02-11-2017 08:20 AM
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  1. smooth4lyfe's Avatar
    Something I was wondering, for those who charge up their phones a lot using the cable, if one were to leave fast charging on all the time, is that bad for the battery or phone?
    ShaunAFC3 likes this.
    03-31-2015 05:11 PM
  2. clevin's Avatar
    this has been asked before, in theory, yes, in practice, nobody has seen noticeable difference.
    03-31-2015 05:17 PM
  3. Rukbat's Avatar
    "Fast" charging is actually about 0.5C charging, which, as far as the battery is concerned, pretty slow charging. (0.75C is the maximum recommended rate for the life of the battery, but charging at 1C once in a while, as long as the battery is ventilated enough to not overheat, is no problem.

    Leaving the charger plugged in for a few years is no problem either - charging stops when the battery is fully charged. If you leave the charger plugged in long enough the battery will self-discharge down to about 99% and the charger will kick in for a few minutes to top the battery off. BTW, when the phone says "100%", the phone probably isn't at full charge. If you don't have an app that shows battery voltage to 3 places, leave the charger plugged in for 30 minutes after reaching "100%" to make sure the battery is fully charged. (If you do, keep charging until the voltage stops increasing - that's what the phone's supposed to be watching for to turn charging off.)

    @Clevin:
    No one will, unless the charging circuit in the phone goes bad and the battery gets overcharged. (Which, other than one defective lot of Sony batteries a few years back, hasn't happened.)
    03-31-2015 05:20 PM
  4. smooth4lyfe's Avatar
    "Fast" charging is actually about 0.5C charging, which, as far as the battery is concerned, pretty slow charging. (0.75C is the maximum recommended rate for the life of the battery, but charging at 1C once in a while, as long as the battery is ventilated enough to not overheat, is no problem.

    Leaving the charger plugged in for a few years is no problem either - charging stops when the battery is fully charged. If you leave the charger plugged in long enough the battery will self-discharge down to about 99% and the charger will kick in for a few minutes to top the battery off. BTW, when the phone says "100%", the phone probably isn't at full charge. If you don't have an app that shows battery voltage to 3 places, leave the charger plugged in for 30 minutes after reaching "100%" to make sure the battery is fully charged. (If you do, keep charging until the voltage stops increasing - that's what the phone's supposed to be watching for to turn charging off.)

    @Clevin:
    No one will, unless the charging circuit in the phone goes bad and the battery gets overcharged. (Which, other than one defective lot of Sony batteries a few years back, hasn't happened.)
    Awesome thanks for this answer
    03-31-2015 05:25 PM
  5. clevin's Avatar
    just to add, for li-ion battery, charging to 100% is not recommended, nor is it required. You can pretty much charge from any % to any % with no ill effect on the battery itself, actually better to avoid 0-100 charging.
    Gray Area likes this.
    03-31-2015 05:28 PM
  6. smooth4lyfe's Avatar
    just to add, for li-ion battery, charging to 100% is not recommended, nor is it required. You can pretty much charge from any % to any % with no ill effect on the battery itself, actually better to avoid 0-100 charging.
    Why is that? So overnight charging is not good?
    03-31-2015 05:31 PM
  7. clevin's Avatar
    Why is that? So overnight charging is not good?
    my explanation is in full here http://forums.androidcentral.com/goo...tery-life.html

    All information from batteryuniversity.com

    Now, obviously you will have to balance the recommendation in my other post, with the fact that the phone needs to last reasonably long, so if 30-80% rule doesn't work for you, try 20-85%.
    smooth4lyfe likes this.
    03-31-2015 05:33 PM
  8. smooth4lyfe's Avatar
    my explanation is in full here http://forums.androidcentral.com/goo...tery-life.html

