How to maintain high battery power?

For MacBook Pro, the battery was built-in with system, unlike other ordinary notebook where they are detachable. Please suggest which below is the proper way to use with charger and battery so as to maintain high power battery life.
1. Whenever AC power is available, always connect charger with AC power supply, no matter whether the battery has been charged or not.
2. Connect charger only whenever battery power has been used up. Whenever battery has been charged, detach the charger so as to allow battery power to be used up again. The procedure will be iterated.
I suggested the Apple web page about battery, however I cannot interpret what the answer should be for my above question.
I look forward to a procedure so as to decrease the battery life depreciation. Perhaps you would noted that, for ordinary notebook, if their battery was continuously charged, no matter it has been charged fully or not, the battery life will be depreciated, where the maximum power would be lower and lower gradually even when it was fully charged. Therefore, in the old day, I would normally detach the battery and directly connect power supply so as to avoid battery power depreciation.
Please comment.

HI,
Open System Preferences/Energy Saver. Where you see Settings for, click that pop up menu and select Battery. Now click the Optimization button and select Better Battery Life.
*"Whenever AC power is available, always connect charger with AC power supply, no matter whether the battery has been charged or not"*
Yes.
*"Connect charger only whenever battery power has been used up. Whenever battery has been charged, detach the charger so as to allow battery power to be used up again. The procedure will be iterated"*
No. Connect to AC power whenever you can.
Apple Portables: Tips for maximizing your battery charge
Carolyn

Similar Messages

  • How do I conserve battery power. Think I need to delete recently used icons but don't know hpw

    How do I conserve battery power by deleting recently used icons but don't know how

    The recently used icons represent exactly that - apps you have used recently. The icons on the list do NOT mean that the apps are still running. The only apps that continue to run, and might be profitably quit from this list are those which are still playing the music you will be listening to, or GPS apps.

  • How to maintain high resolution of exported images

    I am working with iphoto 5.0.4. When trying to export (share>export) an image as a 'Full Size' image (3264 x 2448 4.5 MB) to the desktop it appears at that size with 300 dpi resolution. However if I export the same file as 'Scale image as no larger than:' the resolution remains 300 dpi but the size is reduced to 2.4 MB while the dimensions remain the same. And finally if any cropping is performed or if I resize the dimensions of the image, the exported image will reflect the altered size but also the dpi is reduced to 72. What gives? Does that mean that the printed version will only print at 72 dpi? How can I create a smaller size image and still maintain 300 dpi resolution? I thank you in advance for your help.
    iMac   Mac OS X (10.4.5)   iphoto 5.0

    My first thought would be to remove the "Scale all objects ... " vi property.  I have been using LabVIEW for 10+ years, and I always found that function to work very poorly.  I never use it.  At least you could try removing that setting and see if your problem goes away.

  • How to maintain high image quality of still images

    Hello,
    I have been creating flipbooks out of still images shot on a canon MK II. They are 8 mp files and look great blown up large in photoshop, however, once imported into iMovie through iPhoto and played as a sequence in rapid succession they seem to lose quality. They appear slightly compressed or otherwise a little pixelated. A get info on an individual frame says it is is less than 200 KB when the original file is 3 mb. Is there a setting I am missing or other technique for maintaining the images' high quality after being brought into this rapid slideshow? Should I be using final cut to achieve this type of high quality?
    thanks!

    The following works well. Save your images in photoshop as TIFF files, with a resolution of 1920 x 1080, 72 pixels per. Save to the desktop. Drag into imovie. Make sure your imovie is hd 1080i. Use the Ken Burns to expand the picture to fill the black spaces, if you so desire.
    At that point, you'll have a super high def show.
    Hope this helps.

  • How to save battery power

    How can I save battery power on my iPhone5. When I go to work I keep my phone in a drawer at that time it seems to lose power very fast. Any other time the power is fine.

    http://www.apple.com/batteries/iphone.html
    If cellular reception is minimized when placed on a drawer, more battery will be used trying to maintain cellular reception with or without making any calls. If not being used during that time, enable Airplane mode on the iPhone before being placed in the drawer.

  • How do i clear my iphone of apps i am not using to save battery power?

    How do i save battery power buy clearing or turning off some apps that i do not use?

    Go to settings > general> usage> and you can delete apps from a list of installed apps. Plus you can read all the stats on data usage and such.

  • How to maintain Data availability in Oracle 10g RAC when LOADING the data?

    Hi
    we are having Oracle 10g server on Sun Solaris(64 bit) with 8 GB RAM.
    We are in need of moving the database to "Oracle 10g RAC". (Real Application Clusters)
    Our doubt is when loading the data into RAC server, will it affect the application?
    coz' we heared that RAC server should be down when we load the data.
    Is this correct?
    If yes, then How to maintain High data availability when we load the data in RAC server?? Please help me.
    Thanks.

