Another "issue" I found on my S9 was this :
When charged with the factory charger (fast charging disabled), phone was at 3% and i was still fiddling with it and it started making a weird noise (the phone, not the charger !). The sound was of very low intensity, lasted only 2-3 minutes and dissapeared when the screen was off. I managed to record it with the phone, but the volume is way louder than it actually was. In complete silence you could barely hear it, but nonetheless, it concerned me. It only happened once. I heard that the output being 9V/1.67A, the sound could be made when converting from AC to DC. It's only happened once.
The sound did not appear with a Huawei 5V/1A charger which I think i'll be using from now on since I only charge my phone overnight.
https://linksharing.samsungcloud.com/1522781621333Cf3Stag
Heard the same thing. Was on 1% and the noise was there till I reached 4%.
Used different Cables, Charger... Always the same thing.
If you're letting the battery get that low on purpose, you should know that's about the second worst thing you can do to a lithium ion battery. They HATE being fully discharged, and doing so will shorten the lifespan of the battery significantly. (The absolute worst thing you can do is overcharge them, but the circuitry in modern phones prevents that, unless you foolishly use a high output Apple charger intended for Apple laptops.) Electric cars, for the most part, keep their batteries between 25% and 75% to maximize lifespan.
The days when you needed to fully discharge and recharge batteries to prevent the "memory effect" disappeared along with NiCAD batteries.
Go to settings>apps> click on the 3 dots at the top right corner> shows system apps> usbsettings>storage>clear data/clear cache> restart device
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Hi all,
I've been having issues with my phone lasting nowhere as long as my girlfriends identical one,
I installed Quick System Info on both phones, Killed all tasks.. Not only is my display duller than hers on the lowest setting using the power control widget but the voltage on my battery is 3737mV while hers is 4071mV..
Is this cause for concern?
Update, forgot to mention, this is from a full charge on both handsets.
Sounds like your battery is fu#ked!
There seems to be an issue with the way android reports the battery voltage. If I leave my phone on the charger until the light goes green and the indicator says 100%, the voltage will often report between 4.146v - 4.156v.
Upon unplugging the phone would drop to 99% and 4.125v almost immediately.
I noticed the other day that after leaving the battery on the charger overnight the voltage was reporting as 4.206v and I was able to use the phone for over 15min before it dropped to 99% from 100%.
Minimum voltage before your phone powers off is around 3.6v - 3.650v. So 3.737 is pretty close to the cut-off point. The OS is may report 100% charge but your battery is not holding charge.
I had a battery on a different device that was like this. The battery had collapsed. I could charge it for 24hrs and it would not make a difference. Within 30min of use or 1 phone call it would die.
Does your battery have any bugles, bumps or protrusions? This is often a sign of a collapsed battery.
Edit: Don't write when you're tired, silly things come out of your fingers! Soz!
have you tried to swap batteries between the two phones. That will exclude either your phone or the battery from being faulty.
Yes, after scratching my head for a few days I did eventualy come up with the genius idea of putting the battery from the other phone into my phone!! and after charging it up, set it down for an hour and then checked and the battery was on 98% !!
So it looks like there is something wrong with my battery, This morning I woke up and my phone had been charging for 7 hours and was fully charged, I looked at the battery meter and it said 100%, I turned the phone off then back on and checked again.. 90% ???? WTF ??? just from turning the phone off and on?
Hey guys. Within a minute or so after my phones removed from the charger it drops to 95%.is this normal?im using the 1.8a LG charger that comes with the phone F240L.i read somewhere that they are using the LG charger 1.2a out of the box.does this phone have two different out of the box charger..thanks..
Completly normal. The method that seems to be employed for the battery percentage is read the voltage itself and make a guess
This high voltage drops down quite quickly both as a "load" is applied to the battery,. Plus there is not a lot of change in capacity from the very high voltages to the more normal voltages, in any li-ion battery. So while the voltage can be used to guestimate a range of charge levels, between like 4.0 and 4.3 there isnt much changed in the battery itself.
Further from what i have seen so far (not totally sure) they are charging to 4.35v which is a rescent slight change in the chemistry of the li-ion to allow for higher charge levels without it gassing or reducing the life (Havent tested that theory long enough yet either).
