Database Develop

Does leaving plugged in harm battery?

I turn my phone on Airplane mode and unplug at night while I'm sleeping.
BUT! When at work and at home at other times, is it bad to leave it plugged in 100% of the time? (I.E. does it decrease total battery life over a few years to be constantly charging.)
Or is it better to unplug ASAP when it hits 100% and let it drop to 20-30% and recharge-unplug-recharge-unplug etc? (If so, how much of a difference would this make?)
And does it matter USB vs AC source? I know USB is half the amps, so this could have an effect too?

Honestly, the battery is going to deteriorate a bit either way over a year time span. It is probably best if you just replace the battery every year.

Paul22000 said:
I turn my phone on Airplane mode and unplug at night while I'm sleeping.
BUT! When at work and at home at other times, is it bad to leave it plugged in 100% of the time? (I.E. does it decrease total battery life over a few years to be constantly charging.)
Or is it better to unplug ASAP when it hits 100% and let it drop to 20-30% and recharge-unplug-recharge-unplug etc? (If so, how much of a difference would this make?)
And does it matter USB vs AC source? I know USB is half the amps, so this could have an effect too?
Click to expand...
Click to collapse
Doesn't matter. All you need to really be worried about is that you leave it on the charger long enough to get a true 100% charge, and you don't always put it on when at 80%, try and run it down from time to time to 10% type thing.
If you leave it on the charger 24/7 for a year, it will have no real effect on the battery that a year of use wouldn't do, and you might actually come out ahead since battery life times are based on charge cycles... when on charger, as you are asking about, there would be virtually no charge cycles.

pjcforpres said:
If you leave it on the charger 24/7 for a year, it will have no real effect on the battery that a year of use wouldn't do, and you might actually come out ahead since battery life times are based on charge cycles... when on charger, as you are asking about, there would be virtually no charge cycles.
Click to expand...
Click to collapse
Ooooh, interesting... Did not know that. I thought that leaving it charging was the worst case possible.

But let's be honest.
How long do you think you'll keep the phone?
I've never had one more than a year...

Amdathlonuk said:
But let's be honest.
How long do you think you'll keep the phone?
I've never had one more than a year...
Click to expand...
Click to collapse
Til the Nexus Two comes out bro
[Edit]: Well, my thinking is how BAD could this affect it. Like leaving it plugged in all the time = 50% battery capacity in 4 months type of thing. I guess that is not the case though eh?

Paul22000 said:
I turn my phone on Airplane mode and unplug at night while I'm sleeping.
BUT! When at work and at home at other times, is it bad to leave it plugged in 100% of the time? (I.E. does it decrease total battery life over a few years to be constantly charging.)
Or is it better to unplug ASAP when it hits 100% and let it drop to 20-30% and recharge-unplug-recharge-unplug etc? (If so, how much of a difference would this make?)
And does it matter USB vs AC source? I know USB is half the amps, so this could have an effect too?
Click to expand...
Click to collapse
To add to what pjcforpres said, I would suggest topping off the battery a couple times a day rather than always letting it run down to 20-30% (deep cycling) the battery. Deep cycling is worse for Li-ion batteries. It causes more heat for longer periods of time when you do charge. I would only discharge completely once every few months to keep the battery calibrated.
My personal habit is to top off frequently. If I'm at home, I'll let it charge to a true 100%, like pjc said, then take it off the charger and leave it off till it hits 75-80% and top it off again.

i can add to this discussion what i've learned about lithium-ion batterys
having it plugged in, while it is being taxed heavily (playing games) and already at 100% is a bad idea, then i discharges and recharges all over the time.
When it isn't full and you plug it in to top it off it shouldn't really do any harm, as long as you disconnect it when it's at 100%.
Emptying it completely also lowers overall capacity, 10% is a good threshold when to charge it.
When leaving it off to store it for a while, store it with around 70-75% in the battery. Storing it fully charged also lets capacity down.

creepinshadow said:
i
Emptying it completely also lowers overall capacity, 10% is a good threshold when to charge it.
Click to expand...
Click to collapse
I thought you WANTED to do this? I've heard calibrating it is running it until it turns OFF?

Paul22000 said:
I thought you WANTED to do this? I've heard calibrating it is running it until it turns OFF?
Click to expand...
Click to collapse
I respectfully disagree with creepinshadow's suggestions. I've read up on lithium ion batteries considerably in the last few years. 10% is not a good threshold to always charge your battery from... that's deep cycling and was great for nickel metal hydride, but isn't good for lithium ion. That said, there's no way for it not to get that low from time to time if you're away from your charger for extended periods and I'm sure it's not going to destroy your battery as fast as one might think.
As for storage, the I charge (or discharge) mine to 40-45% then pop it into the fridge for storage. Read that in a long article explaining how to treat li-ion batteries.
Like you said though, a full discharge for calibration is running it till it turns off then plugging it in while keeping it off until an hour or so after the light turns green.

