this is when the power saving features kick in. If the display is rarely turned off, you may not see much improvement in the battery performance.
You can enable/disable STAMINA standby mode via Settings > Power management. (Depending on model)
- Community Manager Sony Xperia Support Forum
If you're new to our forums make sure that you have read our Discussion guidelines.
If you want to get in touch with the local support team for your country please visit our contact page.

To turn sound off (and on) try holding the lowest right button (#) for a bit longer time. Works with most phones.

How to use the new MacBook 13'' with Built-in 7-hour battery

Hi,
I just bought the new MacBook, it is my first Mac, and having the Built-in 7-hour battery I don't know if I can plug it in most of the times without doing any damage to the battery.
On other portable computers, I just take the battery out and than plug it in and use it, but in this one that can not be done.
So, what to do? Try to always drain and recharge fully, or it is no problem to plug it in when the battery is fully charged?
I read that you should let it sleep(when it goes to sleep because it doesn't have battery)for 5 hours before charging it so it really drains. Is that really necessary?
Also after it goes to sleep and I plug it in to charge, should I let it charge in Sleep Mode, or should I Shut it down and let it charge?
What has been your experience with battery life? The first time I used it, it lasted for 4hours, is this normal and it will get better with 3 or 4 fully charges/draines?
Thank you very much for your help.
Pantuf

Hey guys, I understand your concern that you're not getting 7 hours out of your battery but let me put a couple things into perspective and also offer you some info from Apple's website that may or may not explain why you aren't getting the full 7 hrs.
First mgb545, 5.5 hours is killer for laptop battery, but nonetheless you paid for it for the 7 hour battery so I don't fault you in any way for wanting what they said you would get.
Second, the MacBook is Apple's "sub $1000" notebook. At first mention of that you think, "alright, it's under a thousand bucks!". It is, it's just $999...
My point is that it's an advertising game. The MacBook can get +up to+ 7 hours on a single charge but not everybody is doing the same things or has the same configuration as when Apple was testing their machines. You might have a Time Machine HDD backing up (which I don't recommend nor do I think you guys do since you didn't mention it) or some other USB peripheral that takes power which would lower the battery's life. However, I think there is
This is straight an easier explanation... This next blurb is the "fine print" from Apple's website right on their MacBook page about how they got 7 hrs.
+"Testing conducted by Apple in October 2009 using preproduction 2.26GHz Intel Core 2 Duo-based MacBook units. Battery life depends on configuration and use. See www.apple.com/batteries for more information. The wireless productivity test measures battery life by wirelessly browsing various websites and editing text in a word processing document with display brightness set to 50%."+
That all being said, I think or at least hope you'll find your answer there. For starters, it says "various websites". Who knows if those were basic HTML or Flash heavy sites or a combination of both? The other stipulation of this is brightness. Do you guys have your brightness at 50% or is it higher?
Try this, I know the weekend just passed, but if you find that you have 7 hours where you don't need your laptop, leave it on, make sure it doesn't go to sleep or screen saver, play with it every so often, leave wi-fi on, make sure your brightness is at 50% and then see how long it lasts.
One last thing, when you say you're getting 5.5 hrs out of your battery, how low are you letting it go to? I'm assuming when Apple says "a single charge" they mean it. So if you're getting 5.5hrs when it goes down to 8 or 10% you also need to factor in the extra time you might gain from that.
Hope this help, let me know how your computers are set up, I'm curious to know if this will resolve or at least account for your lack of 7 hrs because me just recently got the 13" MBP and it doesn't get 7hrs either.
-David

Incorrect Battery Time

I recently started having a problem with my battery time display. The battery still lasts about two hours on a full charge, however, the time and percentage displayed are very wrong. As of right now, it says I have 11:39 remaining or 93%. In reality, I probably have about an hour left and about 40-60% remaining. I have tried recalibrating it several times to no avail and I have also tried resetting the power manager. Using coconutBattery, it shows that I have a battery capacity of 23863 mAh (I wish!) when it should be 5400 mAh. Please let me know if anyone has any ideas on how to get the time and percentage reading back to being accurate. Thanks!

