[Q] Charging M8 - power cycling? - One (M8) Q&A, Help & Troubleshooting

I usually charge my HTC One M7 phone overnight and I just got a new M8. The T-Mobile rep told me that overnight charging kills the battery and that it's better to let the battery die down to 0% and then recharge. Is this true?

Draining the battery is not good for it. Better to charge with some juice left in it. I let mine die once a month only.
Sent from my LG-D800 using XDA Free mobile app

Johann12911 said:
Draining the battery is not good for it. Better to charge with some juice left in it. I let mine die once a month only.
Sent from my LG-D800 using XDA Free mobile app
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Is it bad to keep it plugged in when it's at 100%? Will that shorten the battery life over time?

limache said:
Is it bad to keep it plugged in when it's at 100%? Will that shorten the battery life over time?
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It's no good to leave it plugged in for days and days keeping it at 100%. Its also no good to let it drain to 0%.
Charging overnight is fine, it cuts off the charger when it reaches 100%. Best practice is to have it drain no lower than 50-75% daily.

Related

Discharging battery....

Need a few tips to discharge my battery faster after I wipe stats...battery life has sucked since Ive had this phone(still a great phone) just need 2 improve my battery life..any help will b appreciated
Sent from my HTC Vision using XDA Premium App
bnoot said:
Need a few tips to discharge my battery faster after I wipe stats...battery life has sucked since Ive had this phone(still a great phone) just need 2 improve my battery life..any help will b appreciated
Sent from my HTC Vision using XDA Premium App
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You should never fully discharge a Li battery; to recalibrate, wait until your phone is fully 100% (not just until the LED turns green), wipe stats and then unplug and use as normal. It will take a few days for the OS to recalibrate but after a few cycles of dropping it to around 15-20% and bringing it back up to 100%, you should see an improvement.
Sent from my HTC Vision using XDA App
OriginalGabriel said:
You should never fully discharge a Li battery; to recalibrate, wait until your phone is fully 100% (not just until the LED turns green), wipe stats and then unplug and use as normal. It will take a few days for the OS to recalibrate but after a few cycles of dropping it to around 15-20% and bringing it back up to 100%, you should see an improvement.
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Exactly right. Be careful, some people will tell you to discharge until the phone powers off. But this is risky, and not necessary. Over-discharge of a Li-ion battery can result in the battery no longer taking a charge, forcing replacement of the battery or recharging using a special battery meter with a "boost" function, which most people do not have access to (often easier just to get a new battery). The batteries have a safety circuit which is designed to prevent over-discharge, but its not 100% reliable. People on here have reported dead batteries on the Vision and other phones (after letting the battery discharge until the phone powered off), probably for this reason. Plus, the battery meter on phones are really not all that accurate to begin with, so discharging fully is not going to be any more accurate than discharging to a safe 15-20%. So zero reason to discharge the battery fully.
Ok...thank both of you 4 your information
Sent from my HTC Vision using XDA Premium App

