The gs4 doesn't charge at 5.0 V and 2.0mA this new battery app proves it it only charges at 4.1v and 1mA using charger that comes with gs4
Sent from my SCH-I545 using xda app-developers app
is it possible the app is wonky or reading the phone incorrectly? mine charges up quickly and just fine. not sure how the samsung charger is fake...
gabrielpina4 said:
The gs4 doesn't charge at 5.0 V and 2.0mA this new battery app proves it it only charges at 4.1v and 1mA using charger that comes with gs4
Sent from my SCH-I545 using xda app-developers app
Click to expand...
Click to collapse
The app can only tell how much different the battery is, not how much juice is actually flowing into it. Meaning, the possibility exists that you phone is *using* juice while it's charging, lowering the amount of difference the app can see.
gabrielpina4 said:
The gs4 doesn't charge at 5.0 V and 2.0mA this new battery app proves it it only charges at 4.1v and 1mA using charger that comes with gs4
Sent from my SCH-I545 using xda app-developers app
Click to expand...
Click to collapse
Thread fail. Voltage output, as verified with a Fluke 77 Type IV multimeter, is spot on 5 VDC. Current, which is governed by the phone, has been verified by many to a max of 1900 mA.
I can see just from the screenshots that the app is detailing misinformation. Were your phone actually charging at the rate indicated, it would take approximately 26 days for it to fully charge, assuming no use, from the 76% in the screenshots.
Oftentimes you get what you pay for. Such is the case with Amazon's Free App of the Day sometimes.
najaboy said:
Thread fail. Voltage output, as verified with a Fluke 77 Type IV multimeter, is spot on 5 VDC. Current, which is governed by the phone, has been verified by many to a max of 1900 mA.
I can see just from the screenshots that the app is detailing misinformation. Were your phone actually charging at the rate indicated, it would take approximately 26 days for it to fully charge, assuming no use, from the 76% in the screenshots.
Oftentimes you get what you pay for. Such is the case with Amazon's Free App of the Day sometimes.
Click to expand...
Click to collapse
god among men
Sent from my SCH-I545 using xda premium
I know this is incorrect but even if I didn't, I still would not believe it was not 2amp. This phone charges scary fast.... so fast that I do actually use a 1amp charger. I don't hate my battery enough to charge it that fast
Sent from my rooted S4 blessed with Cleanrom 1.2
Help a newbie out.
I had an iPhone 5 that charged ridiculously fast compared to older phones.
When I'm charging my new S 4, how do I get the faster charge rate?
I'm currently using the Moto 2 USB wall outlet charger that came with my razr maxx hd. And it seems like it takes way longer then my five and I chalked it up to having twice the battery.
Is there a faster way to charge?
Sent from my SCH-I545 using xda premium
Rickinsav said:
Help a newbie out.
I had an iPhone 5 that charged ridiculously fast compared to older phones.
When I'm charging my new S 4, how do I get the faster charge rate?
I'm currently using the Moto 2 USB wall outlet charger that came with my razr maxx hd. And it seems like it takes way longer then my five and I chalked it up to having twice the battery.
Is there a faster way to charge?
Sent from my SCH-I545 using xda premium
Click to expand...
Click to collapse
Use the charger and cable that came with the phone.
Sent from my SCH-I545 using Tapatalk 4 Beta
najaboy said:
Use the charger and cable that came with the phone.
Sent from my SCH-I545 using Tapatalk 4 Beta
Click to expand...
Click to collapse
The new charger is amazingly fast, if thats a word. I was going to use my.old charger from the s3 at work but its so slow it barely keeps up with use and can't keep up if I'm running my wifi or playing games. Now I just need to find a car charger thats as fast as the new charger.
Sent from my SCH-I545 using xda app-developers app
Keep in mind there's more to it then just the wall charger's output ability. There's something in the S4 that recognizes the original sammy charger and turns up the charge rate yet will only allow a trickle charge on other non-sammy 2.1A wall chargers.
It appears that dome people are aware of this and have managed to modify the non-sammy chargers to enable the faster charge. Then there's some semantic confusion between "quick charge" and "fast charge" features that may be enabled in roms or kernels.
All I know is I wish there were more info on this stuff.
A little knowledge of how Li-ion batteries charge is an important thing. Li-ion batteries have special charging requirements.
The part you plug into the wall... thats not a charger... its a power supply. It provides a 5v DC output at up to 2 amps.
The charger is built into the phone, and it determines how to use that available power to charge and power the device.
Li-ion batteries charge in a two stage cycle that is called "constant current/constant voltage". It is also important to know that a battery's voltage drops as it is discharged. (this voltage drop is how the battery meter gets its information, as it is predictable when tested under constant loads... the variable load of a phone is why the meter seems to be inaccurate at times)
During the first phase, "constant current", the battery is fed a constant current at the same voltage as the battery is currently outputting. As the battery takes in energy, the voltage rises but the current is kept constant.
