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Thread: Is charger overheating mainly due to defective battery?

  1. #11
    Jazz
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    Exclamation

    Quote Originally Posted by rickscheller View Post
    I concur, the original Asus 2A charger does get warmer in use than the PWR+ 3.5A charger while everything is functioning properly. The "warmth of the charger, while in use, will taper off as the battery charge increases up the curve to full charge.

    To the original OP, you said your T100 shuts off at about 40% battery. Since the battery in the T100 is comprised of two lithium ion battery cells, I'd guess connected in parallel... would explain your two observations. I believe one of the two Lion battery cells has a low resistance short which is: 1) why any charger used will get warm/hot... since the bad cell is drawing excess current across that shorted cell, 2) having that shorted cell not to take a charge will cause the T100 to shut off at 40% battery.

    Think of it as a car battery with a shorted cell. Car won't start or turns over slowly and the battery won't hold a charge on that cell over-working the alternator. Root cause = bad battery.

    Again, you need to replace the battery pack.
    Note, this can be done yourself. There are youtube videos showing how.

    Thanks again Rickscheller, but could you oblige me in answering my earlier specific question (edited for more clarity here) about which I am most interested: "Rickscheller, I have found that the heat of the PWR + 3.5A charger is less than the 2.0A charger, and it gives off no smell unless I put my nose right up to it (just a little then), but what I really want to know, to see if it is working normally, is: does your PWR+ 3.5A charger get slightly warm only "initially" (initial use) or stay that way for the full duration of time that you use it, especially if you are using your T100 at the same time as charging it. Or, in your experience, does it get warmer or even much warmer after a period of time beyond initial use? Please let me know; thanks!"

  2. #12
    Jazz
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    Exclamation calling Rickscheller

    Quote Originally Posted by novice1 View Post
    Thanks again Rickscheller, but could you oblige me in answering my earlier specific question (edited for more clarity here) about which I am most interested: "Rickscheller, I have found that the heat of the PWR + 3.5A charger is less than the 2.0A charger, and it gives off no smell unless I put my nose right up to it (just a little then), but what I really want to know, to see if it is working normally, is: does your PWR+ 3.5A charger get slightly warm only "initially" (initial use) or stay that way for the full duration of time that you use it, especially if you are using your T100 at the same time as charging it. Or, in your experience, does it get warmer or even much warmer after a period of time beyond initial use? Please let me know; thanks!"

    Oh Rickscheller, oh Rickscheller, where art thou? Wilt thou not reply?

  3. #13
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    My PWR+ 3.5 gets perhaps 1-2 degrees above ambient when initially charging even if my T100 is in use. When the T100 becomes fully charged the charger returns to ambient.

    I have no more advice for you novice1 other than what I've previously given.
    janner43 likes this.
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  4. #14
    Jazz
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    Quote Originally Posted by rickscheller View Post
    My PWR+ 3.5 gets perhaps 1-2 degrees above ambient when initially charging even if my T100 is in use. When the T100 becomes fully charged the charger returns to ambient.

    I have no more advice for you novice1 other than what I've previously given.

    You had earlier mentioned the "initial charging" period (maybe the first 5 -10 mins?), and you had already mentioned the slight increase in temperature during that initial stage, but what I was asking you is what happens AFTER that "initial stage" and well BEFORE the "fully charged" stage; call it the "long middle" stage During that "long middle" stage (before the battery gets to around %85 - %90 full), does your PWR+ become warmer than it gets during the "initial" stage? Or does it stay at the same temperature as during the initial stage? Thanks! (It's not that complicated a question.)

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    @novice1
    Rick has answered you. His PWR+ is hottest during the first few minutes of charging (when it is outputting its highest current draw) it then gradually cools back to ambient as the current draw decreases.

    I have answered you & explained in great detail.

    Even Asus have answered you!!

    It has been recommended to you that you either DIY replace your battery or that you return return your device to Asus under warranty via RMA. There is nothing more we can add.

    Good luck with your repair.

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

    Your opinion matters. But should you disagree - please try not to be disagreeable

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  6. #16
    Jazz
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    Exclamation

    Quote Originally Posted by janner43 View Post
    @novice1
    Rick has answered you. His PWR+ is hottest during the first few minutes of charging (when it is outputting its highest current draw) it then gradually cools back to ambient as the current draw decreases.

    I have answered you & explained in great detail.

    Even Asus have answered you!!

    It has been recommended to you that you either DIY replace your battery or that you return return your device to Asus under warranty via RMA. There is nothing more we can add.

    Good luck with your repair.

    Janner43,

    Please go back and re-read Rick's post and you will see that he did not say anything near the specificity of what you just said -- nothing about it being hottest during the first 10 minutes or gradually cooling back to ambient. I regret your emotion has trumped accuracy here.

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    Thread closed

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

    Your opinion matters. But should you disagree - please try not to be disagreeable

    Forum guide - here ~~ T100 FAQs - here ~~ Cold boot - here

    Adobe Flash Player & Browser Guide here

    Master Help Guide - here ~~ FAQ malware - here ~~ FAQ e-reading - here
    Mobile OS devices personal pantheon...
    ANDROID: Doogee DG310; SGS; Huawei Y300; Motoroloa Xoom 2ME; Razr; Defy Mini; CnM Touchpad II;
    Asus TF101; Lenovo A1; Samsung Tab 2 7.0
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    CHROMEBOOK: HP 14-Q010sa Celeron 14 Inch 4GB 16GB Chromebook - White.

 

 
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