Best way to charge battery

Kinada new to this. But
It is ok to charge the Samsung stock gsm battery at any percentage or should I wait till it low to charge it??
Like if I'm at 30% at night and need full battery for the next day, should I drain it to 10% ish or just let it charge from 30%??
Would it shorten the length of the battery or harm/damage the battery in any way??
Sent from my Galaxy Nexus using xda premium
airkenada said:
Kinada new to this. But
It is ok to charge the Samsung stock gsm battery at any percentage or should I wait till it low to charge it??
Like if I'm at 30% at night and need full battery for the next day, should I drain it to 10% ish or just let it charge from 30%??
Would it shorten the length of the battery or harm/damage the battery in any way??
Sent from my Galaxy Nexus using xda premium
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doesnt matter with lithium.
Samsung Galaxy Nexus uses Li-Ion battery. So it doesn't matter if u charge it any way u like.
follow this for tips: http://lifehacker.com/5875162/how-often-should-i-charge-my-gadgets-battery-to-prolong-its-lifespan
Does leaving the phone plugged into the charger all night degrade the battery?
creeve4 said:
Does leaving the phone plugged into the charger all night degrade the battery?
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yes it does.. overcharging the battery is not good. it may decrease its capacity. it is always recommended to unplug it when your phone is fully charged
- It is best to keep the battery between 20-80% and never fully discharge it except for the first time just for calibration
- It is preferable to use the pc for charging (slow charging is better)
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
mohaimed said:
yes it does.. overcharging the battery is not good. it may decrease its capacity. it is always recommended to unplug it when your phone is fully charged
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What you'd stated is true but doesn't the galaxy nexus have its own safety for this where it stops charging and runs off the battery til it drops to ~98-96% and then charges back up ?
Sent from my Galaxy Nexus using xda premium
DynamicRam said:
- It is best to keep the battery between 20-80% and never fully discharge it except for the first time just for calibration
- It is preferable to use the pc for charging (slow charging is better)
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Is slow charging really better? In my experience, when charging from AC, the battery lasts longer than when I charged it from my laptop.
fifarunnerr said:
Is slow charging really better? In my experience, when charging from AC, the battery lasts longer than when I charged it from my laptop.
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It should be better because its cooler also its more steady than an AC Charger
I just charge it at night before sleeping and unplug it when I wake up..taught the battery stop overcharging??
Sent from my Galaxy Nexus using xda premium
creeve4 said:
Does leaving the phone plugged into the charger all night degrade the battery?
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No, the charger will stop charging when the battery is full. If it didn't, an explosion would awaken you at night....

[Q] Questions about battery life.

-Does keeping the phone plugged in via USB (when battery is at 100%) decrease battery life?
-Approximately how long should the battery last if the phone idles? If the screen is on 24/7?
-Are these batteries any good compared to the stock one?
IamaznX said:
-Does keeping the phone plugged in via USB (when battery is at 100%) decrease battery life?
-Approximately how long should the battery last if the phone idles? If the screen is on 24/7?
-Are these batteries any good compared to the stock one?
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1.) Plugging in the phone while charged does decrease the battery life as you can only charge a battery for lets say 1000 cycles or so.
2.) Battery life depends on how long you use your phone, your ROM so I couldn't say. But my phone with the screen on lasts about 8 hours (SGH-T989)
3.) Check the reviews, it has five stars so I would assume that the battery is pretty good.
nivekx9 said:
1.) Plugging in the phone while charged does decrease the battery life as you can only charge a battery for lets say 1000 cycles or so.
2.) Battery life depends on how long you use your phone, your ROM so I couldn't say. But my phone with the screen on lasts about 8 hours (SGH-T989)
3.) Check the reviews, it has five stars so I would assume that the battery is pretty good.
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Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
IamaznX said:
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
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Ehh I wouldn't think so...unless something is waking it up every now and then like a app or something...I normally loose about 10% if that if I let it sit over night
Sent from my SAMSUNG-SGH-T989 using xda premium
IamaznX said:
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
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Not at all. I would use a battery monitor app to see what's draining the battery because that's very excessive drainage.
I can't imagine how much it drains when you're actually using it...
what rom/kernel are you using?
I agree with what others here have said, but just to add a little something, I heard that for the best battery "life" its best to try and keep it between 20% to 90%. Don't quote me, I heard it on one of those YouTube tech channels, I wonder if that is true. I always thought that it was best to completely kill the battery and then fully charge it.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
inocent3 said:
I agree with what others here have said, but just to add a little something, I heard that for the best battery "life" its best to try and keep it between 20% to 90%. Don't quote me, I heard it on one of those YouTube tech channels, I wonder if that is true. I always thought that it was best to completely kill the battery and then fully charge it.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
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That's for a new battery. Only for a couple full cycles. Else it's best to charge when you hit 15-20 and charge uninterrupted to 100.
Sent from my SGH-T989

Charging at night?