I'm assuming that you have an older PowerBook, or possibly an older battery. I have this problem on my PowerBook, but mine will stay on 100% for like an half hour and then drop to 90% and then to 80, so on and so forth. This is a problem with OS X and has been a problem the plauged PowerBooks for years now (even on my Mac Portable, I had problems). So you just got to make notes for yourself and go with it.

Not getting 10 hour battery life.

I remember reading it had to be at half the capacity of the uh, ..screen..light, lol. Am I missing something else? Mine's just a smidge below half, and it only has about a 4 and a half hour battery life. Are there other settings that I need to tone down that I'm not aware of? I bought my MBP this year.

Hi
Can you let me know how did you solve the battery problems. I was happy to have a mac with 8-9 hrs running time when compared to my earlier iBookG4 which gave 4.5 hrs till its late days.
I am having a MBP that is just 1 month old and under use since a week.
i am deeply worried when it shows 3.5 hrs after full charge. deeply disappointed.
Do lend me some helping hand.

4 hour battery life surfing internet?

am i missing something here or is this normal? i was expecting 4 hours when watching movies or doing more processor-heavy tasks.. but im getting around 4 hours, 5 at best, on the internet not at full brightness. this is the 2nd charge and i got it two days ago..
any thoughts?

Using gmail for instance forces the use of the nvidia graphicscard and the change back to intel is only made if you shut down the program, at best. Sometimes the release of the lock to nvidia doesn't work and you have to log out. This misuse of graphics card and together with flash on web pages makes the battery time very short indeed. Software update please Apple.
http://forums.macrumors.com/showthread.php?t=904425
Message was edited by: pepparkaka

T420s - best 8 hours battery setup

Hello Community,
I just bough T420s 4GB RAm, 128SSD to my girlfriend and she is SO happy. The laptop is one sexy beast.
However, I was surprized by the size of the main battery. It is tiny , like a chocolate bar So , I expected a tiny battery life as well. It looks like with WiFi and decent Screen brightness it is about 3+ hours.
Charger is 65 watt and super small and it is not a problem to bring it around. Still, I was thinking what is the best way to extend battery life to 8 hours working day.
My current idea:
Buy 2 additional main batteries and 2 external batery chargers.
Charge these 2 extra batteries every day Get them along with laptop.
So at the end my girl friend will have: Laptop with 1 installed battery and 2 extra batteries.
Assuming one battery gives 3.5 hours of active usage time it brings us to about 10 hours battery life.
Batteries are super small a tiny , so bringing them along in her school bag (she is a student) should not be a problem.
How do you see this setup? May be you have bettter ideas how to achieve 10 hours active usage time with less hassle?

almalino wrote:
thinkfly,
How do you use your laptop? I get between 3 and 4 hours on main 6 cell battery using WiFi and MS office. I barely can imagine adding smaller 3 cell battery and get additinoal 4 hours out of it.
I use WiFi and run 2 virtual machines, for coding and web browsing mainly. I don't do computing jobs on my T420s. Open your Power Manager and check the idle wattage. If your idle power consumption is more than 12 watts then you probably need to optimize your system e.g. check which applications are occupying your CPU.

Personal Best Battery Time

Got my best battery time yesterday. 8:48 use and 1 day 4 hrs standby. I have to admit I wasn't using anything that taxing. No games but several calls, a lot of web and some Youtube. I don't expect to get this every day but I was impressed. I usually get about 4 + hrs. of use.