    First, is this the same question that a colleague of yours posted in this thread?
    Data Load in RAC
    Second, are other sessions querying the table that you're loading data into? If so, how are you loading the data?
    Justin
    Distributed Database Consulting, Inc.
    http://www.ddbcinc.com/askDDBC

  • W520: How to get full speed and turbo on battery power

    Here is how you get around the on battery max frequency limitation (of 1.2 GHz, at least for my i7-2620M) and no turbo (well, almost, read on):
    0. Assuming you have max performance enabled everywhere possible (BIOS/PowerManager/Windows Power Scheme)
    1. Load ThrottleStop.
    2. Set the multiplier manually to your maximum multiplier (e.g., 27x for i7-2620M, 23x for i7-2820QM, etc...) or Turbo (which is the setting after your max multiplier).
    3a. Enable ThrottleStop
    3b. (optional) Check in CPU-Z and make sure that your highest multiplier is being used when the CPU is utilized. If you selected Turbo, you should have turbo enabled at this point.
    4. Disable ThrottleStop
    5. Exit ThrottleStop, so that it doesn't waste any battery power, since it is no longer needed
    This will change the max frequency (and max multiplier) available from whatever Lenovo decided to arbitrarily fix it at (e.g., 1.2GHz) to the correct max frequency (which in my case is 2.7 GHz / 3.2 GHz for turbo). Now your laptop will be able to correctly go from 800MHz to whatever is the max frequency of your CPU, using both EIST and C1E. Turbo will also kick in, if you enabled it in ThrottleStop and the Lenovo PowerManager app will even show it as enabled.
    Thanks Unclewebb for letting us get around this stupid max CPU frequency limitation that Lenovo has imposed on us.
    Disclaimer:
    Do this at your own risk, since Lenovo does not officially support it.
    Turn on active cooling, if you do CPU intensive stuff for any prolonged period of time. This will take away some on battery time, but if battery time is of ultimate concern to you, then this change is probably not for you to begin with.
    If you go through prolonged periods of CPU intensive activity, you will lower your battery life and produce a lot of battery heat, because you will have a relatively high discharge rate. A high discharge rate reduces both the number of charge cycles and the maximum charge capacity of a Li-Ion battery. I don't know how safe all of this is, so do this at your own risk and probably monitor temperatures along the way. Other laptops can do Turbo and full speed on battery power (e.g., the slim 3 lb Sony Z, with the i7-2620M), but then other laptops have different designs and cooling systems, so who knows how the Lenovo W520 hardware will react to this.

    Hi,
    I have the opposite problem - my i7-2720QM is fixed at 2.2GHz no matter how hard I spank 1, 2 or all cores, and no matter what System Performance settings I apply.  It even runs at this speed, and gives the same bench marks when on battery  with the "system performance" set to Low.    
    No one even knows what the various System Performance settings actuall mean. E.g. Neither Lenvo support nor these forums could tell me what the difference between "Maximum Turbo","Turbo" or even "Low" under "System Performance" in the Lenovo power manager Advanced settings.
    I have been trying go get turbo boost to work for 2 months. I have wasted so much time with this machine, I could have bought 2 Macbook pros for the cost of the time lost.
    I dont know why Lenovo have disabled the turbo boost (and the opposite, turbo drop?)  feature for this CPU - is it deliberate, or incompetence?  Its certainly false marketing and extremely annoying that I have to use my ancient PC to do single threaded type work which I know the Laptop can manage if it were not crippled.
    So people whos clock speed drops when on battery are the lucky ones.  Mone doesnt even if I want it to.

  • How to maintain battery life of portege z930

    Hi!
    I am an university student using this toshiba ultrabook as my primary PC. Therefore, my laptop can be switched on up to 8 hours a day and even more sometimes. I would like to know how i should maintain the battery because it is internal battery and cannot be removed or changed. (or can it actually be changed?) 
    Should i unplug the power after it is charged full? or should i leave it plugged? (so that it runs on electricity instead of battery? I'm not sure so i'm asking for advice) 
    When should I charge my battery? Say below 20% or when it hits near 0? 
    Your help will be greatly appreciated! Thank you!!

    julianaaagoh wrote:
    Hi!
    I would like to know how i should maintain the battery because it is internal battery and cannot be removed or changed. (or can it actually be changed?) 
    I don’t know anything about Toshiba Portege PC.  When you refer to “internal battery” do you mean an internal built in battery or a removable Li-ion battery pack that powers the laptop?  (At any rate, the spec states that battery is a Li-ion 8-cell battery.)  Unlike Ni-Cad, Li-ion does not have a memory therefore timing the recharging is not significant factor.  But if you are trying to extend the life of the battery before replacement, there are ways that help to prolong the life cycle.
    http://batteryuniversity.com/learn/article/do_and_​dont_battery_table

  • How to maintain battery life of z930

    Hi!
    I am an university student using this toshiba ultrabook as my primary PC. Therefore, my laptop can be switched on up to 8 hours a day and even more sometimes. I would like to know how i should maintain the battery because it is internal battery and cannot be removed or changed. (or can it actually be changed?) 
    Should i unplug the power after it is charged full? or should i leave it plugged? (so that it runs on electricity instead of battery? I'm not sure so i'm asking for advice) 
    When should I charge my battery? Say below 20% or when it hits near 0? 
    Your help will be greatly appreciated! Thank you!!

