Database Users

charging

do you guys leave your tf plugged in at all times?
Sent from my Transformer TF101 using XDA Premium App

Nope, I unplug it when its fully charged and only charge when there is less than 10% left.

I ordered a USB 3.0 extension cable. One of the reviewers for it said it worked perfectly for his TF. One of the most annoying things I found was not being able to charge from the computer while I used the device. The plug was way too short for the wall. This one is awesome and very cheap. Here is a link:
6ft USB 3.0 A Male to A Female Extension 28/24AWG Cable (Gold Plated)
Quotes from the reviews of it:
"Powers and charges the ASUS Transformer tablet when used with the ASUS Transformer power adapter. Also works as data cable when connected to PC."
"i bought 5 of these for random usb charging extension for mainly tablets - ipad, transformer, galaxy tab. these work perfectly fine and charge at full speed."

It's better for Lithium-Ion batteries to drain little and top-up as often as you can so I plug it in whenever I'm not using it.

frosty5689 said:
It's better for Lithium-Ion batteries to drain little and top-up as often as you can so I plug it in whenever I'm not using it.
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I hear a lot of back and forth about this. Do you have a source for this info? (Not doubting you, just, like I said, I constantly hear people changing their minds on this)
EDIT: Nevermind, maybe I am thinking way back or something. I am finding most info points to "Don't deep drain if you don't have to"... just google lithium ion battery care if you thought the same as me.

I'm curious, i just got my transformer today, in the instructions it says to charge it for 8 hours. But I had full charge after 3 hours. Do I still need to charge it for another 5 hours?
--Jak

wakjagner said:
I'm curious, i just got my transformer today, in the instructions it says to charge it for 8 hours. But I had full charge after 3 hours. Do I still need to charge it for another 5 hours?
--Jak
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yes you should, the battery needs overcharged for premiere usage. but after that don't overcharging your battery in daily usage which the OP is asking.

I charge mine a few hours at night, but unplug it overnight. Since I have the dock, I don't even come close to running out of battery during the day so I leave it uncharged until night time again.
In this case, my Tablet is always 100% and my dock battery drains and gets recharged. I have no idea what my battery life will be later on hehe.

Lithium ion are good for about 300 to 400 charge cycles...usually closer to 300. It is a good idea to charge fully and then simply let it run down. ...i am a tech at a lathe national company. We see trouble tickets from users about batteries on laptops frequently. If the device sits plugged in all the time your battery will last a little over a year before it's about 50% effective. I have no source for my data, just experience.
Hope that helps
Sent from my ADR6300 using XDA App

*sigh* lathe = local
Sent from my ADR6300 using XDA App

Battery Charging taking too long!

The S2 takes forever to charge the battery. Coming fron the iphone 4 i suspect this takes ay laeast twice as long to charge!
Considering the battery performance isnt that great, this is a double whammy!
What do you guus think?
Sent from my GT-I9100 using Tapatalk

Yeah, I noticed the same thing. I'm always charging it when I'm at home to keep it fully charged, in case I'm going out.

charging takes me about 3hours (from empty). It is stanrard time

Same here for charging. Between 3 & 4 hours. But battery life is getting better especially if i disable 3G and wifi
Sent from my GT-I9100 using XDA App

Im using nokia charger 1.2A and HTC charger 1A and also i have 0.7A all of them takes about 3 hours may be hardware bug?

I've been using a BB charger for it, and thought maybe that was the reason. Glad to know it isn't.
Sent from my GT-I9100 using Tapatalk

Yep, I confirm.
Charging takes around 3 hours.
I can use it almost 48 hours before it needs to be charged again. So it is not really annoying.

Stock SGS 2 with official battery charger and a full drained empty battery 3.5 hours to charge to 100% .
jje

tanseerj said:
The S2 takes forever to charge the battery. Coming fron the iphone 4 i suspect this takes ay laeast twice as long to charge!
Considering the battery performance isnt that great, this is a double whammy!
What do you guus think?
Sent from my GT-I9100 using Tapatalk
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About 3 hours here which is fine, charging from the supplied charger connected to electricity mains. Are you charging via the USB connector? It will take a lot longer, something called trickle charge or something like that.