    All information from batteryuniversity.com

    Now, obviously you will have to balance the recommendation in my other post, with the fact that the phone needs to last reasonably long, so if 30-80% rule doesn't work for you, try 20-85%.
    Very good information thanks
    03-31-2015 05:37 PM
  9. Almeuit's Avatar
    this has been asked before, in theory, yes, in practice, nobody has seen noticeable difference.
    This.
    ShaunAFC3 likes this.
    03-31-2015 05:55 PM
  10. msm0511's Avatar
    my explanation is in full here http://forums.androidcentral.com/goo...tery-life.html

    All information from batteryuniversity.com

    Now, obviously you will have to balance the recommendation in my other post, with the fact that the phone needs to last reasonably long, so if 30-80% rule doesn't work for you, try 20-85%.
    I remember reading a while ago about a 20-80% advantage. I can't seem to follow that advice. LOL. My battery rarely gets below 30%, but can't break the habit of charging til 100%
    ShaunAFC3 likes this.
    03-31-2015 06:40 PM
  11. STEVESKI07's Avatar
    I remember reading a while ago about a 20-80% advantage. I can't seem to follow that advice. LOL. My battery rarely gets below 30%, but can't break the habit of charging til 100%
    Same. I can't stand seeing my phone dropping below 30%, but I will most likely be going to 100% each time, especially over night to start the next day.
    ShaunAFC3 likes this.
    03-31-2015 07:00 PM
  12. paperb0x's Avatar
    Since the S6 only comes with a fast charger, would anybody suggest purchasing another charger that isn't "fast charging"?
    If so, any suggestion/recommendations?
    ShaunAFC3 likes this.
    03-31-2015 07:08 PM
  13. TheAppleGuynotimpressed's Avatar
    In my business of charging I've seen batteries charged at way above 1C. The thing about fast charging is it uses more voltage than amps. While I'm not 100% familiar with the way my peak chargers load all the amps in using more voltage seems fairly unsafe. The idea of battery physics us against it however the laws of electricity are for it as far as I know

