[Q] Slow to Charge - AT&T Samsung Galaxy S II Skyrocket SGH-I727

Just installed Dirty Unicorns (yesterday morning), love it so far. My one problem is it take forever to get to a full charge. It has been charging for over 10 hours and it is only at 87%. I had my phone turned off and when I plugged it in it was at ~0% battery life. Anyone know how what is causing it to take so long or a way to make it charge faster? The charger is the one that came with the phone.

I ran this command: cat /sys/class/power_supply/battery/batt_current_adc
The number I got was 0.
I got the command from this thread.
Edit:Tired it again after restarting my phone, I got 9078 which means it is fast charging. However, it still takes a long time to charge.

Blorkin said:
Just installed Dirty Unicorns (yesterday morning), love it so far. My one problem is it take forever to get to a full charge. It has been charging for over 10 hours and it is only at 87%. I had my phone turned off and when I plugged it in it was at ~0% battery life. Anyone know how what is causing it to take so long or a way to make it charge faster? The charger is the one that came with the phone.
Click to expand...
Click to collapse
Definitely not the norm! Might have to do some battery shopping. You can get them dirt cheap!
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
---------- Post added at 01:30 PM ---------- Previous post was at 01:25 PM ----------
Check for battery deformities. If it looks swelled then your battery could be bad.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

The battery looks normal (no swelling, damage, etc). I tried charging it while it was turned on and it charged fine; from around 50% to 100% in less than 2.5 hrs (was watching TV so I am not sure the exact time). I am going to try killing the battery again and charging it with the phone on (than off) and see how long that takes.

So I don't have an exact time frame for it charging while off but it fully charged within under 8 hours (from dead). However, it still seems to charge much faster when the phone is awake; it took about 1.5hrs to get from ~50% to 100%. I am still confused as to why it charges faster when the phone is on. If anyone has any ideas I would be interested to hear them.

Related

Bump Charging has helped!

ok, so I'm running faux's rom and I have run CM 7. I have tested this a few times and each rom and it seems to help improve battery life.
Since the drivers are screwy I noticed when I charged my phone it would say 100% but I would unplug it and it would drop down to 97% right away. I think the lower number is the accurate one, So the battery really isnt getting fully charged because the phone thinks it is so of course it will die sooner
So what I did was let it charge to 100% then unplugged it, it went down right away. I plugged it back in and it started charging again, in a few minutes it showed 100%, I unplugged and it showed 97%, so I kept repeating this then eventually I unplugged and it was 98%, then eventually 99%. After doing this my battery lasted a lot longer. I usually have keep an extra battery on me and usually have to switch but for the first time my g2x lasted the whole day! So give this a shot.. it could help if you suffer from really bad battery life.
Off topic.
Im From Southern California...be visiting New York on Monday. Good stuff...small world some times.
could unplug, then turn off, plug in and charge while off for a while, the unplug and turn on, then plug back in and let charge. then wipe batt stats and unplug. works for me.
I have one extra battery. I never charged my phone through the charger it came with. I always charge my battery with the portable charger. No doubt the portable charger takes 6-8 hours to fully charge my battery, but on the upside my battery lasts for more than a day.
Sent from my LG-P999 using XDA Premium App
I noticed a similar thing recently. I generally charge my phone overnight while I'm sleeping and use it for an alarm clock. One morning I decided to reboot my phone (my experience is that it needs a reboot every couple of days or various things stop working) before I got up, so I powered it down, still plugged into the charger. I then tried to power it on, but instead of the boot screen I got the device-off charging animation, indicating that it wasn't fully charged, even though it had said 100% before I powered it off. After letting it sit and charge while off for another hour or so, I booted it, and I think I got exceptionally long battery life that day (although my days are all so different it's hard to compare one to another).
I think bump charging does help, but its not good for your battery in the long run
Sent from my LG-P999 using XDA Premium App
c19932 said:
I think bump charging does help, but its not good for your battery in the long run
Sent from my LG-P999 using XDA Premium App
Click to expand...
Click to collapse
well hopefully they fix the driver issues so we wont have to do it too much longer One can hope right? hahaha

Battery taking longer to charge?