JJEgan said:
Stock SGS 2 with official battery charger and a full drained empty battery 3.5 hours to charge to 100% .
jje
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Click to collapse
Same here... It takes too long to charge...

Same here... It takes too long to charge...
No it takes the normal time but if its to slow for you dont drain it or sell it .
jje

I noticed this when my brother bought the same phone. His takes a ridiculous amount of time to charge, maybe 1% per 10 mins or so and it gets really hot while doing so.
Mine on the other hand doesn't get hot at all and charges at least 3 times faster than his.

please state charge state, ages, fast normal etc.
firmware and revison thanx

The charger shipped with my S2 has only 700mA...
especially if you are using the phone (worst: gaming) while charging it seems to get never finished . I guess the current drain doesn't left much for the charging.
So i'm using my old HTC-chargers (one AC=>USB and AC=> MicroUSB) witch both supplies 1000mA.... ~43% more in theory
Hard to say how big the advantage is in fact, but it makes a difference.
Also keep in mind, that a standard USB-Port supplies max. 500mA, depending on other USB-devices even much less. I also read that the charging result is "better" if you not using it in the meantime.
You can buy USB-Chargers up to 2100mA (e.g Amazon), but i have doubts that this will be improve the charging time because on the type-label behind the battery is written Rated : 3,7V-1000mA. Even more current wouldn't not damage the device (afaik!!!), the device or the battery could not charge faster.
Maybe somebody knows about what is meant by the the 1000mA exactly. Would be nice if the device could be charge a little bit faster.
Otherwise i am going to buy a 2nd battery with an external charger.
greetings

I found this on Android Forum
lotus49
USB charging is slow on the S2 as it uses trickle charging
"Trickle" is an exaggeration.
The phone can tell whether it's connected to USB or a mains charger. If the latter, it limits charge current to 650mA. If the former 400mA.
It will charge faster on the mains but not loads faster.
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SLaRe said:
Same here... It takes too long to charge...
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I usually sleep more than 3.5 hours per day so I don´t see any problem in the charging time

JJEgan said:
No it takes the normal time but if its to slow for you dont drain it or sell it .
jje
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Click to collapse
My other cell phones are fully charged in 2 hours, more or less. And yes, I'm considering selling it, because I like to use my gadgets and the SGSII doesn't admit an intensive use without running out of battery, unless you have a second battery.
rj3005 said:
I usually sleep more than 3.5 hours per day so I don´t see any problem in the charging time
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Yeah, I do sleep more than 3.5 hours per day and I try to charge it every night, but the problem is when the phone runs out of battery in the middle of the day and you don't have 3.5 to spend in charging it fully.

I think the iphone 4 is only a 1420Mah battery if I remember correctly while ours is 1650. Sure, it takes perhaps another hour to charge but I don't find it a big deal. It does appear that the first 50% charges faster then the second half as well but that could just be my imagination.
I have read that Samsung phones charge slower so that the battery life will be longer than that of those other phones such as HTC where the phone charges a lot faster. I'd rather get another year out of my battery and it take longer but do admit 3.5 hours does seem like a while.

this topic has been covered. teh SGS2 battery driver is capped at 650 mA for wall charging, 450 mA for USB charging. this code resides in the battery driver.
someone could compile a new kernel with this value raised. other phones like the nexus one charge at 980 mA for wall charger, 480 for USB.
samsung capped charge current, likely for heat issues, nobody really knows.

same. take long time to charge and heating if charge n gaming. the hottest spot at camera side
Sent from my GT-I9100 using XDA Premium App

6 hours to recharge?

I recharged my Galaxy Tab 10.1 yesterday from a 15% remaining charge.
I powered it off and used the wall charger. It took almost 6 hours to charge to 100%!
Is this normal or is there something wrong with the battery?
Thanks!

Mine was slow at first too. But now seems to have gotten quicker.

luigig said:
I recharged my Galaxy Tab 10.1 yesterday from a 15% remaining charge.
I powered it off and used the wall charger. It took almost 6 hours to charge to 100%!
Is this normal or is there something wrong with the battery?
Thanks!
Click to expand...
Click to collapse
What is the rating on the charger that comes with the unit?