I've heard many people say that leaving any device that has a battery plugged in won't harm it as long as you're consistant with the charge cycles. Like only plug in your phone when the battery life is >15% and charge it to 100% before unplugging it.
I get into trouble there, because (for instance) say I'm going to be going into the mall for a while and my battery is at 30% and it's going to take me 30 minutes to get the mall (I live in Northern Virginia, traffic is a *****, haha). I'll hook up my phone while I'm in the car just to have extra battery life while I'm away from a charger.

good question, i wanted to know the exact same thing so good to see someone else ask. got the answers i needed.

Look guys... the reality is that this discussion is really just academic. Take my recommendations, for example. It would be ideal if everyone could do what the study I read suggested, but it's not practicable to always top off the battery and not deep cycle the battery frequently. That being said, I'm sure the difference in battery life wouldn't be apparent for a very long time. I can't imagine phone and battery manufacturers haven't thought about this. So...while I've posted my "recommendations" based on that study... just enjoy your phones.

A new battery cost <$50 i'm sure... If you left your phone plugged in over night, every night for a year it probably won't hold a charge better than someone that unplugs in once it reaches 100%..
I personally would rather not deal with always worrying about over charging it and IF i still had the phone when the battery needs to be replaced, just replace it.
In the past 16 months i've had the Touch Pro, Palm Treo Pro, BB Bold & now the N1.. so i never have a phone long enough to even care lol.

I guess that's true. We can always replace the battery, unlike the Fruit people!
But I was just worried that the damage happened quickly. But I guess it's 9-12 months before seeing any real effects anyway.

scottypimpin636 said:
A new battery cost <$50 i'm sure... If you left your phone plugged in over night, every night for a year it probably won't hold a charge better than someone that unplugs in once it reaches 100%..
I personally would rather not deal with always worrying about over charging it and IF i still had the phone when the battery needs to be replaced, just replace it.
In the past 16 months i've had the Touch Pro, Palm Treo Pro, BB Bold & now the N1.. so i never have a phone long enough to even care lol.
Click to expand...
Click to collapse
Actually, it's only $25 from Google.

uansari1 said:
Actually, it's only $25 from Google.
Click to expand...
Click to collapse
Link?
I don't see an accessories page at www.google.com/phone
[Edit]: lol nevermind, you have to click "Get your phone" to get accessories haha

Paul22000 said:
Link?
I don't see an accessories page at www.google.com/phone
Click to expand...
Click to collapse
Lol... click on the link you posted, click "Get Your Phone" and it's listed right below the Dock!

uansari1 said:
Lol... click on the link you posted, click "Get Your Phone" and it's listed right below the Dock!
Click to expand...
Click to collapse
Yeah just saw that. Kind of silly to put it there since people looking for accessories already HAVE a phone. Silly Google

Oh, so by the way, this page brings up a good point:
http://www.google.com/support/android/bin/answer.py?hl=en&answer=175535
Charges at 480mA when installed in Nexus One phone connected to USB, at 980mA when installed in phone connected to charger
Click to expand...
Click to collapse
Is there any difference in charging from USB vs AC adapter in terms of how it affects overall battery life?

Crazy Battery Story, nice outcome

Ok since I've had my Thrill, the battery sucked...HARD. Upgraded to every GB and kernel..still sucked. Went over to the Rogers kernel the day it was released. Still have is stock, just rooted.
Fast forward a few months to Monday afternoon, while on my way to a meeting and using the GPS, I noticed that my phone was near dead. Noticed that it was indeed plugged to the car charger, but not charging. tired the usb to my laptop and nothing. Decided to check the port, I smelled it and BAM!!, the smell of burnt electronics.
At this point I'm sure that the phone is history after the charge goes. After a few tries I wiggle and wiggle and was able to some how find a sweet spot at an angle to get it charging. After I got to my meeting, I left it charging at that magical angle til I got back.
Got back unplugged it, fully charged.
OK HERES THE CRAZY PART. Figured I would have to buy a new phone, so I left it in my pants pocket and just went to bed around 11pm. Got the next day, never looked at it figuring it was dead by now as usally until around 6pm Tuesday.
Amazingly the battery was not dead, but the level was still 80%!!! ...Like WTF.
On top of that, the charging works perfect now, and the damn thing is still running off a charge from Monday and its Wednesday morning. Battery level at is 60%. Wifi anf GPS on the entire time, and I''ve been using it all day.
A BLESSING FROM THE LITHIUM GODS!!!

