IBook batterie charge life about 1 hour

I have my iBook for 20 months and now the charge life of the battery is about an hour. Also the time to charge it is about an hour. I drained and full charged it. I tried to reset PMU but when I release the keys Shift-Control-Option-Power, the computer restarts automaticaly, then I can't wait the 5 seconds required and the time of the system is not reset to 00.00.00, 1970 January, the 1st. My setting of Energy Saver is Longest Battery Life. My screen brightness is low level and I have turned off the unused applications, features and technologies. I disconnect peripherals not in use and eject CDs and DVDs if not accessed. Should I use Battery Update or should I do anything else?
Thank you so much for looking at my questions.

Letting your battery drain completely and then recharging it completely will keep it "calibrated" so the Mac knows how much charge there is. Doing this one a month should allow your iBook to accurately display how much charge is in the battery.
Lithium-ion batteries have a limited shelf life, whether they're used or not. In general, they will last around two years even if you don't use it.
Of course, batteries are designed to charge and discharge and then charge again. However, each battery has a limited number of complete charges before performance starts to degrade. You may have used up the total number of charge cycles before your battery reached its shelf life. So, it's possible it could have lasted longer if you hadn't discharged and recharged it every day.
Apple has a couple of Web pages with some suggestions and examples:
http://www.apple.com/batteries/
http://www.apple.com/batteries/notebooks.html
With your new battery, don't discharge it completely unless you're actually using it when you're not near power. But, you should continue to discharge it completely at least once a month so your iBook knows where the top and bottom charge are.
-Doug

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    Hardware Information:
              MacBook Air (13-inch, Mid 2012)
              MacBook Air - model: MacBookAir5,2
              1 1.8 GHz Intel Core i5 CPU: 2 cores
              4 GB RAM
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    Ouch,  #2 and #3 are the 600 pound Gorilla that "sat" on your battery 
    Contact Apple for appt. for free in shop diagnostics and obvious battery replacement
    future battery considerations:
    Gaming: In cases of heavy and frequent use in gaming it is recommended, if possible, to keep your Mac plugged in since these frequent fast and deep discharges of the battery are not ideal for battery longevity.
    If you were to always keep your macbook battery floating between 20% and 80% charge roughly, then you’d have no other considerations to make about your battery and its care,… except for long-term storage.
    Keep it plugged in when near a socket so you keep the charging cycles down on your LiPo (lithium polymer) cells / battery, but not plugged in all the time. When not being used for several hours, turn it off.
    http://www.apple.com/batteries/notebooks.html
    "Apple does not recommend leaving your portable plugged in all the time."
    General rule to remember of Lithium batteries is:
    Never drain them LOW  & dont always/often store them HIGH
    While cycle count is commonly seen to be the “miles” on your Lithium Ion pack cell in your Macbook, which they are, this distinction is not a fine line at all, and it is a big misconception to “count charge cycles”
    *A person who has, for example, 300 charge cycles on their battery and is recharging at say 50-60% remaining of a 100% charge has better battery usage and care than another person who has 300 charge cycles at say 15% remaining on a 100% charge. 
    DoD (depth of discharge) is far more important on the wear and tear on your Macbook battery than any mere charge cycle count.  *There is no set “mile” or wear from a charge cycle in general OR in specific.    As such, contrary to popular conception, counting cycles is not conclusive whatsoever, rather the amount of deep DoD on an averaged scale of its use and charging conditions.
                              (as a very rough analogy would be 20,000 hard miles put on a car vs. 80,000 good miles being something similar)
    *Contrary to some myths out there, there is protection circuitry in your Macbook and therefore you cannot overcharge it when plugged in and already fully charged
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    Keeping batteries connected to a charger ensures that periodic "top-ups" do very minor but continuous damage to individual cells, hence Apples recommendation above:   “Apple does not recommend leaving your portable plugged in all the time”, …this is because “Li-ion degrades fastest at high state-of-charge”.
                        This is also the same reason new Apple notebooks are packaged with 50% charges and not 100%.
    LiPo (lithium polymer, same as in your Macbook) batteries do not need conditioning. However...
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    Never let your Macbook go into shutdown and safe mode from loss of power, you can corrupt files that way, and the batteries do not like it.
    The only quantified abuse seen to Lithium cells are instances when often the cells are repeatedly drained very low…. key word being "often"
    Contrary to what some might say, Lithium batteries have an "ideal" break in period. First ten cycles or so, don't discharge down past 40% of the battery's capacity. Same way you don’t take a new car out and speed and rev the engine hard first 100 or so miles.
    Proper treatment is still important. Just because LiPo batteries don’t need conditioning in general, does NOT mean they dont have an ideal use / recharge environment. Anything can be abused even if it doesn’t need conditioning.
    From Apple on batteries:
    http://support.apple.com/kb/HT1446
    http://www.apple.com/batteries/
    Storing your MacBook
    If you are going to store your MacBook away for an extended period of time, keep it in a cool location (room temperature roughly 22° C or about 72° F). Make certain you have at least a 50% charge on the internal battery of your Macbook if you plan on storing it away for a few months; recharge your battery to 50% or so every six months roughly if being stored away. If you live in a humid environment, keep your Macbook stored in its zippered case to prevent infiltration of humidity on the internals of your Macbook which could lead to corrosion.
    Considerations:
    Your battery is subject to chemical aging even if not in use. A Lithium battery is aging as soon as its made, regardless.
    In a perfect (although impractical) situation, your lithium battery is best idealized swinging back and forth between 20 and 85% SOC (state of charge) roughly.
    Further still how you discharge the battery is far more important than how it is either charged or stored short term, and more important long term that cycle counts.
    Ultimately counting charge cycles is of little importance.  Abuse in discharging (foremost), charging, and storing the battery and how it affects battery chemistry is important and not the ‘odometer’ reading, or cycle counts on the battery. 
    Everything boils down to battery chemistry long term, and not an arbitrary number, or cycle count.
    Keep your macbook plugged in when near a socket since in the near end of long-term life, this is beneficial to the battery.
    Peace

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    Not Charge
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    Try repairing ur phone..
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