The rating is 5V - 2A

Yep, noticed it took about 3 hrs to go 40% charging. Not sure why there is such a drastic difference from the Xoom which could charge from 10% to full in little over an hour with similar drain to GT.
Sent from my PC36100 using XDA Premium App

Ravynmagi said:
Mine was slow at first too. But now seems to have gotten quicker.
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Can you please quantify what quicker means?

We have a rather large battery in the device, while I agree 6 hours is abit much, it should be quicker at 2 amps.
On the other hand, I sit in on the charger at night before I go to bed. I am definately a heavy user as well, and the battery lasts me all day with atleast 30 to 40% left over by bed time (this includes a 1.5 hour commute each direction using Waze, the GPS, and wifi tethered to my phone, 2 gmail accounts polling every 15 min, web surfing throughout the day, and playing games during my morning and afternoon constitutions .. I know.. too much info)..
So I can live with a longer charge time, at least for now..

I charged my GT Tab completely before using it the first time. Then I drained it down to about 9%. I timed my first full charge from 9% to 100%, it took exactly 6 hours and 4 min. My Xoom charged in half the time. I am hoping it gets better like I have heard from different people.

dsEVOlve said:
Yep, noticed it took about 3 hrs to go 40% charging. Not sure why there is such a drastic difference from the Xoom which could charge from 10% to full in little over an hour with similar drain to GT.
Sent from my PC36100 using XDA Premium App
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Click to collapse
i believe the xoom's charger is 16watts or more. i can't really remember, but it's got the highest rated charger b/t the xoom, tf, and gt10.1.

I think that's just wishful thinking on their part. How does a battery suddenly learn to charge itself faster. You make it sound like the battery is a muscle you can work out. The thing takes forever to charge but it also has excellent battery life. So as long as you don't find yourself in a hurry to travel without time to charge the battery should last you almost all day.
Sent from my PC36100 using XDA Premium App

I charged the device fully before use. Used it down to 10%, plugged it in and charged to full powered off. This took around 6 hours. The second time I charged it from around 14-15% It took about 4 hours. I have charged it twice more since from almost zero, and it's taking about two hours.

Remember the math:
7000 mAh battery
2000 mAh charger
That means from drain to full if the screen is off, about 3-4 hours. If you have the screen or device on and it's doing anything, it's using some of that incoming charge, so will increase to 4, 5, 6 or more hours to fully charge.
Gets even worse if using an aftermarket charger, say a 800 mah or 1000 mah charger like the iPhone or Kindle charger...can then take 10-14 hours to fully charge, hehe.
It's funny how people say it charges quicker after a while, when that's not logical, you just don't notice it as much going from 65% to 100% as you noticed when it went from 15% to 100% the first time, hehe

tycon said:
I charged the device fully before use. Used it down to 10%, plugged it in and charged to full powered off. This took around 6 hours. The second time I charged it from around 14-15% It took about 4 hours. I have charged it twice more since from almost zero, and it's taking about two hours.
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Click to collapse
The xoom charges super fast, like from almost zero to full in around 2 hours. That's about all i miss right now
Sent from my PC36100 using XDA Premium App

jvs60 said:
The xoom charges super fast, like from almost zero to full in around 2 hours. That's about all i miss right now
Sent from my PC36100 using XDA Premium App
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Smaller battery=shorter charge, a 2 gallon gas tank is quick to charge too, hehe.... kidding.
But seriously, Samsung is bad with their charging. My Samsung Infuse and my Galaxy tab both take forever to charge.

tycon said:
I charged the device fully before use. Used it down to 10%, plugged it in and charged to full powered off. This took around 6 hours. The second time I charged it from around 14-15% It took about 4 hours. I have charged it twice more since from almost zero, and it's taking about two hours.
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Click to collapse
Did I read it correctly that if recharged from almost 0 (e.g. <5%?), it takes only 2 hours to go to 100%? This seems counter intuitive.