This is very strange....
And so I have spoken it.. and so it shall be.

Cool story, bro
Sent from my LG-P925 using xda premium

Talk about luck cool post, wont be trying it myself. More info plz very interesting. +1
Sent from my LG-P925g using XDA App

That is very bizarre about the battery. Great story tho. My battery life improved a lot since the upgrade to GB.

i find if i charge it with the phone on to full then turn the phone off charge for an hour wile its off it last a whole lot longer

[Q] X gets hot while charging? normal?

today is the 4th day with my Moto X...and i'm a little worried about my phone because of my battery issues.
the first day i got my phone, it came with 50% of charge and after some usage it got down to 14% but then, suddenly it dropped to 3%. I have some experience with this issue in my previous android phone, so i just tried a charge cycle and it is pretty much ok now.
BUT THEN
yesterday, my wifi was on and i was charging my phone and it went really hot, according to Antutu Benchmark the temperature was 45.1°C (113.18°F)... i quickly unplugged the phone, and it cooled down within 3 mins..
now today morning,
i made the phone shut down itself by draining its battery, kept on charge, i was not ussing it, only wifi was on and the temprature went 44°C (the charge was around 30-40%).. i left the phone as it is.. and then when the phone charged up to 92% it got better (37°C)
IS THIS ALL NORMAL? DO YOU GUYS FACE THIS?
if not, i'll have to replace this, so please help...
apart from this, i noticed that the device runs for a pretty long time at 1% charge

My phone definitely gets warm when charging. I don't have any apps to tell me the exact temperature, but it doesn't scare me. 45 °C is far below what the electronics can handle, and I wouldn't be concerned, it is well inside normal operating range in my opinion.

My battery is currently 102°f on network surfing the net unplugged. I've seen it as high as 113° and have not had any issues with the battery. I'm still getting 24+ hours between charges.

garciaw said:
My phone definitely gets warm when charging. I don't have any apps to tell me the exact temperature, but it doesn't scare me. 45 °C is far below what the electronics can handle, and I wouldn't be concerned, it is well inside normal operating range in my opinion.
Click to expand...
Click to collapse
The Tallest said:
My battery is currently 102°f on network surfing the net unplugged. I've seen it as high as 113° and have not had any issues with the battery. I'm still getting 24+ hours between charges.
Click to expand...
Click to collapse
have you guys seen your X go as hot as 54°C??
its a moth with my Moto X, and it gets hot REALLY EASILY, like do a little bit video recording or take some photo spheres or maybe just play candy crush while charging it goes 48°C
and once... i kept a lot of files for upload on drive.. and it was on charge... nothing else...i kept the phone aside...and within 10mins it was hard to hold.. 54°C
i am seriously worried.. but not willing to go for a replacement, since the service in my country is too bad.. any help? :crying:

Abhinav Valecha said:
have you guys seen your X go as hot as 54°C??
its a moth with my Moto X, and it gets hot REALLY EASILY, like do a little bit video recording or take some photo spheres or maybe just play candy crush while charging it goes 48°C
and once... i kept a lot of files for upload on drive.. and it was on charge... nothing else...i kept the phone aside...and within 10mins it was hard to hold.. 54°C
i am seriously worried.. but not willing to go for a replacement, since the service in my country is too bad.. any help? :crying:
Click to expand...
Click to collapse
New phone gets hot in the beginning. Mine did and now it doesn't.Also avoid using your phone while charging , IT damages the battery .

DaRkRhiNe said:
New phone gets hot in the beginning. Mine did and now it doesn't.Also avoid using your phone while charging , IT damages the battery .
Click to expand...
Click to collapse
Batteries naturally degrade over time. That simply speeds up the process slightly (light tasks) or slightly more (gaming). I've done it on all my 7 smartphones (including my first from 2011) and all the stock OEM batteries are working to this day.
I've even gamed heavily (when I enjoyed those things..) on my S2 i9100 and iphone 4s and both those phones get awesome battery life to this day. The S2 was even left on a shelf in the garage over an entire winter lol.
It's just the word damages could misguide people so I wanted to clarify.
But charging temperature can vary between two identical smartphones. My first iphone 5 was rather cool to the touch while charging where as the warranty replacement I got (dust under the lens, they swapped it for a new one) I got tends to be warm and even slightly uncomfortable to hold while using the device moderately and charging at the same time (same charger). It's just variance in manufacturing. No two processors are alike, no two batteries are alike.

thanks for your reply everyone... i guess i'll have to live with it..
maybe i'll just avoid using my phone while charging..