Also All li-ion alogrythms for charging do a CC CV charge, where the final charge is just "holding" the voltage at the high, till the batterys charge state floats up to that level. This can (not facted out yet) mean that leaving it on the charge past the time it claims it is fully charged , it will put tiny bits more into it. This happens more with my big fat zerolemon battery because it seems to have more resistance to the other connected cell items than would be desired.
Anyways all is well, just dont believe anything a computer tells you , and it will be fine The other methods have thier own deficiencies.
Other STUFF:
Li-Ion batteries really do not prefer to be left at their high charge voltages, as they degrade faster there. so when you read the above, or try "bump" charging methods (thats just restarting the charge) It is not good for it. The battery will be happier, using it like it was designed, taking it off the charge when it states it is full. all of this being more info than anyone needs to know, or freaking care about.
As a li-ion battery becomes old and weak, it will exhibit even more of these charateristics that have people wondering. It will drop off the highs quicker still, have less total capacity, and increse a tiny bit in resistance , which will cause it to drop even more under load. At some point the battery would be so bad at that, you would want to replace it.
Heat, the li-ion cells dont like these extreeme heats. they prefer to work more at normal room temps and cold but not extreeme cold. So take that in also as a factor in keeping your battery more happy, again if you want to waste half your life pampering the thing
runwithme21 said:
Hey guys. Within a minute or so after my phones removed from the charger it drops to 95%.is this normal?im using the 1.8a LG charger that comes with the phone F240L.i read somewhere that they are using the LG charger 1.2a out of the box.does this phone have two different out of the box charger..thanks..
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It's the calibration. Happens to me too sometime. Drops rather fast to 95%, then goes stable around 89%. Just leave it on charge for an extra 45 minutes or so, then let the battery die down to at-least 10% before charging again. Not exact science, it's just what I do.
Hi all, brand new but I've been a lurker of the Tmo s6 edge forums.
Anyway here's the predicament. I got my S6E yesterday set it up, used for the rest of the day with no qualms.
When I went to put it on the charger it was at 7%, i thought to myself, I'll use an Apple 5W charger for a slower charge throughout the night.
I figured the slower, low powered charge will be better for the battery.
As it was charging it stopped in the middle of the night at 20%. From there, the phone constantly went from Charging, not charing, charging, not charging; repeatedly until I woke up to discover it at 7:20AM. I plugged in the phone at 2:30AM. It must have been in this charging on/off loop since 2:45AM or so. The phone was pretty toasty. The screen was on and the phone kept making that noise when you connect/disconnect from the charger.
So my question. will 4ish hours of everything i just mentioned fry the battery?
Edit: By fry I mean significantly reduce the overall battery lifetime. The phone seems fully functional.
All that noise and you didn't wake up earlier?
No, I'm sure it'll be fine. I've used Blackberry and older, non-fastcharging Samsung chargers on mine.
Had the same issue on my S3, it's battery lasted four years (gave it to my brother as a gift).
If you really want to check what's happening, get a $5 USB current monitor plug in adapter on ebay. It shows what voltage it's outputting and the current. I noticed that my old AT&T Note 3 OEM charger's voltage was actually high at 6V or so. This is to charge the device faster, but it didn't work well with any other devices or even portable battery packs.
When I go to sleep at night, I usually leave my phone plugged in until I wake up. I need my phone to have a full battery when I awake, and this is the only option that I know of. I was wondering if there is a way to force the phone to charge a little more slowly so that it isn't sitting plugged in on the charger with a full battery for a few hours until I wake up, as I understand this can damage your battery and reduce longevity. Anyone have any suggestions?
Maybe you could use a low amperage charger?
With original charger (1.2A if I'm not wrong), it took nearly 6h for my phone to fully charge (while it was new and on factory software). Even the charger is declared as 1.2A, charging current never went over 700mA so you can safely leave it on charger, with no worries... Devices do have a overcharge protection, and simply will stop charging second battery sensor gives "Full" state (you can test that with Ampere - you'll get the charging current and see that even after 100% is reached, battery continues to charge for a while, until "Full" state is set by the sensor). Battery quality will deteriorate no matter what you do - they are made to survive some number of recharging cycles and that's it - mine suddenly started loosing capacity fast, after 2.5 years (or around 1000 cycles), out of blue, and you can just replace it. Same story with other phones I have/had: simply, after 2.5-3y their batteries start loosing capacity rapidly.