Guys,
Was just wondering. how long is the battery taking to charge.. from the DHD, Iphone4, HD2.. they would pop to 100 within a couple of hours or so.. (NORMAL!!!)
This sensation... from 31% to 83% in 2.5 hours.. this is longer than i thought...
Mine took a whole 3 hours to go from 9% to 100%
prateekgujral said:
Guys,
Was just wondering. how long is the battery taking to charge.. from the DHD, Iphone4, HD2.. they would pop to 100 within a couple of hours or so.. (NORMAL!!!)
This sensation... from 31% to 83% in 2.5 hours.. this is longer than i thought...
Click to expand...
Click to collapse
I had similar problem yesterday. It sticked with %89 then I unpluged the charger and rebooted the phone. This time it says %100. Looks like there is a problem with calculation of percentage.
Yeah...mine takes a really long time to charge. I know lithium ion batteries charge slowly after it reaches 80%, but it still seems a lot slower than my previous phone.
yeah.. i rebooted and it was up to 99%.. strange. although it drained very quickly back to 87%... since been 3 hours and its not down to 77%.. so i think it is settling.. maybe an update
Desparately awaiting the root so all these irritating bugs can be addressed
mine took 4 hours yesterday....
Same puy my phone on charging in the afternoon at 10% and 3 hours later it was 75% which is not bad but still slower then usual
I plugged mine into a wall charger at 10 pm last night. At 6 am it was still showing charging and not full. Has to be a software bug. No way it can charge for 8+ hours and not be fully charged.
dubie76 said:
I plugged mine into a wall charger at 10 pm last night. At 6 am it was still showing charging and not full. Has to be a software bug. No way it can charge for 8+ hours and not be fully charged.
Click to expand...
Click to collapse
i agree... i hope this gets fixed...
well, I have started using a new different wire to charge which is not from samsung brand. And it is working very well like the original one.
Did you try to delete battery stats from recovery?
Sent from my HTC Sensation using XDA Free mobile app
Normal
Inf1n1te said:
Did you try to delete battery stats from recovery?
Sent from my HTC Sensation using XDA Free mobile app
Click to expand...
Click to collapse
Normally 3 hour -4 tried to use another charger or cable
Sometimes it takes longer if you charge it with USB on some PCs USB ports.

