Do NOT use cheap wall adapters for charging!

Discussion in 'What NOT to do!' started by zafirovp, Jul 9, 2017.

  1. zafirovp

    zafirovp New Member

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    I have Xtar mc1 1amp charger. It is charging my battery to 4.19 or 4.20 exactly. Usually Im using apple iPhone wall adapter but today I tried cheap 5 years old Joyetech Ego 0.5 amp wall adapter. Now my battery is slightly overchargerd at 4.23.

    Use only quality wall adapters even if you have high end charger!

    Maybe somebody more knowledgeable will explain to us why this is happening.


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  2. conanthewarrior

    conanthewarrior Gold Contributor Member For 2 Years

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    Don't use the cheap adapter, it is under rated. The charger is 1A, so make sure your adapter can at least output this.

    It is very strange the battery was slightly overcharged if it has been consistently at 4.19 or 4.2V. Usually batteries come off at say 4.2V, then drop a bit quickly. How long did it take for the voltage to fall under 4.2V, or did it stay at 4.23V?

    The adapter has no say on how far your battery is charged, this is all controlled by the charger so although strange, isn't actually the adapters fault in this case.
     
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  3. zafirovp

    zafirovp New Member

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    Maybe the Joyetech adapter is more than 1amp. Is it possible or even if I plug Samsung charger (2.1A) the charger will draw only 1A?


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  4. The Cromwell

    The Cromwell VU Donator Diamond Contributor Member For 1 Year

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    THIS!
    How do you expect to run a 1 amp charger with a 1/2 amp adapter?
     
  5. The Cromwell

    The Cromwell VU Donator Diamond Contributor Member For 1 Year

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    Yep as long as the wall adapter is capable of putting out more amps than the charger needs all is good.
    The charger will use what it needs from the adapter. But if the adapter can't keep up bad things are likely to happen.
     
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  6. zafirovp

    zafirovp New Member

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    All clear. But if so why I cant use more than 1amp adapter for charging my Vtc Mini with usb cable? Or maybe because it has much cheaper charging board.


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  7. The Cromwell

    The Cromwell VU Donator Diamond Contributor Member For 1 Year

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    You can use a 2 amp wall adapter for the VTC mini if you want.
    i used to use a 2 amp adapter for charging EGO batteries.
    The mod will only use what it needs but must have what it needs or more supplied to it.
     
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  8. conanthewarrior

    conanthewarrior Gold Contributor Member For 2 Years

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    As @The Cromwell already said, you can use an adapter with a higher amp rating- I do all the time. Whatever is connected just draws what it needs, which can be bad when you are using a under rated adapter (Can get hot and in some cases catch fire).
     
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  9. zeeter

    zeeter New Member

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    How about when using a PC to charge?
     
  10. The Cromwell

    The Cromwell VU Donator Diamond Contributor Member For 1 Year

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    Generally not recommended since USB 3.0 specs are .9 amp.
     
  11. skt239

    skt239 VU Donator Platinum Contributor Member For 2 Years

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    Don't use a pc to charge
     
  12. zeeter

    zeeter New Member

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    Thanks. Switched to a Samsung 2A charger.
     
  13. eshishapenreviewsuk

    eshishapenreviewsuk New Member

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    i used to do this, thankfully know a bit better now
     

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