How to recharge battery?

Retire Engineer,
Follow up to thread --- "battery acting up?"
Can I use the computer while simultaneously charging the battery, or is it better to power off the computer when charging it?

You can use the computer while charging the battery. It will take longer than it would if the computer was off but otherwise it's not a problem.

Similar Messages

  • How often recharge battery

    How often should battery be recharged for best use

    You are advised to go through at least one charge cycle per month (charging to 100% then running it completely down) : http://www.apple.com/batteries/ipad.html
    Personally I usually run mine down so that it powers off - otherwise I just top it up if I need the extra run-time (e.g. prior to travelling).

  • How to recharge battery on I book G4

    Was recently given an old I Book G4. No idea if it works yet. I took the battery out and I want to charge it. Do I need a special charger and can I get one? This laptop hasn't been used in a long time.

    The battery is probably dead and may not charge. You can get a charger at a good price through Amazon. The ones that are listed for the iBook G4 and PowerBook G4 are the correct ones.
    http://www.amazon.com/s/?ie=UTF8&keywords=mac+ibook+g4+charger&tag=googhydr-20&i ndex=aps&hvadid=2985087085&hvpos=1t1&hvexid=&hvnetw=g&hvrand=2638267599107296394 &hvpone=&hvptwo=&hvqmt=b&hvdev=c&ref=pd_sl_32ggkr9kep_b

  • T410 - how to recharge backup battery after - ERROR 0251 System CMOS checksum bad

    Hey people
    I would like to know how to recharge the backup battery ( internal one, keeping clock and date etc. )
    i got the
    Error 0251 System CMOS checksum bad— Default configuration used.
    message and after looking at the T400 manual they write what to do:
    Charge the backup battery for more than 8 hours by connecting the ac adapter.
    ok sounds good, but i cant figure out how to properly charge it,
    do i need to put the normal battery pack out and then attach it to the AC adapter, or not?
    Does the laptop need to be running or will it be charged also turned off?
    i would really appreciate if u could help me out and tell me the proper way to recharge!!
    thanks already,
    cheers,
    Andi

    Hello and welcome,
    I didn't know that the backup battery was rechargeable.  I don't think it is.  You might be better off to just replace it.
    The  Hardware Maintenance Manual page 80 shows how to access it.  According to the System Service Parts T410, the FRU number is 02K7078.  They should be easy to find and inexpensive.
    Z.
    The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.  The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
    English Community   Deutsche Community   Comunidad en Español   Русскоязычное Сообщество

  • How to calibration battery correctly

    HI,
    May I know how to calibration battery correctly for apple devices ?
    Actually need very month calibration one time for totally device discharged 100%-0% and then charged 0%-100% then using as normal ?
    Or need to discharged 2 times and then fully charged 2 times back ?

    There is no such thing as calibration of a Lithium-Ion battery as there used to be with NiCad batteries.  The only thing that can be calibrated is the charge reporting circuitry.  Repeated discharge to shutdown is actually damaging to the battery, and independent studies show that discharge to 50% and then charge will result in three to four times the battery life vs full discharge.  You are far better off following a frequent recharge procedure than discharging to shutdown as a regular thing.

  • Ipod HI-FI on rechargable battery

    Hello all,
    i just get an HI-Fi and i bought 6 D cell ( 2500mha) from energizer. it seems the Ipod Hi fi dry them in less than one hour?
    i guess something is wrong...
    i use Ipod fully charged before plugin it in the HI-FI, may be the backlight during play is energie consuming...but anyway insould be able to listen more than one hour. i listen to low volume too...so anyone running hi-fi on rechargable battery. i 'd like to know how long to they last,
    thanx,

    iPod HiFi does not appear to be designed specifically to operate from rechargeable batteries. Since they would provide 7.2 volts rather than the 9 volts the iPod HiFi expects, it would see them as partly depleted in any case.
    However the main problem is that a D cell rechargeable of 2500mAh is not a proper capacity D cell. It is an AA rechargeable in a D cell casing. For example, an alkaline D cell provides at least 12,000 mAh. This explains your one hour battery life. Try finding some genuine D cell rechargeable with at least 8000 mAh capacity.

  • How to preserve battery life ~ used to last all day, now it runs out by lunchtime

    How to preserve battery life ~ used to last all day, now it runs out by lunchtime

    I would advise updating to iOS 7. It might improve your battery and the bugs are worked out by now.
    If not wanting to update because of the new look, here are some tips:
    -Turn off bluetooth when not needed.
    -Connect to wifi and turn off cellular data when possible.
    -When not around wifi, turn wifi off.
    -Keep your screen at around 50% brightness.
    -Disbale certain apps or features in Settings<Privacy<Location Services if they are not necessary.
    -Close out of apps in the multitasking bar.
    -Enable airplane mode when you plan on not using your phone for a while.
    Hopefully these tips help you. If your battery does eventually get too bad, you can get it changed out by apple. If youve had your device for under a year, you can take it into an Apple store and theyll give you a new phone in return. Have a good night and good luck!

  • Help! Phone keeps restarting. Cannot shut down. Don't know how to access battery.

    help!!! my phone just went nuts & I can't even turn it off! The start screen just keeps going on & on & on. I went through all the FAQS & can't even figure out how to remove battery. I am recently widowed & am electronically challenged on a good day. I'm in tears tonight. If anyone can help...