luigig said:
Did I read it correctly that if recharged from almost 0 (e.g. <5%?), it takes only 2 hours to go to 100%? This seems counter intuitive.
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I think someone has a bad battery

verusevo said:
I think that's just wishful thinking on their part. How does a battery suddenly learn to charge itself faster. You make it sound like the battery is a muscle you can work out. The thing takes forever to charge but it also has excellent battery life. So as long as you don't find yourself in a hurry to travel without time to charge the battery should last you almost all day.
Sent from my PC36100 using XDA Premium App
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i think what happens is that as the battery calibration gets more accurate it finds where to quick charge and where to trickle in the appropriate levels.

one thing i dislike about note10.1

the charging time. this thing takes a really loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong time to charge (about 5+hours). i know it's 7000mah, but my xoom (6X00mah) takes only about 3 hours , and both of them have almost same battery life (note is slightly better)
as i know xoom uses 12V to charge, how about note?

Mine charges up to about 98% in about 3 hours from about 30%

Im on the original firmware on the 8013 white version. Last night i went from 3%- 79% in a little over 2 hours. I cant complain about that. Also, i turn it off when i do that. When i charge it while on, i put it in power saver mode, and it charges well enough for me. I think the first time it charged it took about 5 hours...but since then, very good.

donec said:
Mine charges up to about 98% in about 3 hours from about 30%
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That's pretty much what I'm experiencing.

BarryH_GEG said:
That's pretty much what I'm experiencing.
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Me too!

donec said:
Mine charges up to about 98% in about 3 hours from about 30%
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Same here.

sledgie said:
Im on the original firmware on the 8013 white version. Last night i went from 3%- 79% in a little over 2 hours. I cant complain about that. Also, i turn it off when i do that. When i charge it while on, i put it in power saver mode, and it charges well enough for me. I think the first time it charged it took about 5 hours...but since then, very good.
Click to expand...
Click to collapse
Very usefull information. The WHITE version. I wonder the grey or black version how much it takes to charge. I think black version charges more quickly because black absorbs energy, and white doesn't, what do you think?
Mah, samsung users are just as stupid as iphon users, just the opposite sides.

mano42 said:
Mah, samsung users are just as stupid as iphon users, just the opposite sides.
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And since you have no Samsung devices in your signature I'm assuming you just came here to share that observation? Too much time on your hands?

Mine def is a slow charge, but honestly never timed it. could be 3 hrs, but feels like 5+ or is it. not sure . i think.

omnia1994 said:
the charging time. this thing takes a really loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong time to charge (about 5+hours). i know it's 7000mah, but my xoom (6X00mah) takes only about 3 hours , and both of them have almost same battery life (note is slightly better)
as i know xoom uses 12V to charge, how about note?
Click to expand...
Click to collapse
Is this using the power outlet charger? Or is this using a 3rd party charger? I don't have any problems charging my Note 10.1. Takes about 45 minutes or so to charge from 80% to 100%
Sent from my GT-N8000 using xda premium

I just plug mine in before I goto bed when the battery is getting down there. When I wake up its done, guess I've never paid attention

twiggums said:
I just plug mine in before I goto bed when the battery is getting down there. When I wake up its done, guess I've never paid attention
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Click to collapse
Same here..my batery able to survive, the entire day b4 its run out of juice just b4 my bed time ..
Sent from my GT-N8000 using xda app-developers app

I alternate between Note 10.1 and Nexus 7 while the other one is charging. Regardless, charging time hasn't been an issue and am happy with it. Note 10.1 gets about 8 hrs of on screen time versus about 6 hrs on Nexus 7.

My first Note 10.1 (White 16gb) took awhile to charge, it was much longer then expected. I even posted a similar question here and had the same responses, minus the idiot. I exchanged it for a 32gb version and the second one charges much more quickly, leaving me to believe the first Note I had was faulty.

