02-17-2017 01:50 PM
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  1. beh's Avatar
    Can you say "much ado about nothing" boys and girls?
    05-19-2015 11:32 PM
  2. natehoy's Avatar
    Can you say "much ado about nothing" boys and girls?
    In a forum for a phone with a sealed battery, this can become a very serious, and somewhat important, question.

    Newer Lithium tech is a lot more durable than those of older pedigree, but they still suffer small amounts of damage from misuse and smaller amounts of damage from "normal" use (fully charging, discharging to shutdown, all of these things do very tiny amounts of capacity damage).

    And with smartphones approaching the thousand dollar range, it's a fairly serious thing to consider. A 20% loss in capacity, which is a perfectly normal thing to have happen over a year or so, could turn your all-day smartphone into something you need to charge mid-day. And for some, that means needing to change the battery out to get their day out of it again. Except with a sealed battery, you can't.

    So for something with a glued-in battery, the question "does recharging this to 100% overnight every night result in an additional loss of capacity above and beyond normal wear and tear" is a very serious one. And with the dizzying arrays of technology and charging patterns that mean different answers to that question for each phone, I'm relieved to say, "who the heck cares? Enjoy your device, and in a year, buy a $20 battery."
    05-20-2015 10:59 AM
  3. Roo_thless's Avatar
    God reading some of the people in this thread, of course you can leave it plugged it without damage...jesus

    Posted via the Android Central App
    Wayne Sanders likes this.
    05-21-2015 05:17 PM
  4. Alex Wetzel's Avatar
    I'm not going to dispute the points you've posted and really appreciate the time you've spent to help others, but the one time I did leave my note 4 connected to the fast charger overnight I got a notification to disconnect the phone...something to the effect of "battery at 100% disconnect from charger". I have not seen this when connected to my laptop or desktop. I don't think my phone will explode but isn't this some warning from Samsung related to their batteries, perhaps?

    Since then I prefer to charge my phone in the morning as I get ready to leave. It charges up full quickly and doesn't stay on the fast charger past an hour at most.

    Posted via the Android Central App
    That's your phone reminding you to unplug it from the charger when it's fully charged. You can still leave it plugged in overnight.
    mumfoau likes this.
    05-21-2015 05:42 PM
  5. Victor Suarez's Avatar
    FYI...this is from Samsung customer service group:
    I would like to inform you that Samsung does not recommend you to charge the device for the whole night, as this may case battery draining and battery issues with the device. Charging the device for long time even after battery full notification will effect the performance of the device.

    We recommend you to unplug the device from charging after the device is completely charged to 100%.
    05-22-2015 09:13 AM
  6. LegalAmerican's Avatar
    Jesus, you have no clue what you are talking about and blatantly misleading people here.

    You completely ignore the laboratory test results with real, precise measurements, and based your false statement on your own " Research, experience with Hobby grade Li-Ion and Li-Po batteries/chargers. "? Jee, with your method, who need science?
    Even if those laboratory results are accurate, after the 18 months that it will require to degrade my battery 1%, i'll just buy a new one for $25 and go on with life. That sure beats waking up at 1:23 every morning to unplug my fully charged phone for fear of eventual degradation.
    Brandwin likes this.
    05-22-2015 09:50 AM
  7. Rukbat's Avatar
    FYI...this is from Samsung customer service group:
    I would like to inform you that Samsung does not recommend you to charge the device for the whole night, as this may case battery draining and battery issues with the device. Charging the device for long time even after battery full notification will effect the performance of the device.

    We recommend you to unplug the device from charging after the device is completely charged to 100%.
    Then, as someone who has worked in the battery industry designing the things, I have to inform Samsung that they're not making their phones correctly. A properly designed lithium charger will stop charging once the battery reaches 100% charge without any charging voltage with a normal load (IOW a real full charge, not the fake "terminal voltage under charge" "full" charge). But, since that would prpbably cost them 20 cents per phone, they're not going to do it. (I have a lithium battery (It happens to be a Samsung, BTW) that's been sitting on a correctly designed charger for about 22 months now, I test it about once a month, and it's at about the same condition as right after it was conditioned. All night? All month is safe - if the charging circuit is properly designed.) Wireless charging is another matter - the heat decreases the battery life a little, so it should be taken off as soon as it's fully charged - the receiver doesn't shut off then, it keeps drawing current and warming the battery.