It all depends what you do. "Usage" is to generic to make accurate comparisons. It all depends on what you do. I can get 12 hours usage and 2 days standby if I only do music. Unfortunately the usage meter doesn't break things down beyond seperating between "calls minutes" and being "on". There is no way to distinguish between 4 hours of data or 4 hours of music except for inferring from the data usage section. Just saying I got 8 hours of battery time doesn't tell the full story.
The iPhone is rated for the following:
Talk time:
Up to 5 hours on 3G
Up to 10 hours on 2G
Standby time: Up to 300 hours
Internet use:
Up to 5 hours on 3G
Up to 6 hours on Wi-Fi
Video playback: Up to 7 hours
Audio playback: Up to 24 hours
Now these times are for individual functions. To get 300 hours of standby, you have to have everything off. To get 7 hours of video, you probably need the screen on its lowest brightness and have the phone in Airplane mode with WiFi and other services off. Same for Audio playback.

Too short battery time

Hi!
First of all, sorry for my bad english!
So, I have a Dell Inspiron laptop (Intel [non sandy] i5, Ati graphics). I used Ubuntu on it with Fluxbox. With it, the battery was discharged after 3 hours. Last week I installed Arch on it with Fluxbox, and the battery is discharged after 1,5 hours.
I've read many pages about it, but I don't know what to do. Can someone tell me, what programs should I install? Laptop Mode Tools, upower, acpi, acpid, pm-utils? Can someone tell me step-by-step what to do? I know the wiki pages, but they're too complicate for me, I'm newbie

Thank You, this application is very useful!
Here are some screenshots about it: https://www.dropbox.com/gallery/1125359 … p?h=b54f44
I have some question.
My battery time is not bad if I use only console, and do nothing. But if I use X, and listen to music, my battery time goes down with 40-50 mins. Can I do something against this?
I see in powertop that mocp uses "Audio codec hw:C0D0: IDT" on 100%. Can I reduce this usage?
And another question. I have acpid installed, and running. I would like to ask it to run my powersave script if I plug out the adapter, and run another if I plug it in. I read that I have to make a script to /etc/acpi/events/ that ask my acpid. But I don't know how
My acpi_listen said the following happens if I plug out the adapter:
ac_adapter ACPI0003:00 00000080 00000000
battery PNP0C0A:00 00000080 00000001
And the following if I plug it in again:
battery PNP0C0A:00 00000080 00000001
ac_adapter ACPI0003:00 00000080 00000001
battery PNP0C0A:00 00000080 00000001
Can somebody tell me what should I insert to my event script?

Low battery time with Arch

Hi,
I'm running Arch on an Asus UX32LN and I've noticed that since my installation of Arch, my battery time has been reduced by 2-3 hours compared to when I was running Windows 8.1. What's the cause of this? Can I diagnose it somehow? I've lowered my screen brightness, I'm not using the graphics card or anything, running just a WM and no extras. This is just me sitting with chromium and a terminal open at most.
Any ideas?

clfarron4 wrote:
Median wrote:I used powertop and noticed that Chromium was draining my battery life quite well, other than that I guess it's the screen brightness. Still feels to me that Windows had better optimization from the start, but I will look into how I can optimize even more, if none has any tips.
Are you using BumbleBee to manage the nVidia card? Or have you disabled one of the cards from the BIOS/UEFI settings?
No.

Macbook's 7 Hour Battery not working

My macbook pro is only a few days old and never lasts longer than 3 hours. I thought this was supposed to have a 7 hour battery? I have the backlights on the keys off as well. Why isn't holding a 7 hour charge?
Thanks a lot.

Apple should really address this a bit more to avoid confusion and panic (me included in panic). I had the same question... Anandtech says he got 6 hrs from his new macbook, and I never seem to get over 3 hours!! Anyways what I ended up doing was a bit of research on Apples Website, and they suggest recalibrating the battery first time around.
http://support.apple.com/kb/HT1490
I had gone through 3 charge cycles and with a 3 hr battery life all three times, I let the machine run all the way down into sleep, left it overnight in sleep mode and then charged it to full. As I am typing on the machine now... since past 30 mins battery life has gone down only 5% and for the FIRST time....as opposed to it being at 85% by now, and it shows 7 hrs remaining as opposed to 2 or 3 Woo hoo! ... I am going to let this run till the battery is depleted and post how long I got from the battery.
Do the calibration.... its just the battery breaking in!!
BTW I am testing with: 70% brightness, all widgets on, Safari and Mail open, iTunes playing mp3's at 30% volume, keyboard backlight on bluetooth off, push notifications on, Wireless 5Ghz on.
Message was edited by: toxicpenguin