Is it safe to charging at night, if it's not, what will it do to the battery?
Customer service always tells me to charge it just for 3-4 hours, but I have difficulty with that since I get home late and I leave early, but I still manage to get a full battery without it charging overnight but I would just like to know
Sent from my SGH-M919 using xda app-developers app
kevinrubio1 said:
Is it safe to charging at night, if it's not, what will it do to the battery?
Customer service always tells me to charge it just for 3-4 hours, but I have difficulty with that since I get home late and I leave early, but I still manage to get a full battery without it charging overnight but I would just like to know
Sent from my SGH-M919 using xda app-developers app
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I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
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Hmm that's weird, but from the sounds of that, I don't think it's healthy for the battery to charge for a long time
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lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
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Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
lalec said:
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
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That thread is perfect! I would use it but I need notifications to notify me but I did use it for a night! Amazing difference
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lalec said:
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
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I do use that guide. My signal is terrible and is what drains my battery. I really don't believe that is related to any app running wild and draining my battery because from completely dead to 100% takes about 2.5-3 hours with me using it, WiFi on, brightness at 100%, etc; I can also easily get over 2 days without a charge with light use... It would be more but my lack of signal accounts for an almost 1.5% per hour idle drain. Good signal areas I'll drain less than .5% per hour with no use/app changes outside of having a strong signal.
Weird...
When your phone charges to 100%, your phone knows to stop charging, mine always stops charging when is says "reached 100%". I just leave it on the charger and it stays steady at 100 until i take it off.
It shouldn't effect the lithium ion, either.
I thought that was the special thing about lithium ion?
They don't wear down?
Idk, could be wrong.
Sent from my SPH-L720 using xda app-developers app
Overnight charging is a no no. More info here http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
I always leave it charging when I fall asleep. And if, IF I wake up in the middle of my sleep and see that it's at 100% I'll unplug it. If I don't wake-up I'll just leave it charging until I wake up. Been doing that since before I even had a smartphone and never had any problems. Then again I do switch phones every year
Sent from Flip's Galaxy S4
lordcheeto03 said:
I do use that guide. My signal is terrible and is what drains my battery. I really don't believe that is related to any app running wild and draining my battery because from completely dead to 100% takes about 2.5-3 hours with me using it, WiFi on, brightness at 100%, etc; I can also easily get over 2 days without a charge with light use... It would be more but my lack of signal accounts for an almost 1.5% per hour idle drain. Good signal areas I'll drain less than .5% per hour with no use/app changes outside of having a strong signal.
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A bad signal will definitely drain your battery. When I know I am in an area without signal and will be there for a few hours I turn my phone's power off so I have some battery left when I need it.
Sent from my SGH-M919
I've always charged my phone at night and have never had usages with the battery.
Sent from my SGH-M919 using Tapatalk 2
Bought some cheap batteries on Amazon, I charge whenever I want, however I want (typically overnight, all night). If I ruin the battery, so be it, I can just pop it out and replace it in 5 seconds. This is the real advantage of having a removable battery.
I've always left my smartphones on the charger overnight. Seven years going and haven't had any issues. I do tend to replace my battery after 9-12 months of use though.
lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
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This sums it up. Per the article linked earlier in the thread about charging li-ion, it sounds (relatively) trivial for the device manufacturer to implement a charging cut-off after the cells reach a specific voltage level. Once the cells drop to a certain level they're safe to charge again, and the cycle starts over. I don't imagine it's great for the battery to sit on that recharge cycle, but it's not going to over-charge and become a fire hazard.
I imagine external battery chargers might be a little different. That $3 battery & charger from eBay isn't going to have the same safety regulations as a major manufacturer like Samsung.
norml said:
Overnight charging is a no no. More info here http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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An interesting tidbit from that article.
Li-ion does not need to be fully charged, as is the case with lead acid, nor is it desirable to do so. In fact, it is better not to fully charge, because high voltages stresses the battery.
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I'm pretty sure a $600 phone can handle any of your charging blunders. Relax kid.
We're not dealing with Nokia's anymore.
Sent from my SGH-M919 using xda app-developers app
Avoiding full charge has benefits, and some manufacturers set the charge threshold lower on purpose to prolong battery life.
Lithium-ion does not need to be fully charged; a partial charge is better.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
tikay00 said:
I'm pretty sure a $600 phone can handle any of your charging blunders. Relax kid.
We're not dealing with Nokia's anymore.
Sent from my SGH-M919 using xda app-developers app
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All the other comments say not to charge over night...
Sent from my SGH-M919 using xda app-developers app
I charge mine overnight with no issues.
Sent from my TI-82 using XDA Premium
I just called Samsung and they highly recommend me to not charge it over night
Sent from my SGH-M919 using xda app-developers app
norml said:
Avoiding full charge has benefits, and some manufacturers set the charge threshold lower on purpose to prolong battery life.
Lithium-ion does not need to be fully charged; a partial charge is better.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Click to collapse
I get the general concepts that the article presents, but it doesn't really address any advances in charging methodologies that newer devices could add. It reads like it was designed for 'dumb' devices such as cordless phones, rechargable power tools, etc. For instance, it says never to charge with the device powered on. Yet Windows Phones (at least my Lumia 800) won't charge with the device off...plugging it in automatically boots the phone up.
Our phones obviously have more advanced power circuitry, such as being able to hold the power button in and have the device power cycle no matter what state the phone is in, and I assume it applies to other parts of the phone as well.