    See my answer HERE.  Please don't post the same question twice.
    C.B.
    C.B.
    Toshiba Sat. C75D-B7260 Win 8.1 64 Bit--Toshiba Sat. L775D-S7132 Win 7 HP SP1 64 Bit and Win 10 PRO Technical Preview--Toshiba Sat. L305-S5921 Win Vista SP2 32 Bit

  • How can i use an external screen on mountain lion when i'm running on battery power?

    Hey all:
    I just upgraded from snow leopard to Mountain Lion, and i use external screen, keyboard and mouse all the time....
    On Mountain Lion it's perfect when the power adaptor is connected as soon as you close the LID your external screen becomes the primary screeen and it's fully functional desktop (no mirroring or extension screen)
    But the problem is when i'm in battery power, in snow leopard i used to close my lid my mac goes to sleep then i wake it up using the mouse and immediately open the LID so it doesn't go to sleep again and now i'm running on battery power with a primary external screen.
    Any idea how to use an external screen on mountain lion while i'm on battery power? (i know i can use mirroring but i want just 1 primary screen and the laptop screen would be turned off )
    Thanks for the help.....
    Sherif

    Sherif Daniel wrote:
    my question is how to use an external display with mountain lion when i'm running on the laptop battery not connecting the ac adaptor?
    Thanks again
    You can't with the lid closed, that's one of the rules for clamshell mode.
    http://support.apple.com/kb/ht3131

  • Before I upgraded my iPad mini, you could turn off apps to save battery power by double clicking the control button and then holding your finger on the app button until the minus sign appeared.  That doesn't work anymore.  How do you turn off the apps wit

    Before I upgraded my iPad mini, you could turn off apps to save battery power by double clicking the control button and then holding your finger on the app button until the minus sign appeared.  That doesn't work anymore.  How do you turn off the apps with ios7

    Now you swipe downward, the app will appear and you delete, keep scolling to the right as in the past.  With the new operating system you also swipe downward to get the search bar to find an app

  • Will an iPhone automatically turn off location services.  If it goes below a certain battery power level, and so how you disable this in settings.

    I am working with Georgia DOT and we have created an app to track our state vehicles using IPhone 5. My question is: will an iPhone automatically turn off location services?  If it goes below a certain battery power level, and if so how do you disable this in settings.
    Message was edited by: mickyel

    I don't believe that this will happen, however, the entire iPhone will shut down when the iPhone reaches the auto-shutdown power level. There is no way to turn that Off other that connecting the iPhone to power.

  • How to keep icons from piling up on the dashboard.  I understand they soak up battery power.

    How do I keep icons from appearing on the iPad dashboard when moving around the Internet?  I understand they use up battery power.

    When you close them from the task bar, you are not deleting the app, just closing it down. Most of them are not using any power at all, just are there because you recently used them, but some do use power, or keep some memory.  It is a good idea to double click and shut them down at least daily, if not more often.

  • MacBook shuts down on battery power at high cpu usage

    I have a black MacBook core 2 duo (MacBook 2,1) that has always worked perfectly, but about 2 weeks ago it started to shut down without any notification.
    When I am doing CPU intensive tasks I can hear a click and immediately after the computer turns off. This happens with different applications and even running Windows trough Boot Camp.
    My first thought was that the computer shuts down itself to prevent overheating but since I only get the problem when running on battery power I rejected that theory.
    In the other side my battery is working well, because it has only 183 charge cycles and the full capacity is 4169 mAh, meaning 82% of the capacity of a new one. With airport and bluetooth turned off and low brightness on the screen I can still read PDFs for more than 5 hours.
    Another suspicious behavior is that last week, several minutes before the computer shut down, it couldn’t make any sound. I rebooted it and sound started working again. Maybe this is an independent problem but since they started together it can be related to the high CPU shut down one.
    Has anybody seen this kind of behavior? Any idea about what is producing the problem?
    Thanks in advance

    yes it is the 5.1
    Battery Information:
      Model Information:
      Serial Number:          DP-bq20z951-3981-3c62
      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):          1761
      Fully charged:          No
      Charging:          Yes
      Full charge capacity (mAh):          2110
      Health Information:
      Cycle count:          135
      Condition:          Check Battery
      Battery Installed:          Yes
      Amperage (mA):          -578
      Voltage (mV):          12033

Maybe you are looking for