Please Post Your Battery Times

i'm thinking of getting an iphone but would like to know more or less what the battery time is...
thanks
PowerMac G5 Dual 2Ghz 2Gig Ram Logic Pro 7.2 Mac OS X (10.4.6) MOTU 828 with ADA800, M-Audio Ozone and a load of gear.

I had 105 GB of data on my Pro 15” obviously this was not going to fit. The migration assistant didn’t give me any choices, it showed my home directory, applications, and a few other things. I selected the applications as that was the most important to transfer over among a few other things. It was about 12 GB in total that were going to be transferred from the Pro to the Air. It took 7 hours. When I came back I was suprised that my documents folder was empty. It had all the file folders, but no data in them. So first I tried to do it wirelessly, but it said 13 hrs for 6.6 GB - I wasn’t going to wait that long. So I burned DVDs. I also noticed that VM Fusion didn’t have the XP Pro disk on it. It was blank, so I decided to put on a fresh copy. After multiple crashes, I wiped VMware off, and put it back and reinstalled XP on a 5 GB partition. <sigh>. I wasn’t impressed with the migration assistant. I have a .mac account and since these saved most of my settings, I could have done without the assistant. In my opinion there should be more options. Knowing that people would have a small hard drive then their used to, more options on what to be transferred should have been given. Also, I’m using an Airport Extreme and I’m using 802n - it is the fastest possible. When I copy 40 GB of data from my Pro to my Mini it takes about 4 hours. I have no idea why the migration assistant took this long to pass my data through my wifi connection. This should be looked at, and more options have to be done.

1 week old macbook pro with 2.5 hrs battery time

I love this product but battery life is driving me insane.
I updated my old macbook pro to the new unibody. I transfered my pre system using time machine. I just realized that when fully charged my new computer has 2.5 hrs of battery time. This is also with better battery life selected under sys. preferences. this cant be normal right?
should I reinstall SL? you think my old macbook pro transfered some unwanted system bits?
thanks in advance

take it in to the apple store, i'm 100% sure they will replace it free of charge, just got mine replaced today, it was 6 months old holding about 3.5 hours of charge

Battery timer skipping 17 ways to christmas.

so i just got my macbook pro a few days ago and i'm curious about the battery timer. it's jumping all over the friggin place. it'll say i have 8 hours left, then it drops down to 6. then, it jumps back up to 7, now it's down at 5 hrs 26 minutes . i'm going through in the calibration process, i just finished the AC plugged in "2 hour resting period" step and next is to let it drain all the way, rest, and charge it again according to what it says here on the apple site =\
will calibration fix this? it's kind of a pain. i realize that i'm using the computer, but i'm hardly doing much. i just have this webpage open, nothing else.
sorry if this is a noobish question, i just wanted to know if i should snap into panic mode or not :B

The estimated time remaining is just that, an estimate. It's based on whatever the computer is doing at any given moment, and it will vary as what the computer is doing changes. The computer is always doing some things that aren't apparent to the user, and one of those things when the computer is brand new is the Spotlight application indexing your hard drive — a processor- and disk-intensive operation. In addition, it always takes the machine a while to refine its estimates, and it also helps to have the battery properly calibrated. Because none of those things has been completed in your case, the estimates are currently useless. In fact they are pretty useless all the time, because if you start doing something more demanding, the six hours you were expecting to have five minutes ago will suddenly only be four hours, and if you stop doing whatever it is after an hour and a half, the estimate may change from 2.5 hours remaining back to four. So what I recommend to everyone who will listen is to switch from the time display to the percentage display in the menu bar. That at least is an actual measurement instead of a guesswork projection.

10 hours battery time?

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