Htc 10 quick charging

Hi there,
I just got my phone and I thought the quick charging should charge my phone fron 0-80 in about 35 minutes...
I turned off the phone and from 0-35% took around 32 minutes which does not sound right...
Is it because the phone was turned off?
Or something needed to be set? Its the factory default charger.
Thanks in advance
Sent from my HTC 10 using XDA-Developers mobile app
Did you literally just get it and plug it in, or did you run it all the way down to 0% and then plug it in?
holz75 said:
Did you literally just get it and plug it in, or did you run it all the way down to 0% and then plug it in?
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I did literally wait to go down to 0% and then I plugged in
Sent from my HTC 10 using XDA-Developers mobile app
Well, the first thing you'll probably hear around here is never let it discharge all the way to 0% because it's bad for the battery. I'm guessing that, if you did let it go all the way to 0%, it might take a little bit to get going again, so the charging time would indeed be longer.
holz75 said:
Well, the first thing you'll probably hear around here is never let it discharge all the way to 0% because it's bad for the battery. I'm guessing that, if you did let it go all the way to 0%, it might take a little bit to get going again, so the charging time would indeed be longer.
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I am not sure why would it be bad for the battery?
Sent from my HTC 10 using XDA-Developers mobile app
If you Google something like, "lithium ion battery discharge 0%", you'll find all types of reasons why it's possibly harmful to your battery.
Nope.
Mine charges to about 40% in 30 Minutes. That's normal.
http://forum.xda-developers.com/showthread.php?p=66920323
Don't worry about that 0% nonesense.
Smartphones are Idiotproof. You can't do anything wrong to damage them with normal usage.
Yes of course it's Bad for battery life (long term) if you drain it to 0% every day but until 4% is completely fine.
Why is it Bad to drain a battery to low? Take a look at the battery Voltage Graph in my Charging Chart. Charging is even more Voltage than discharging. If you use and App to check battery Voltage you will see about 3.7V at 4% and it Drops to 3.6.... 3.5..... 3.4V the closer it gets to 0%
Batteries don't like that.
Feels like my nexus 6 charger charges faster than stock HTC 10 charger
Don't just tell us about your feels.
Install the batteryLog app and let it run for a charge, then Export to file and show the csv here.
https://play.google.com/store/apps/details?id=kr.hwangti.batterylog
zimilaci said:
I am not sure why would it be bad for the battery?
Sent from my HTC 10 using XDA-Developers mobile app
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OK, quick look.
A Li_ion battery has a life cycles 400 - 500, that means battery can go from 100% to 0% normally 400 - 500 times, after that, battery will start to get problems, e g, you see it's 100% battery but in 30 minutes normal usage it goes to 0%.
If you charge the battery to 100%, then recharge it only if it gets down to 0% every single day, then after one year it's very likely you'll face the battery issues.
Yeah.... so if you recharge your phone not when it's at 0% but at 50% you will have around 800-1000 cycles...
AND you charge your phone about twice as much as the other guy who only charges at 0% so in the end you both end up with the same battery capacity after a year xD
P.S 400-500 life cycles means until the battery has 75% of its original capacity left, and not untill it's totally unuseable
Haldi4803 said:
Yeah.... so if you recharge your phone not when it's at 0% but at 50% you will have around 800-1000 cycles...
AND you charge your phone about twice as much as the other guy who only charges at 0% so in the end you both end up with the same battery capacity after a year xD
P.S 400-500 life cycles means until the battery has 75% of its original capacity left, and not untill it's totally unuseable
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Exactly!

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