    Tracy, it sounds to me like you'd be happier with a basic phone. Do not pay for an expensive smartphone and monthly data plan when all you want is something to make calls. You have 14 days to return it, and do not let the rep talk you into another smartphone if that is not what you want.
    You can buy a basic phone here, on amazon.com, on eBay, etc. I have seen the original RAZRs (the nonsmartphones) sold new on eBay. If you buy there, make sure it's Verizon branded, not prepay only, and it has a clean electronic serial number (ESN) that you check with Verizon before you pay for the phone.
    Another idea: You can buy a new LG Cosmos 2, a messaging phone, off-contract for $150 on Amazon, or get it through Verizon on a two-year contract.
    Good luck and please post back if you have any other questions.

  • How to checks battery life

    How to checks battery life

    If you can, visit an Apple Store or Authorized Apple Service Provider to get your battery checked, or contact Apple Support:
    How do I arrange iPhone Battery Replacement Service?
    Battery Replacement Service may be arranged through your carrier (except AT&T and Virgin Mobile) or Apple. Please do not send any accessories with your iPhone.
    iPhone - Contact Support - Apple Support

  • How to replace battery in 15" macbook pro?

    How to replace battery in 15" MacBook Pro? how to charge new battery.

    See these articles:
    About Batteries in Modern Apple Laptops
    Battery University
    Apple - Batteries - Notebooks
    Apple - Batteries
    Extending the Life of Your Laptop Battery
    MacBook and MacBook Pro- Mac reduces processor speed when battery is removed while operating from an A-C adaptor
    Apple Portables- Calibrating your computer's battery for best performance
    Mac notebooks- Determining battery cycle count

  • If i connect with led to recharge battery there is any problem in the iphone 5

    if i connect with led to recharge battery there is any problem in the iphone 5

    No idea what you mean by "connect with led".

  • How long the battery can play in 30G?

    Did someone count how long the battery can play?
    my 30GB can play around 11-12 hours.. but not very accurate.
    Any method to count the playing time?
    thk!

    "Any method to count the playing time"
    Everybody's battery playback time will be different depending on you use the iPod. Here's the Apple test.
    How to accurately determine your iPod battery life.

  • How to fix battery drain in iphone 4s

    I have recently brought an iphone 4s and the battery is draining even without much use. please advice if any one is able to fix it with some patches or updates  iOS 5.0.1

    sajith5 wrote:
    I have recently brought an iphone 4s and the battery is draining even without much use. please advice if any one is able to fix it with some patches or updates  iOS 5.0.1
    I have personally seen the problem and corrected it on numerous models now including the 4S, 4, 3GS and iPad 2s.  Corrupt system level settings created by an iOS 5 bug in the original release that caused battery recalibration issues, etc.  Just installing the update does not fix the issue in most cases (sometime it initially can be worse).  You need to clear out those settings and recalibate the battery.  For those still having the "standby battery drain" issue follow the procedure below in order.  It does fix the problem in most cases.
    Go through these steps to address the battery after updating to iOS 5.0.1:
    1. Reset all settings (settings app-> general-> reset)
    2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). At this point, Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)
    3. Turn off system location services timezone and iAd
    4. Fully discharge battery  (till it shuts off with the spinning wheel)
    5. Fully recharge battery (overnight if possible)
    In my experience this improves the standby battery drain issue significantly in most cases.  It reduces drain from 2-4% or more per hr to 0.5% or less. It has worked for many, many users now... not all, but most. If it does not work after a few try's you may have a real battery or hardware issue and should contact Apple.  Good Luck!
    More details on my thread here if needed:https://discussions.apple.com/thread/3484755

  • How long does battery last...not charge time

    How long does the battery in an iPhone 4 last before it will need to be replaced?

    OK, here it goes........
    Mac Medic (
    How long does battery last on 6gen iPod Nano if you just display the clock and don't listen to music? I want to use it as a wrist watch. How long does it last just in Sleep Mode and how long if you leave the display on all the time?  
    17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 
    Why not just purchase a "watch?"

  • How To Fix Battery Connector?

    i need help, phone wont turn on but only when i plug it up to the chager

    sajith5 wrote:
    I have recently brought an iphone 4s and the battery is draining even without much use. please advice if any one is able to fix it with some patches or updates  iOS 5.0.1
    I have personally seen the problem and corrected it on numerous models now including the 4S, 4, 3GS and iPad 2s.  Corrupt system level settings created by an iOS 5 bug in the original release that caused battery recalibration issues, etc.  Just installing the update does not fix the issue in most cases (sometime it initially can be worse).  You need to clear out those settings and recalibate the battery.  For those still having the "standby battery drain" issue follow the procedure below in order.  It does fix the problem in most cases.
    Go through these steps to address the battery after updating to iOS 5.0.1:
    1. Reset all settings (settings app-> general-> reset)
    2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). At this point, Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)
    3. Turn off system location services timezone and iAd
    4. Fully discharge battery  (till it shuts off with the spinning wheel)
    5. Fully recharge battery (overnight if possible)
    In my experience this improves the standby battery drain issue significantly in most cases.  It reduces drain from 2-4% or more per hr to 0.5% or less. It has worked for many, many users now... not all, but most. If it does not work after a few try's you may have a real battery or hardware issue and should contact Apple.  Good Luck!
    More details on my thread here if needed:https://discussions.apple.com/thread/3484755

Maybe you are looking for