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Thread: Bad Battery?

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    5 Star Lounger
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    Bad Battery?

    Got an Acer netbook, just short of two years old, with a strange problem. The battery will not charge past 52%. I thought it might be a bad AC adapter, so I tried another one, and the same thing happened. Can there be some kind of defect in the battery that would cause this? Never seen anything like it before.

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    5 Star Lounger
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    Depends on how laptop used. If connected to mains continuously this can effect the charging capacity of the battery. On some systems there is a battery optimiser that can discharge battery fully and reset the charge that may recover the battery condition (will need to look in your laptop options for it).
    Other than that maybe investment in a new battery is needed.

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    Plutonium Lounger Medico's Avatar
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    My 2 year old Sony needed a new battery and I found a new off brand on eBay for a very reasonable price ($47 including shipping). The only thing you have to be aware of is many of the off brand batteries require a new bios update (included with the batteries) to allow the batteries to work. Very nice! Take a look. Just do a search for your battery model.
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    It may also be the charging circuit on the mobo, but it's most likely the battery. Can you borrow a test battery?

    cheers, Paul

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    Super Moderator CLiNT's Avatar
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    It looks like an issue with the battery. It could also be an issue of a BIOS needing an update too.
    But it will also depend heavily upon how the device has been used in the past and any potentially reported manufacturer specific issues.


    Having a mobile device with a state of the art lithium ion battery constantly connected to the main power will have a negative effect on your battery recharging capability over time. Battery lifespans will be in the 3-4 year range under normal operating usage. Extreme temperatures will have a negative effect on overal performance and lifespan too.
    Once a bat has been charged to 100% it should be alowed to run to near drainage capacity before engaging in a recharge cycle.
    Engaging a recharge cycle from a zero charge state is always a bad idea and will adversly affect it's lifespan and recharging capabilities over time. [A major don't do]

    If you find yourself wanting or needing to always have a laptop plugged in, remove the bat and store it while it is at maximum capacity. The battery should be taken out of storage and recharged before the capacity reaches zero charge. It can then be removed for storage once again. The bat should be stored at room temperature or within it's designed thermal operating temperatures.

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