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Support Battery % is different when on or off

Discussion in 'Android Devices' started by ItsTheSmell, Oct 31, 2019.

  1. ItsTheSmell

    ItsTheSmell Lurker
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    Ive got an Axon 7 that shuts down at 15%, when I plug the charger in itll be something like 54% and when I turn it on the battery might be something totally different. Last nightafter it closed itself down I charged it to 100% while it was off, switched it on and it was at 100%. I watched a couple of videos, then closed all apps and turned wifi & mobile data off and it dropped to 2%. There it stayed until 11pm that night, I moved some files from phone to sd card and it lost power. I plugged it in and it was reading 34% while it was off. Can someone tell me whats going on, is the battery knackered or is it just out of sync?
     

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  2. lvt

    lvt Android Expert
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    How old is your phone?
     
  3. ItsTheSmell

    ItsTheSmell Lurker
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    I bought it new in Jan 2017
     
  4. lvt

    lvt Android Expert
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    So it's almost 3 years old.

    Maybe the battery can no longer hold the designed charge or its voltage sensor goes bad.

    I would try the following, turn your phone off and leave it on the charger until the battery is full. This way a new battery stats file will be created and it may fix the problem. If the problem persists, it's hardware and you should have the battery replaced.
     
  5. ItsTheSmell

    ItsTheSmell Lurker
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    It has been used heavily so my guess based on your replies is its gone faulty. I can't find a genuine battery for it, only after market batteries which could potentially be dangerous.
     
  6. ItsTheSmell

    ItsTheSmell Lurker
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    It shut down at 2%, I plugged the charger in just as it went off and the powered off status was 1%. I switched it on and its gone up to 7%. Here's hoping.
     
  7. lvt

    lvt Android Expert
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    Anyway, one of the easy ways to predict a battery performance degradation is to charge the battery to 100%, disconnect the charger and reboot the phone.

    From my observation, a healthy battery shouldn't lose more than 1% or 2% after the reboot. If your battery suddenly loses like 5% or more, it's not good.
     
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  8. dontpanicbobby

    dontpanicbobby 100% That Guy
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    Try Battery Widget Reborn! It's been my go-to for awhile now. BTW the exclamation point is not mine. It's part of the apps name...
     
  9. ItsTheSmell

    ItsTheSmell Lurker
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    I've checked the battery usage data and WiFi has used 15% but I never use WiFi. Why is WiFi being used when all my AP are switched off?
     
  10. ItsTheSmell

    ItsTheSmell Lurker
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    So buried in location services is a switch for Wifi Scanning. In battery usage wifi used the same amount as RF while it was off. Switched it off and got a lot more battery life from my dying battery.
     

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