Randomly shuts down claiming battery at 0%

About a month ago while hiking I had my Mexus 6 in a zip lock hoping to keep it safe from water (I now realize how stupid that was). With ziplock in my backpack I waded through chest deep water. Later on I opened my bag and to my dismay there was water inside the zip lock. The phone was operational.
I took it home and tested it. Worked fine for the most part. However when I shut it down it would not bit back up for a day or so. And after charging it for 24+ hours it would randomly boot. Basically I couldn't let it run out of battery or it would be unresponsive for a day or two.
Somehow over time this issue was not valid anymore. My phone could now reboot normally.
A couple of days ago I noticed the phone going into shutdown claiming 0% battery even when battery was 40%. It kept galloping numerous times. Open the camera, phone shuts down showing it's out of battery. The battery saver also makes to kick in as it makes its come and the top and bottom bars turn red/orange.
This has happened more than 20 times now. I did not get the battery shutdown when phone has 80%+ battery. But it started as I dropped below that. At 48% it got so bad that after a shutdown, if I restarted phone, it would, then immediately shut down. When battery was 60%+ it would at least start back up and let me use it for a bit.
Now I know I messed up with the zip lock thing but it's there any thing I can do now? Should I try to change the battery? I have changed battery on iPhones before by myself.
Can I somehow calibrate the battery using software?
Attached are screenshots of my battery stats.
I appreciate any help I can get. Thanks in advance!
Sent from my Nexus 6 using XDA Free mobile app

Sorry to hear this is happening, mine started doing the same thing after three months of use. I tried everything, including a trick someone posted of letting it die and charging it only using the quick charger. I use a QI charger and it was completely unacceptable to think that feature couldn't be used. So I contacted Motorola and they just did a warranty on mine and sent me a new one. I had it the next day.

Dacian said:
Sorry to hear this is happening, mine started doing the same thing after three months of use. I tried everything, including a trick someone posted of letting it die and charging it only using the quick charger. I use a QI charger and it was completely unacceptable to think that feature couldn't be used. So I contacted Motorola and they just did a warranty on mine and sent me a new one. I had it the next day.
Click to expand...
Click to collapse
What info did you have to give for warranty. I don't have original sales receipt. Thanks. I will try the same.
Sent from my Nexus 6 using XDA Free mobile app

Question Brand New 10 pro, defective battery?

So I just got a new 10 pro from OnePlus a few days ago. Idk if If the battery is suppose to be this bad or if it's my unit itself. I know battery apps aren't usually super accurate but AccuBattery reports the battery design capacity as 4040ma. It's suppose to be a 5000 ma battery right? I have it set up as half brightness, only cell data active, no wifi, no bt, no NFC, no location, nothing else is on. I hardly use it, literally, maybe read reddit for a little on my lunch breaks. After a 8hr shif it's down to 20% with less than an hour of screen on time, about 45 mins id say. Is this phone this bad with battery? Is it from sitting in storage at OnePlus?, or should I return this?
Just doesn't seem right to me. I had a brand new 7 pro since launch day and that lasted most of the day with location, bt, high brightness playing Pokemon go and had a degraded battery with only 3450ma out of 4000ma left...

Sounds very defective, id return it or claim warranty or something

Lol, AccuBattery probably didn't detect the capacity right. Adjust it manually, give it a few charges (up to 80% for the best results) and then you'll have an ESTIMATE battery health. As for the drain, you may have something running in the background. I'd check that with root and something like FKM to see which process could be responsible.

Thanks to both responses.
I adjusted the design capacity to 5k. Right now it says estimated capacity 2475ma, which with the way it doesn't last even an 8hr shift with almost no use seems right on the dot...
Il try the charging thing and see what the estimate is. But after a week I figured even with the design capacity being wrong that it would estimate it way higher. I know AccuBattery isn't the best way to measure things. Il give it a few days. I still have til next Saturday to return it.
I had a bad habit of charging my 7pro literally every time it dropped below 40% when I was at work every day, so that's probably why that battery degraded so much, and id plug it in when I was driving too. Trying not to ruin this one like that. But it's looking like a return is in order cause with a 1000ma bigger batter than my 7pro, it should last at least what that one did, only you would think being brand new, alot longer...

I'm stupid.. I think I forgot to check the setting for dual cell battery in settings. Now it says 4951/5000. That seems more like it. And weirdly enough it has lasted a lot longer today than yesterday. I restarted a few times this morning. I think you were right about a process draining an absurd amount of battery the last week I've been using it.
Hopefully this will resolve itself before my return period is up, cause other than battery life this phone is pretty awesome so far. It's sad to see not much development on here for it yet. I'm use to seeing so many roms and stuff coming from the 7 pro.