ElCamino said:
Is this using the power outlet charger? Or is this using a 3rd party charger? I don't have any problems charging my Note 10.1. Takes about 45 minutes or so to charge from 80% to 100%
Sent from my GT-N8000 using xda premium
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Click to collapse
Mine is almost the same, but in 45mins xoom can charge from 60-100

Only thing i dislike now that i have CM 10 is ...nothing:good:

You need to make sure your charger has an output of 2A. Anything less will take way longer.

se1988 said:
You need to make sure your charger has an output of 2A. Anything less will take way longer.
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Even if it is,, will the hardware charge at a higher rate? Anyone know what the max charge rate of the charging hardware is?
Sent from my SGH-I777 using Tapatalk 2

omnia1994 said:
Mine is almost the same, but in 45mins xoom can charge from 60-100
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Click to collapse
Mine (white, 16Gb) charges much much slower than my Xoom. The Xoom will go from 0 to 70 in just over an hour.
I just discovered the power saving mode and will test how that impacts charging. Right now I am using the Samsung charger connected to the Samsung dock and its slow. Hopefully not an issue with this tablet.
Sent from my GT-N8013 using xda premium

BarryH_GEG said:
And since you have no Samsung devices in your signature I'm assuming you just came here to share that observation? Too much time on your hands?
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Click to collapse
Great story bro...I wish I were that creative..
Btw everyone, there are no differences between the deep grey and the white other than aesthetics. And the only difference between the 16 and 32 gb models was how much you were willing to shell out for more storage space. I am just getting tired of people posting a paragraph describing their device before getting on with describing a problem...all you need is which version you have ie, 8000, 8013 etc. Flame me if you want, it is my opinion.
Now I step down from my soap box...night y'all.
Sent from my GT-N8013 using Tapatalk 2

Battery Life and SoT discussion

Just got the note 10.1 2014. What's everyone averaging on the screen on time?
Sent from my SM-N900V using XDA Premium 4 mobile app

10 - 11 hours screen on time
Sent by my Note 10.1 2014

benni2903 said:
10 - 11 hours screen on time
Sent by my Note 10.1 2014
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Around same amount as his,
+-9% each hour. And charging time sucks as hell. 7 hours to charge to 100%

Anicane said:
Around same amount as his,
+-9% each hour. And charging time sucks as hell. 7 hours to charge to 100%
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Click to collapse
7 hours? Do you use the device while charging?
Charging time should be around 4 hours
Sent by my Note 10.1 2014

Sweet. I'm loving it so far
Sent from my SM-P600 using XDA Premium 4 mobile app

benni2903 said:
7 hours? Do you use the device while charging?
Charging time should be around 4 hours
Sent by my Note 10.1 2014
Click to expand...
Click to collapse
Exynos variant does not support fast charging while Qualcomm does...

35 hours or more of total battery life with 6 1/2 to 7 hours of screen time. I play a lot of intense games so my screen time is lower, but I've easily been able to get 5 1/2 of screen time out of this thing playing Galaxy on Fire 2 and it's like one of the most demanding mobile games available.

djurkash said:
Exynos variant does not support fast charging while Qualcomm does...
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Click to collapse
Ok...but I thought because of the ~8200mAh battery and the 2000mAh charger the regular charging time would be around 4 hours
Sent by my Note 10.1 2014

How are you getting around 9 mine averages only 6 and I mainly read on mine. 1/4 brightness??
Sent from my SM-P600 using Tapatalk

globen said:
How are you getting around 9 mine averages only 6 and I mainly read on mine. 1/4 brightness??
Sent from my SM-P600 using Tapatalk
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Click to collapse
I was using previous generation of 10.1 on almost minimum brightness, and was getting more than 10h of screen time. Yes, I've been using it indoors mostly, and my eyes weren't asking for more. I am getting new 10.1 in couple of days, and hope to have similar SoT...

djurkash said:
Exynos variant does not support fast charging while Qualcomm does...
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Click to collapse
the exnyos does have a full powered charge at up to 80% then trickles to 100%. it takes mine about 4-5 hours to go 0-100. it doesn't use qualcomms quick charge tech, but it doesn't trickle the whole way. if it takes 7 hrs then the charger or cable could be bad or the tablet may not be telling the charger to send 2amps.

madsquabbles said:
it takes mine about 4-5 hours to go 0-100.
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Click to collapse
It's pretty slow. Almost 30% slower than the N10.1-12 a lot of us came from. It's the move from Samsung's proprietary 30-pin connector to standard microUSB. The N10 using a pogo pin charger (vs. its standard microUSB) is about 30-40% faster than what's shown below.