    Posted via the Android Central App
    08-10-2015 07:55 PM
  14. LOLWOWJason's Avatar
    Thank you to solve my problem too...
    08-10-2015 10:34 PM
  15. ArtificiallyYours's Avatar
    Usually I've started plugging my phone in when it was on the red or gave me critical-notice, I've also restarted my phone to charge it as to alleviate drain issues. But this blows those methods out of the water. Thank you for posting this man.
    11-02-2015 02:08 PM
  16. Eddy Q's Avatar
    Since the Fast Charger outputs 9 or 5 volts, is it safe to use it to charge other phones that are not setup for fast charging?
    11-03-2015 02:51 PM
  17. Eddy Q's Avatar
    I typed the post twice but can't see how to delete the 2nd one so I changed it to this "ignore" message.
    11-03-2015 02:53 PM
  18. Eddy Q's Avatar
    I have to charge mine at least twice a day. I play with it constantly.
    11-04-2015 12:41 PM
  19. thatnote4's Avatar
    Why is that? So overnight charging is not good?
    Yes, charge over night. Dont listen to that guy. FTom years of experience and being a technician myself. I can tell you that it won't hurt the battery. As long as you don't overheat the battery your fine. Also, You can charge 0-100 with no side affects. Now don't do It regularly but it is good to "calibrate" the battery by going 100% to 0% and back to 100%. Do what your comfortable with and what you can do in your time. The batteries of today are smarter and so are the chargers them selfs.
    ShaunAFC3 and danx55 like this.
    01-03-2016 07:47 PM
  20. bbtkd's Avatar
    Yes, charge over night. Dont listen to that guy. FTom years of experience and being a technician myself. I can tell you that it won't hurt the battery. As long as you don't overheat the battery your fine. Also, You can charge 0-100 with no side affects. Now don't do It regularly but it is good to "calibrate" the battery by going 100% to 0% and back to 100%. Do what your comfortable with and what you can do in your time. The batteries of today are smarter and so are the chargers them selfs.
    I agree that you should be able to allow your phone to charge overnight, and should be able to use rapid charging - but that is presuming a problem doesn't arise. There have been several cases - certainly the vast minority - on these forums of phone batteries bursting, failing, and even destroying the phone. In these cases something apparently did not work as designed, and that can happen with any technology. It comes down to how paranoid you want to be. I personally won't use rapid charging because I don't need it, so can eliminate some risk. Same goes for overnight (read unattended) charging - I avoid that by charging before I go to bed. Lithium Ion batteries are dangerous if breached and exposed to air, so charging needs to occur in a way that is controlled and does not exceed specified temperatures.
    ShaunAFC3 likes this.
    01-04-2016 05:45 AM
  21. ABOSWORTH007's Avatar
    just to add, for li-ion battery, charging to 100% is not recommended, nor is it required. You can pretty much charge from any % to any % with no ill effect on the battery itself, actually better to avoid 0-100 charging.
    I've read this as well but I really don't care because I get a new phone every six months to a year and have never noticed anything bad happening in that time. Lol
    01-04-2016 06:51 PM
  22. thatnote4's Avatar
    I agree that you should be able to allow your phone to charge overnight, and should be able to use rapid charging - but that is presuming a problem doesn't arise. There have been several cases - certainly the vast minority - on these forums of phone batteries bursting, failing, and even destroying the phone. In these cases something apparently did not work as designed, and that can happen with any technology. It comes down to how paranoid you want to be. I personally won't use rapid charging because I don't need it, so can eliminate some risk. Same goes for overnight (read unattended) charging - I avoid that by charging before I go to bed. Lithium Ion batteries are dangerous if breached and exposed to air, so charging needs to occur in a way that is controlled and does not exceed specified temperatures.
    Dude, I been using android phones since the first phone that was android. From being a technician for cellphones, computers, ETC. All these "things" happening I never came across. Never heard of these things happening. People are lying to the man. The weird charging intervals are not needed. 30% to 100% is not needed. Calibrating a battery is needed atleast every 2 weeks. I don't need to know all about batteries failing and exploding because someones mistake. You can charge a phone overnight if however there is enough ventilation for the battery to keep cool. Also, I agree that fast charging is not needed all the time.
    ShaunAFC3 likes this.
    01-10-2016 09:24 PM
  23. bbtkd's Avatar
    Dude, I been using android phones since the first phone that was android. From being a technician for cellphones, computers, ETC. All these "things" happening I never came across. Never heard of these things happening. People are lying to the man. The weird charging intervals are not needed. 30% to 100% is not needed. Calibrating a battery is needed atleast every 2 weeks. I don't need to know all about batteries failing and exploding because someones mistake. You can charge a phone overnight if however there is enough ventilation for the battery to keep cool. Also, I agree that fast charging is not needed all the time.
    I too have been using Android phones from day 1, and have been into electronics (personally and professionally) for about 50 years. I have never personally had a lithium-ion battery breach and start on fire, but given that lithium ignites on exposure to air, I have no reason to disbelieve the cases I've read about on the news and on the forums where through no fault of the owner, the charging circuit or battery fails and causes overheating and/or breach of the battery. Luckily, such failures are so rare that most folks have never seen or heard of it. Doesn't mean it doesn't happen.
    01-10-2016 09:53 PM
  24. chezm's Avatar
    I only use the bundled fast charger to charge my phone, my expectation is I should be able to use only it and not damage or harm the battery. If something were to happen I'd be pretty pissed off considering it's the dedicated charger.

    Posted via the Android Central App
    ShaunAFC3 likes this.
    01-11-2016 06:53 AM
  25. bbtkd's Avatar
    I only use the bundled fast charger to charge my phone, my expectation is I should be able to use only it and not damage or harm the battery. If something were to happen I'd be pretty pissed off considering it's the dedicated charger.
    Posted via the Android Central App
    Yes you SHOULD be able to use that charger, and would have every right to be pissed if it failed and cooked your phone/battery.
    chezm and ShaunAFC3 like this.
    01-11-2016 09:52 PM
37 12

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