    The only reasons to "recommend" removing the battery from the charger when it's fully charged (and that's about half an hour AFTER you get the warning - have some of you battery engineers test some of your batteries for actual, chemical, State of Charge under various "full charge" scenarios) is to lessen the possibility of thermal runaway by a fraction of a percent. OR because the charging circuit is designed for cheapness, not for best-for-the-battery operation. A cheap charger can destroy a battery in less than 24 hours.
    tsells and mumfoau like this.
    05-26-2015 01:06 AM
  8. gorgalis's Avatar
    I have always done this every night for any phone I have ever had with no issues at all.

    Granted with the Note 4, I use my BlackBerry charger which is not the "fast charging" one, but no issues with battery life at all.
    Same... been using the same BlackBerry charger every night since 2008!
    05-26-2015 10:31 AM
  9. Double Tap's Avatar
    Sorry to bring back such an old thread, however today I replaced the battery in my 3 year old Nexus 4. The Tech that did it for me showed me the old battery. It is bulging quite substantially but didn't burst. His question to me was do you keep the phone charging all night? My answer was every night for 3 years.

    In 2 Days I will be replacing the battery of my wife's Nexus 4. If it too has a bulging battery that will be enough evidence for me that constantly charging is detrimental for the battery.

    Posted via the Android Central App
    01-07-2016 06:57 PM
  10. Dustoff-00's Avatar
    Please keep us posted on the result of your wife's battery...
    01-08-2016 07:37 AM
  11. gorgalis's Avatar
    Sorry to bring back such an old thread, however today I replaced the battery in my 3 year old Nexus 4. The Tech that did it for me showed me the old battery. It is bulging quite substantially but didn't burst. His question to me was do you keep the phone charging all night? My answer was every night for 3 years.

    In 2 Days I will be replacing the battery of my wife's Nexus 4. If it too has a bulging battery that will be enough evidence for me that constantly charging is detrimental for the battery.

    Posted via the Android Central App

    Finding that the battery has a bulge has nothing to do with whether or not it was charged every night. I recently found my old Blackberry in a desk drawer that I haven't seen in years and the battery had a huge bulge in it. It has not been on a charger in at least three years and I know for sure that it was not that way the last time I used it. It just happens over time, if it is bulged, it has more to do with the battery being three years old than nightly charges.
    Kelly Kearns likes this.
    01-08-2016 10:14 AM
  12. Double Tap's Avatar
    Please keep us posted on the result of your wife's battery...
    I had my wife's phone battery replaced today and much to my surprise the battery appears completely normal.

    Posted via the Android Central App
    01-09-2016 10:25 PM
  13. Jimomg's Avatar
    I have left my s5 on the charger over night, every night since July. And have no battery issues.

    The same with my s3 i had for 2 years with no problems

    Posted via the Android Central App
    This is what the deal is... on older phones (10 yrs. ago or so) or just about anything electronic it was probably not a good idea to leave you "stuff" charging all night. But technology has done away with this year's ago. I leave all my things charging all night. Phone, laptop and watch never had a problem. Now some people will still not believe this and will call their carrier or the company that made their product, and ask them the same question. If you speak to someone that just got their job and has no idea what they are talking about they will tell you not to leave things charging over night. SPEAK TO A TECH OR A SUPERVISOR.
    05-27-2016 01:16 AM
  14. ATOMICANTMAN's Avatar
    I have a bunch or LIPO RC car batterys and seems like 1 out of every two will bulge. I have a top line chager and only balance charge them so I am at a loss why it happens. I have never seen a phone or tablet battery bulge yet. I keep my Notepro 12.2 plugged in 24/7 since I bought it a couple years ago. No problems with it at all so far.
    05-27-2016 03:21 PM
  15. Sarah0516's Avatar
    My own story:

    I always leave my main phone and my tablet charging overnight, never have had a problem.

    I have a Samsung Galaxy S5 which I got shortly after the model was released, and which was my main phone for about a year. I used it heavily, and charged it overnight every night, not a single problem.

    I then got a new phone which became my new, and the S5 became my secondary phone, which I kept for emergencies and also for using for other stuff. But I didn't use it much for a few months, and left it mostly off. I then set up a makeshift home monitoring system, and used that phone pointed at an entry. So it was on all the time, running the app, ready to spring into action and catch video. So I kept it constantly plugged in.

    Then I got bored with that system and shut it down. Got another new phone, so the S5 became just another extra phone around, without service, just wifi app usage capabilities. Left it shut off most of the time for a few months.