Charging time

I find this tablets charging time so annoying I'm coming from a zoom with charged so fast compared to my note
Sent from my GT-I9300 using xda app-developers app
Not trying to sound mean, but what's the point to the thread? Is it a question asking how to improve charging times?
BTW, I have a Xoom and I think it's just that it charges a lot faster due to the special charging port.
It will charge much faster if you connect it to 220 volt power sources, rather than 110.
Well I wanted to point out that it is an annoying factor for people to think about when considering buying the tablet but I understand your point
Sent from my GT-I9300 using xda app-developers app
Ummm... wall voltage won't affect it. The device only takes in 5v regardless of the where you plug the charger.
Sent from my Galaxy Nexus using xda app-developers app
Is it just me or do you guys think its slow charging
Sent from my GT-I9300 using xda app-developers app
up to 90% it seems pretty decent. it's that last 10 that seems to take forever. I think the last time I charged it I went from 30 to 90 in 2hrs then the last 10 took another hour.
I ran my note into the ground today and then started a stop watch to see how long it would take to fully charge it. 4.5 hours!!!!
Mine takes way too long to charge also!!
Charging a battery faster leads to more heat which reduces the life of the battery. A very high capacity battery will take longer to charge, all else being equal.
They could have sped up charging by using a non-standard supply voltage/current from the charging cable (like ASUS Transformers, which uses 15v instead of 5v) and thus charging the battery faster. But it would have just got a bit hotter which is not good for the battery.
The battery stores many times more energy than a smartphone battery, yet it only takes about twice as long to charge. I think that's pretty decent.
Given the battery's capacity (7000+mah) and the charge rate (around 2A) I'd say the charge time is right around what I'd expect.
I found the charge a bit slow aswell, but the battery last so long that it balances things out for me, i was disapointed at first until i realised how well the battery performs, regardless what apps i used.
Yeah, Im not too worried about the 4.5hour charging time, my battery lasts me a few days and I can always plug it in before bed and wake up to a fully charged tablet.
I use my tablet during the day and before I go to bed I put it on charge and it's full in the morning. Do some people use their tablet so much in the morning it's out of juice by the afternoon? Give your fingers a rest. My battery lasts me usually all day. Even with looking at YouTube etc.
Sent from my GT-N8010 using xda app-developers app
Slow charging after last firmware update
When I went to bed last night I had 19% power left. Like I normally do, connected my Note to charge overnight. Woke up 7 hours later to find that it had only charged up to 49%. Within 5 hours from a depleted battery, I usually have a full charge. Any thoughts as to why this is the case?
My galaxy note 2 charges faster than my note 10.1. But I have no problem with it.
Sent from my SCH-I605 using xda app-developers app
I just bought my note yesterday, and I have to admit I was so surprised when I charged my note. It took 4hr to go from 7% to 89%. My previous Asus transformer tf300 can go from 0% to full charged in 2 hrs.( Not really big deal but it will be better if Samsung includes high voltage wall charger .
Sent from my HTC One X using Tapatalk 2
Techjourney said:
When I went to bed last night I had 19% power left. Like I normally do, connected my Note to charge overnight. Woke up 7 hours later to find that it had only charged up to 49%. Within 5 hours from a depleted battery, I usually have a full charge. Any thoughts as to why this is the case?
Click to expand...
Click to collapse
It sounds like you may have charged with your note 10.1 turned off.
The note 10.1 like many other tablets needs the tablet to be on while charging so the tablet can regular the rate of charge.
My Note 10.1 charges much faster turned on with WiFi, Sync and GPS disabled.
Mine goes from 25% to 100% in about 3.5 hrs.
from 90% to 100% takes about 45 minutes.
.
The-Captain said:
BTW, I have a Xoom and I think it's just that it charges a lot faster due to the special charging port.
Click to expand...
Click to collapse
So do I (hello, fellow convert! ) and the real reason the Xoom charges faster isn't the port, it's 'cause the charger is 18W and is of a higher voltage (12v/1.5A vs. our 5v/2.1A). (I guess it could be argued that they had to go to a different port to not violate the PDMI spec the Samsung units use, though.)
---------- Post added at 10:58 AM ---------- Previous post was at 10:56 AM ----------
DroidHaxxor said:
It will charge much faster if you connect it to 220 volt power sources, rather than 110.
Click to expand...
Click to collapse
You're being funny, I hope - our charger (just like any other charger released in the last decade) is a Universal Charger (100-240V/50-60Hz) so in any case the output voltage and current is the same no matter where in the world you plug it in.
---------- Post added at 11:04 AM ---------- Previous post was at 10:58 AM ----------
kkretch said:
The note 10.1 like many other tablets needs the tablet to be on while charging so the tablet can regular the rate of charge
Click to expand...
Click to collapse
That's not really true, though, as our tablet is in fact on when you're charging it- if you tap the power button when it's charging in the "off" state, you'll see that battery animation, and that's in fact a fully-running kernel but instead of running "Android" it's a special run mode more like a Recovery. The kernel is in fact running and alive.
FWIW my tablet charges far faster when off vs on, as there's far less simultaneous drain on the battery. Not sure what's going on with yours.
Back to normal
Techjourney said:
When I went to bed last night I had 19% power left. Like I normally do, connected my Note to charge overnight. Woke up 7 hours later to find that it had only charged up to 49%. Within 5 hours from a depleted battery, I usually have a full charge. Any thoughts as to why this is the case?
Click to expand...
Click to collapse
I hadn't completely shutdown my tablet since the update last week. I did so yesterday and now charging times seem to be back to normal. Something new from the update I noticed, when batery gets somewhere around 20% left, the battery indicator changes from green to yellow.
My tablet gets about 10 hours on battery, or more if im just reading the web. The most intensive app I run is candy crush and s-note.
That being said it seems to charge quickly, in about 3 hours. My complaint is the short charging cable it shipped with.
Sent from my GT-N8013 using XDA Premium HD app

How do you handle your battery on a new phone?