I would not recommend weaker charger (under 700mA) because our device has 250-400mA drain during idle, and if you want your phone to be full same moment you're awake, you may get a nasty surprise of "Charging" status Anything around 1A is more than enough.
Thanks so much! That answers my question.
Is it safe to leave the phone plugged in 24/7 with "protect battery" on, which limits max charge to 85%?
Not a good idea. A power surge or near lightning strike could fry it. Rather pointless to leave it perpetually plugged in.
blackhawk said:
Not a good idea. A power surge or near lightning strike could fry it. Rather pointless to leave it perpetually plugged in.
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I see. What about leaving it charging overnight while I sleep? Does it hurt the battery to have it plugged in while it is at 85% with "protected battery" on in the same way that it hurts to have it plugged in when it is at 100%?
A 40-72% charge is better; Li's love frequent midrange power cycling. 85% is ok but 80% or lower be better. Do what best suites your needs.
Batteries aren't a big deal to replace. I now replace my heavily used N10+ battery about every year now as a matter of routine maintenance.
However a battery failure is a big deal and seriously damage the phone. Any battery swelling (rear cover) is a battery failure, replace immediately.
blackhawk said:
A 40-72% charge is better; Li's love frequent midrange power cycling. 85% is ok but 80% or lower be better. Do what best suites your needs.
Batteries aren't a big deal to replace. I now replace my heavily used N10+ battery about every year now as a matter of routine maintenance.
However a battery failure is a big deal and seriously damage the phone. Any battery swelling (rear cover) is a battery failure, replace immediately.
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I see. Too bad Samsung didn't choose 80% or make it selectable.
grayson73 said:
I see. Too bad Samsung didn't choose 80% or make it selectable.
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Like I said it's not a big deal. I just fast charge for 10-20 minutes when convenient.
You could put on a timer switch if it really bugs and slow charge it.
Why such concern ? Been charging all my phones since 2012 all day long on, during daytime, none of them was affected. Battery still same, last like new. Many of them still in use by my family members.
Example, I behaved like this to phones for around 1,5 - 2 years, then I got new one. So not just tiny short period of time.
Ing.King said:
Why such concern ? Been charging all my phones since 2012 all day long on, during daytime, none of them was affected. Battery still same, last like new. Many of them still in use by my family members.
Example, I behaved like this to phones for around 1,5 - 2 years, then I got new one. So not just tiny short period of time.
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Oh really? That's good to know. I thought fast charging, charging to 100%, or leaving it plugged in at 100% would degrade the battery.
Never actually carried about this, lucky me maybe, wait for other oppinions or exp.
make sure that it doesn't heat up. rest of it not affect too much.
I always charged my smart phones whole night.
Never faced any problem.
sunyakram said:
I always charged my smart phones whole night.
Never faced any problem.
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Higher cell voltage degrades the Li faster.
They are rated by full charge cycles; discharge until shutdown to 100% charged is a cycle.
Most have a rated life of 200 or so cycles.
High storage/use temperatures also can effect it's service life greatly as can rapid discharge cycles.
In any event when a Li reaches 80% of its original capacity it is degraded and should be replaced before it fails (which could destroy the phone).
On my heavily used N10+ I get about a year to 1.5 years of usable service life per battery.
Just replace the battery once it's degraded and otherwise don't worry about it if so inclined. Don't expect a 3 year service life though if it's charge cycle is fully or near fully cycled daily.
Leaving the charger H24 is less unsafe with the 85% limit enabled but it is not totally safe.
After the first charge starting the discharge and automatically the recharge. The result is the use of more number of recharging and the batteries doesn’t support an infinite number of this.
This worse if you use fast recharge, when I have to leave in charge all the night I use an old 5V 500mA charger.
Lightning strike... poof.
My S21FE half ended life yesterday, finished call and then died. Always on charger while in office. Startup possible but after Samsung logo always restart then loop. After 7 loops stays off. Sent to provider for claim. Maybe it is not related to battery, but you never know. Charging not working, no reaction after plug of the charger, even while turned off.
Ing.King said:
My S21FE half ended life yesterday, finished call and then died. Always on charger while in office. Startup possible but after Samsung logo always restart then loop. After 7 loops stays off. Sent to provider for claim. Maybe it is not related to battery, but you never know. Charging not working, no reaction after plug of the charger, even while turned off.
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That sucks.
Hardware failure of some type. Bootup requires a lot of current so it maybe the battery.
Sounds more like a mobo failure...