    Yesterday I came up with a new fun use for it (remote control for my harmony hub!!) so I powered it on, installed new app, etc. I realized that it needed an update for just about every app, would take hours, and the battery power was low, so I started the updates and left it plugged in charging, and went to bed. This morning I went to it and the screen was on, not sure why, but anyway I unplugged, and played with the phone for a while. Everything was working, all apps were updated, controlling Harmony hub nicely, etc. I set it aside and did other things for a while, then I looked over at it and noticed something didn't look "right". The screen was not tucked into the case and when I tried I couldn't get it to go. Weird, I didn't notice that before - did it just happen?? And the phone seemed a bit thicker. So I got concerned and took it to a table away from couch etc. Opened up the back and the battery was bulging quite a bit. Well, I'm no expert, but that seems like a bad thing, so I removed the bulging battery, put it in a safe place and will recycle ASAP, ordered a new battery, will wait on that to get it going again.

    So, all the normal charging overnight for a year never hurt it. Leaving it constantly plugged in running an app never hurt it. But after all that, leaving it charged overnight (like I always used to!) and finally things get scary. So, I guess as a general rule leaving it charging overnight may not be bad, but maybe age of battery and lots of use can lead to it eventually wearing out. I'm not going to stop charging my main phone (S7) overnight, but I definitely will be careful with my older phones.
    12-31-2016 02:27 PM
  16. pduffer's Avatar
    How low did the battery get before you decided to use it again? That might be why it bulged when charging fully after deciding to use it again.
    01-02-2017 02:28 PM
  17. datum9's Avatar
    I'm not going to dispute the points you've posted and really appreciate the time you've spent to help others, but the one time I did leave my note 4 connected to the fast charger overnight I got a notification to disconnect the phone...something to the effect of "battery at 100% disconnect from charger". I have not seen this when connected to my laptop or desktop. I don't think my phone will explode but isn't this some warning from Samsung related to their batteries, perhaps?

    Since then I prefer to charge my phone in the morning as I get ready to leave. It charges up full quickly and doesn't stay on the fast charger past an hour at most.

    Posted via the Android Central App
    The only place for fast charging that I see is when you need to charge urgently. Like in an airport or such. You are pumping 1 Amp to the phone battery, which is stressful for it, it cannot be good for it. I've dealt with Li-Ion batteries for years, mostly cylindrical like 18650 but the same exact same concepts apply to flat ones in smart phones.
    You want to charge at low Amps like 100 mAh and overnight. It's gentle on the battery and does not overheat it.

    fast charging has become a recent fad but it has been around for decades and has always been a bad idea. There is nothing revolutionary about sending over 1000 mAh to the phone and charging it in 45 minutes versus 6 hours.
    02-17-2017 01:44 PM
  18. datum9's Avatar
    My own story:

    I always leave my main phone and my tablet charging overnight, never have had a problem.

    I have a Samsung Galaxy S5 which I got shortly after the model was released, and which was my main phone for about a year. I used it heavily, and charged it overnight every night, not a single problem.

    I then got a new phone which became my new, and the S5 became my secondary phone, which I kept for emergencies and also for using for other stuff. But I didn't use it much for a few months, and left it mostly off. I then set up a makeshift home monitoring system, and used that phone pointed at an entry. So it was on all the time, running the app, ready to spring into action and catch video. So I kept it constantly plugged in.

    Then I got bored with that system and shut it down. Got another new phone, so the S5 became just another extra phone around, without service, just wifi app usage capabilities. Left it shut off most of the time for a few months.

    Yesterday I came up with a new fun use for it (remote control for my harmony hub!!) so I powered it on, installed new app, etc. I realized that it needed an update for just about every app, would take hours, and the battery power was low, so I started the updates and left it plugged in charging, and went to bed. This morning I went to it and the screen was on, not sure why, but anyway I unplugged, and played with the phone for a while. Everything was working, all apps were updated, controlling Harmony hub nicely, etc. I set it aside and did other things for a while, then I looked over at it and noticed something didn't look "right". The screen was not tucked into the case and when I tried I couldn't get it to go. Weird, I didn't notice that before
    A bulging battery is a classic case of a battery going bad from age. It's just old.
    02-17-2017 01:48 PM
  19. datum9's Avatar
    In a forum for a phone with a sealed battery, this can become a very serious, and somewhat important, question.

    Newer Lithium tech is a lot more durable than those of older pedigree, but they still suffer small amounts of damage from misuse and smaller amounts of damage from "normal" use (fully charging, discharging to shutdown, all of these things do very tiny amounts of capacity damage).

    And with smartphones approaching the thousand dollar range, it's a fairly serious thing to consider. A 20% loss in capacity, which is a perfectly normal thing to have happen over a year or so, could turn your all
    Good points.
    02-17-2017 01:50 PM
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