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Thread: T100 plugged in, says it's charging, but losing power

  1. #1
    Soundwave
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    T100 plugged in, says it's charging, but losing power

    Hi. I've had my T100 for about 10 months and never had battery problems.

    Most of the time, nearly 100% of the time, the unit is plugged into the wall. It stays between 90 and 100% charged and if it gets below 95 is usually starts to charge back up.

    Today, the available charge is in the high 70's, says it's charging, but keeps dropping. (I did notice that the plug is showing next to the battery but the battery icon inside isn't moving.)

    I'm not running anything out of the ordinary but I did get an automatic update this morning upon restart.

    Any ideas?

    (It dropped from 77 to 75% as I was writing this.)

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    Well the first thing I would say is that by leaving your device permanently connected to a/c you are now almost guaranteed to have completely ruined your battery! You may have even damaged the charging circuit and/or charger - but hopefully not.

    hopefully you may well find that your battery readings are just "off" because of the way you have treated the device. You may well find that the battery will start reporting things accurately once you can confirm that the a/c charger is working correctly.

    If so and you can power cycle your device while on battery only, then you can allow it to use its battery down to around 15% and then connect to a/c and power it off and leave it for 8 hours to recharge.

    Repeat that process a couple of times and you might save the situation.

    Good luck.
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    In addition to Janner's advice, you may want to check the information provided by Battery University.

    Basic to Advanced Battery Information from Battery University

  4. #4
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    Does that apply to all devices because I have my ipad2 all time connected to charger for 2 years now
    And when on battery its problem free

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    Rechargeable battery powered devices will have battery degradation if always left charging. It may take years, it may take months.

    I had an Archos 10" Android tablet that I left plugged in most of the time and after about a year, the battery began to overheat when charging and actually began to swell... it caused "ghost touch" points on the screen and rendered the tablet unusable.

    YMMV
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    Even if I am using it every day because the way I use the device will make me charge it almost every day because I use every day for long time in that case on daily use heavily best leave it in charger

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    Quote Originally Posted by ashruf View Post
    Does that apply to all devices because I have my ipad2 all time connected to charger for 2 years now
    And when on battery its problem free
    Quote Originally Posted by ashruf View Post
    Even if I am using it every day because the way I use the device will make me charge it almost every day because I use every day for long time in that case on daily use heavily best leave it in charger
    Charging a device every day isn't any sort of problem. I have always charged all my mobile devices every day - normally because they need it. Leaving any device with a battery connected to a/c power all the time is a very bad thing as you would know if you took the time to read the Battery University information and read more widely as well. Just because you have got away with it this long doesn't mean the science supports your position.

    You are fortunate in the fact that Apple specify the highest quality of batteries available in the mobile marketplace. They are specified with double the quality of Asus batteries (Apple = 1000 full deep cycles before a 20% loss of capacity. Asus = 500 deep cycles before a 20% loss of capacity). They also have the most reliable and robust charging system and intelligent charging regimen built into their firmware.

    The facts speak for themselves, if you leave any battery containing device permanantly connected to an a/c source you will inevitably and invariably damage the battery & possibly other hardware components as well.

    PLEASE Search for existing threads before posting a new one. Thanks.

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    Starscream
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    There's a reason all of these are called 'Mobile', 'On the go' devices, which clearly states the obvious. Allowing you to move freely, taking them with you while using them. Having them on constant charge destroys the life of any battery. It basically reduces their life, as mentioned above. You charge them when required and remove them when required. Then you use them, and repeat.


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    Quote Originally Posted by BuzzB View Post
    Hi. I've had my T100 for about 10 months and never had battery problems.

    Most of the time, nearly 100% of the time, the unit is plugged into the wall. It stays between 90 and 100% charged and if it gets below 95 is usually starts to charge back up.

    Today, the available charge is in the high 70's, says it's charging, but keeps dropping. (I did notice that the plug is showing next to the battery but the battery icon inside isn't moving.)

    I'm not running anything out of the ordinary but I did get an automatic update this morning upon restart.

    Any ideas?

    (It dropped from 77 to 75% as I was writing this.)
    BuzzB - We are sorry to hear that you're having charging issues with your T100. Please send us an email at socialsupportus@asus.com providing your T100's serial number and a detailed description of the issue (when it started, etc).

    If you have any further questions, comments or concerns please do not hesitate to let us know. We will be more than happy to assist you. Once again, thank you for choosing ASUS products and services.

    Thank you.


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    Asus USA is a social support channel for North American purchasers. UK users requiring warranty support should contact their retailer. For other geographic locations, please check your product documentation or the Asus website for your locality and follow the support section instructions.




    Transformer Forums is a privately owned "user to user" forum and is not affiliated with ASUSTeK Computer Inc in any way.

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    Quote Originally Posted by Asus_USA View Post
    BuzzB - We are sorry to hear that you're having charging issues with your T100. Please send us an email at socialsupportus@asus.com providing your T100's serial number and a detailed description of the issue (when it started, etc).
    It's great that you are here & offering to help, but posting the same response to virtually everyone isn't a whole lot of use IMO!

    Especially when BuzzB has already detailed the why, when & how of his situation & you quote that but then ask him to tell you why, when & how.

    What's the idea with that...
    Caster and rickscheller like this.

    PLEASE Search for existing threads before posting a new one. Thanks.

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