BatteryReport: 25k charging cycles in 9 months !

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  1. Posts : 6
    Windows 10
       #1

    BatteryReport: 25k charging cycles in 9 months !


    My daughter run the batteryreport on her graphic tablet (windows 10). The result: 25k cycles, 50% remaining capacity - after 9 months. Now the battery has swollen. How is this possible ? This would make at least 4 cycles/h (if running 24h/day). What could be the source of the problem? The first battery had 55k cycles in less than 18 months and the battery replacement was made by the customer support of the tablet manufacturer.
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  2. Try3's Avatar
    Posts : 7,494
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #2

    If the battery has swollen then it has suffered heat damage and is probably in a dangerous condition. You should not use it any more.

    By the way, I have never found out what that Cycle count entry really means. The entry is empty on my laptops and 25,000 on my tablet [upon receipt & ever since].

    Denis
    Last edited by Try3; 24 Jan 2020 at 17:37.
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  3. Posts : 6
    Windows 10
    Thread Starter
       #3

    Try3, thank you for your reply. In march 2019 the new battery had 1750 cycles. And it started to swell in january when there is little sunshine and it should not have been exposed to the sun. At the battery end-of-life could charging/discharging cause internal heat to cause the swelling?
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  4. Try3's Avatar
    Posts : 7,494
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #4

    It's battery usage that causes heat - the weather would not affect it much if at all. The battery should always be capable of dealing with at least the heat that its designers anticipate. The swelling you reported indicates that there has been excessive heat that the battery casing and/or internal components could not deal with.

    In light of the 2 replies below I should add that, unless you have been baking your tablet in boiling chocolate or drowning it in melted snow, the cause of the problem is a manufacturing defect that leads to excessive heat build-up [whether it is excessive current causing excessive heat or a misbehaving casing/component causing excessive heat]. To resolve the situation, you will need to hold the supplier / maker to account.

    Denis.
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  5. Megahertz's Avatar
    Posts : 2,439
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #5

    The main problem can be a sub dimension battery, that charges with over current and drains at over current.
    Does the graphic tablet has a 75% max charging set to expand battery life?
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  6. hsehestedt's Avatar
    Posts : 2,159
    Windows 10 Pro, 20H2
       #6

    The swelling can often be just a manufacturing defect. My HP ultrabook had a battery in which all 6 cells were swollen. It sits on a desk in a room with a constant 72 degrees F and is NEVER exposed to any heat. HP replaced it for free even though it was WAY out of warranty. Laptop is never stressed and barely even gets warm.
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  7. Posts : 723
    win10 home
       #7

    See if ;
    1 powercfg /energy
    2 powercfg /batteryreport
    give you any useful information.
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  8. Posts : 6
    Windows 10
    Thread Starter
       #8

    Dear joeandmarg0
    My daughter did run the batteryreport. Screenshots: Batterie - Google Drive
    As mentioned, the battery pack was replaced in march 2019. In the beginning it had 50 Wh capacity, specially in dec the full charge capacity dramatically dropped to 25 Wh. At the beginning it took 1h to charge from 20 to 80% and there were 4h autonomy from 80 to 20%.

    - - - Updated - - -

    Try3, Megahertz, hsehestedt
    Thank you for this information. I will forward it to the customer service (not copy/paste - I hope you do not object to this).
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  9. Try3's Avatar
    Posts : 7,494
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #9

    Good luck.

    Personally, I think your best bet is to simply tell them that the battery is swollen and that damaged batteries are a fire risk. Then use what you 've learnt here to appraise their response.

    Do let us know the result and which company it is - it is often difficult to get decent reports of user experiences with tablet-makers {mine is very poor - Chuwi}.

    Denis
      My Computer


  10. Posts : 723
    win10 home
       #10

    Check the charger and do not use it until you do so.Remember the exploding battery saga of Samsung in 2018.
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