Just curious how you handle this, because everybody says something different:
First use: completely charge the battery and then complete discharge, or first complete discharge and the full charge?
I also remember someone telling me that you shouldn't let your battery run completely empty, is that true?
Sent from my Nexus 4 using xda app-developers app
RotasOpera said:
Just curious how you handle this, because everybody says something different:
First use: completely charge the battery and then complete discharge, or first complete discharge and the full charge?
I also remember someone telling me that you shouldn't let your battery run completely empty, is that true?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
just charge it when it needs it, dont worry about what % its at, and dont worry about running them right down... the phone will power down before it gets to a dangerous level for the battery.
dont leave it plugged in all the time when its sat at 100, dont leave it down at 0 and just forget about it for weeks on end...
thats all you need to know
---------- Post added at 12:49 AM ---------- Previous post was at 12:43 AM ----------
in fact... read here, and note the bit about wireless charging! http://gizmodo.com/how-to-take-care-of-your-smartphone-battery-the-right-w-513217256
Just enjoy your phone. Don't make it so difficult.
Sent from my AOSP on Mako
mitchdickson said:
Just enjoy your phone. Don't make it so difficult.
Sent from my AOSP on Mako
Click to expand...
Click to collapse
THIS IS XDA...
I suggest you lower your brightness to 0%, turn off the useless 3 cores, underclock to 100mhz, undervolt to 0.1v, turn off wifi/data/bt and be on airplane mode all the time and enjoy your month long battery life.
peachpuff said:
THIS IS XDA...
I suggest you lower your brightness to 0%, turn off the useless 3 cores, underclock to 100mhz, undervolt to 0.1v, turn off wifi/data/bt and be on airplane mode all the time and enjoy your month long battery life.
Click to expand...
Click to collapse
Rofl
Sent from my Nexus 4
dannstarr said:
...
[/COLOR]in fact... read here, and note the bit about wireless charging! http://gizmodo.com/how-to-take-care-of-your-smartphone-battery-the-right-w-513217256
Click to expand...
Click to collapse
I don't buy the bit about wireless charging. I've used my Nexus 4 with an LG wireless charger daily for almost a year now and haven't noticed any side effects with battery drain or overheating. In fact, I'd argue that the Nexus 4 and my Nexus 7 get hotter when plugged in than they do on the wireless charger. I have absolutely no reservations about using the Nexus 5 on my LG wireless charger when it arrives this week.
RotasOpera said:
Just curious how you handle this, because everybody says something different:
First use: completely charge the battery and then complete discharge, or first complete discharge and the full charge?
I also remember someone telling me that you shouldn't let your battery run completely empty, is that true?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Well the charge and discharge isn't necessary, IIRC that's only for older battery technologies like Ni-Cd batteries (Nickel-Cadmium). On the other side, you probably shouldn't let it discharge all the way since these are Li-Po and it could shorten their lifespan (apparently).
I just plug mine in whenever I'm near a charger.
I'm at work at my desk... its plugged into the charger.
I'm in my car... its plugged into the charger.
I'm at my girls house... its plugged into the charger.
I'm at home replying to xda / android central posts... its plugged into the charger.
This is what I've done with every phone I've had. I only had issues with one battery. I used to have sprint and I had the Samsung Galaxy S2 Epic 4g Touch. After about 8 months the battery got fat (they said it was called a swollen battery at the sprint store) and it kept turning off. They gave me a new battery at the sprint store and I continued with my routine above and never had any other issues with it or any other phones.
drx895 said:
Well the charge and discharge isn't necessary, IIRC that's only for older battery technologies like Ni-Cd batteries (Nickel-Cadmium). On the other side, you probably shouldn't let it discharge all the way since these are Li-Po and it could shorten their lifespan (apparently).
Click to expand...
Click to collapse
this is right on both accounts. you dont need to discharge it all the way, and doing so will reduce its life a little. i recently read about lithium poly batteries and the particular blog i was reading talked about running the battery down to 20% then charging it to 80%
i think when i first get the device i will use it down to 0%, charge it up to 100% uninterrupted and then hopefully keep it within that 20/80 range and probably doing a 0-100 refresh on the first of every month
If you guys want to read some in depth material on charging lithium batteries I would recommend reading this. Very informative.
dannstarr said:
dont leave it plugged in all the time when its sat at 100
Click to expand...
Click to collapse
That's actually the concerning part when I do overnight charging, it's sat at 100 for quite a while!
Salty Wagyu said:
That's actually the concerning part when I do overnight charging, it's sat at 100 for quite a while!
Click to expand...
Click to collapse
It's fine. Phone manufacturers know that people charge their phones overnight. That's why there is a trickle charge mechanism built into all phones nowadays.
u have to calibrate the battery too
Over the last month I've had somewhat of a binge of buying phones from Amazon and returning them for one reason or another and I've noticed that the first 1-3 days of phone ownership are usually the toughest on the phone / battery.
I've owned over the last 2 months (in order):
- S4
- HTC One (x3 as 2 were faulty out the box)
- LG G2
- S4
- N5
I've decided on the N5 as being the best for a number of reasons, but my favourite is price.
I havn't worked out whether it's a combination of new phone = more usage or new phone = requires battery calibration. But the N5 is the only device out the major players that actually made it through day 2 (the day after it came out the box) without a charge midway, infact it's ONLY JUST gone on the charger after some 28 hours of moderate (3 1/2 hours screen on) usage.
My gut feeling is that once you're out the first week just use the damn thing, but the first few charges can make a difference to how quickly the battery feels calibrated. My N5 came with 50% charge out the box, I ran it down to 0% and topped up charge as much as I could the first day. Once I got home I once more let it 0% and then did a full 0-100% recharge. Then my 28 hour experiment started and now I'll just use it as normal, and not worry.
I keep brightness at 50% to enjoy this beauty and I do not give a single **** about the battery.
Charge battery between 20% - 80%
Do not use phone while charging
Unplug charger when battery full