BarryH_GEG said:
It's pretty slow. Almost 30% slower than the N10.1-12 a lot of us came from. It's the move from Samsung's proprietary 30-pin connector to standard microUSB. The N10 using a pogo pin charger (vs. its standard microUSB) is about 30-40% faster than what's shown below.
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Click to collapse
that article was what concerned me before i bought the tablet, but i went ahead and got it anyway. the only time that mine had actually nearly taken that long was on the first few charges. sometimes it would be stuck at trickle and wouldn't pull the full power (i actually only get an average of 1.6A from the stock charger and cable - I've never verified the volts. i could stick it on my killawatt and see what it pulls. after those few quirks i don't see charge times as long as anand has reported. it's always that last 80% that's a killer. it seem to take from 1.5-2hrs depending. i can go from 37% to 80% in 2hrs then i have to wait nearly as long for the last 20%. i think it's a battery saving technique that samsung is using. toyota's reports showed that charging the battery to 80% capacity extened the life. on my 700t there's a battery saving option that won't charge the battery over 80%.

Quickcharge on USB 2.0?
djurkash said:
Exynos variant does not support fast charging while Qualcomm does...
Click to expand...
Click to collapse
But will Quickcharge still work because the first unit utilizing it is the Samsung Note 3 and that one has USB 3.0, Note 10.1 2014 only has USB 2.0?

Chesluk said:
But will Quickcharge still work because the first unit utilizing it is the Samsung Note 3 and that one has USB 3.0, Note 10.1 2014 only has USB 2.0?
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Click to collapse
USB 3.0 doesn't impact charging time, at least not yet. And the S-800 version of the N10.1-14 does use the same SoC as the N3 and someone here with a SM-P605 reported getting a full charge in about 5 hours and 80% in 3.
Charging is an interesting story on the Note 3, but primarily because of what doesn’t change. The Note 3 continues to use Samsung’s tablet charging specification and charger, which has 2 amps of maximum output. The Note 3 draws 2 amps over a considerable amount of the charging curve, like other Samsung devices (in the linear part of the charge curve). USB 3.0 doesn’t change things up here quite yet with the new supported charge voltages that are coming eventually with the power delivery specification.
The Note 3 does charge faster overall compared to the SGS4 however thanks in part to the new PMIC (PM8941) which is part of the overall 8974 platform story.
http://www.anandtech.com/show/7376/samsung-galaxy-note-3-review/3​

Just curious how accurate screen time readings are. Mine seems to be off. I've been on my device all morning and it seems to not reflect that.
Sent from my SM-P600 using XDA Premium 4 mobile app

Bsmith0731 said:
Just curious how accurate screen time readings are. Mine seems to be off. I've been on my device all morning and it seems to not reflect that.
Sent from my SM-P600 using XDA Premium 4 mobile app
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Depends on the brightness you are using. Like I said i get about 10 to 11 hours screen on time indoors
Sent by my Note 10.1 2014

my battery will only charge to 99%, why?
Sent from my SM-P605 using Tapatalk 4

XGrzesX said:
my battery will only charge to 99%, why?
Sent from my SM-P605 using Tapatalk 4
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lol, that's actually a feature that Donald Trump insisted be included in all white and black Notes to remind people they aren't part of the exclusive 1% who actually have solid gold Notes. Interestingly the solid gold Note consistently shows 1%.

See this is the odd thing - I had this tablet a month ago but got it exchanged because I found a cheaper one anyways on that tablet I am positive I was getting 6hrs screen time which was some youtube videos but majority was browsing the internet and that was it.
However on this new one I just got 9hrs30mins and that was with watching a 2hr movie streaming online, about 2hrs worth of streaming tv shows, loads of web browsing and also a little bit of Youtube...Personally I think this is awesome screen time (Mind you it's my first tablet so nothing to compare to but still). I am very happy with charge (5hrs) and battery drain on this tablet - very nice indeed.
Would love to squeeze 11 hours out of this like someone had in the earlier posts but that seems a tad difficult considering I already have brightness pretty low and all pointless apps disabled.