[Q] Proper way of charging Nexus 5

Hi, I just get my Nexus 5 yesterday and may I know how should I charge my phone properly to protect the battery lifespan? I am coming from a rooted Galaxy S5830 and I always discharged it to 0% before I recharged it. Should I do the same with my N5? Furthermore, may I know if the phone is charged, is it safe to left it on the charger for the whole day, will it hurts the battery?
clifftanpeifeng said:
Hi, I just get my Nexus 5 yesterday and may I know how should I charge my phone properly to protect the battery lifespan? I am coming from a rooted Galaxy S5830 and I always discharged it to 0% before I recharged it. Should I do the same with my N5? Furthermore, may I know if the phone is charged, is it safe to left it on the charger for the whole day, will it hurts the battery?
Click to expand...
Click to collapse
charging technology has changed within these past few years. now a days you dont have to worry that youre charging wrong. just plug it in and charge it if needed. it doesnt matter if your phone has 89% left or is at 1%, charge it when its needed and dont worry.
clifftanpeifeng said:
Hi, I just get my Nexus 5 yesterday and may I know how should I charge my phone properly to protect the battery lifespan? I am coming from a rooted Galaxy S5830 and I always discharged it to 0% before I recharged it. Should I do the same with my N5? Furthermore, may I know if the phone is charged, is it safe to left it on the charger for the whole day, will it hurts the battery?
Click to expand...
Click to collapse
Don't force yourself to discharge the phone to 0% like that, just charge it whenever it's needed.
With all batteries - don't overcharge
With lithium ion batteries - about battery dropping below 20%
I learned this when researching laptop batteries, so I assume the same applies for all lithium ion batteries.
Sent from my Nexus 5 using XDA Free mobile app
I have an S2 plugged in 24/7 as an alarm clock. Lol
It still gets good battery life as always.
Special charging techniques and warnings are all wives tales these days.
Charge it when you feel like it and as long as you have to... Like over night. ?
i bump charge all day while im atcwork, and leave it on a charger for all night. same procedure as every single day this year, and still get wonderfull battery life on my phone.
---------- Post added at 02:26 PM ---------- Previous post was at 02:24 PM ----------
jbowwow02 said:
With all batteries - don't overcharge
With lithium ion batteries - about battery dropping below 20%
I learned this when researching laptop batteries, so I assume the same applies for all lithium ion batteries.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
you cant overcharge the battery. your phone will stop charging by itself, and not take in any more current until it needs it.
I charge it when it dies unless it's low and I need it the next. Morning

Categories

Resources