The second phase, "constant voltage" starts when the battery reaches its highest voltage. (or more accurately, its highest safe voltage, which is around 90% capacity) During this second phase, the battery is fed a constant voltage, (the max voltage) and the current varies. The battery will draw as much current as it is able, and this rate slows naturally as the battery reaches full capacity. When the current drops lower than a certain set amount, the charger stops the charging process and the battery is said to be fully charged. This second phase is slow compared to the first phase, and that is why it can seem like the last 10% of charge takes longer than any prior 10%.
Some phones use the power supply to both power the device and charge the battery, the battery is electrically isolated during charging... but most charge the battery without isolation. Either way, the power from the power supply is being used to both charge and power the device, and this limits the charging speed.
This also limits the maximum capacity the battery can be charged to while in the device, because the voltage/current measuring is less precise. Unfortunately for these phones, the charging is controlled by software, and not simple hardware circuits that are isolated from the battery power. In fact, even when charging the phone with the power off... the phone is still actually powered up but in a low power background mode. This mode is actually a special screen off recovery mode. CWM recovery has had several instances of bugs, where the phone could not charge if the battery died to the point of powering of the device. Because the phone could never power into the special mode to start charging, due to this special mode being missing from, or bugged in CWM.
Also... these batteries have on average a 2-3 year lifespan, and also limited number of recharge cycles. The 2-3 year life is the same even if the battery is unused. As the battery ages, it looses capacity.
Charging at slower rates is better for battery lifespan than higher rates. Now the batteries in the S4 and especially the Note 2 are larger, and 2A is still considered a fairly slow rate, but of course 1A is even better. If you tend to charge only at night while sleeping, it may be better to use a 1A charger.
Awesome explaination !!! That makes complete sense and explains things. The point made in a prior post, about the phone recognizing the new charger, thus charging faster makes sense as well. The new charger must "turn on " the quicker charging on the S3 as well, because it charges my old S3 as fast as my S4. I didn't try the charger on the older firmware but it definetly works with the latest update.
Sent from my SCH-I545 using xda app-developers app
Related
Well I bought the Galaxy S3 on the first day of the UK launch and depleted the battery to 0% then charged with the original 1 Amp charger from 0%. I had noticed that this takes a very very long time, around 8 hours. The battery life after charging however is substantial and very adequate.
On the second charge after depletion once again, I decided to use a Griffin 2.1 Amp charger which I had used to charge the hefty Galaxy note with. The Galaxy S3 charges at a much rapid rate and takes around 2-3 hours to reach 100% from 0%. However I have noticed that the battery life depletes a bit faster, Is this due to my imagination or is a 2.1 Amp charger not suitable for this phone as it was with the tablet-like Galaxy note.
Also note that I tried to charge my HTC one X with the 2.1 Amp charger and it charge very slowly, while the original HTC charger has a much lower ampage than 1 Amp
Hmm I have been using my galaxy s charger 0.5amp and it has been charging pretty slowly but seems to deplete faster.
I have been actively using for 50min on wifi now and 85% left. Which seems a bit quick for me. I will try charging with the standard 1amp tonight and see.
Now fast are you depleting at?
I measure my battery life by checking the screen on time just before the death of the charge which was 5 hours on the original charger, with the quick charger its 4 hours. My Galaxy note has no change in battery life weather you any ampere chargers. Also the general battery percentage seems to run low faster anyway on the galaxy s3 using the fast charger.
Sent from my GT-I9300 using xda premium
I shall try the standard 1 amp charger the next time my phone depletes
Sent from my GT-I9300 using XDA
Just wondering, since the S2 had a limit of 650mA for charging, does this apply to the S3? You guys make it sound like it charges slow as well...
Galaxy s2 does charge very slow for me aswell. Compared to htc phones the Galaxy s 2 charges painfully slowly. Now I regularly use the 2 amp charger on my galaxy s3 and have seen a huge improvement in charging speeds. It charges at around 2% per minute and still lasts around 4 hours of screen time for a full charge.
Sent from my GT-I9300 using xda premium
I noticed that I can only charge fast using original charger. While charger with shorted usb data + & - (ie. htc 1A charger) will not activate fast charging.
You can verify by going into *#*#4636#*#*, Battery, using ori charger will show AC while HTC charger will show USB
I think samsung made some changes to the microUSB pinout
xifer said:
You can verify by going into *#*#4636#*#*, Battery, using ori charger will show AC while HTC charger will show USB
I think samsung made some changes to the microUSB pinout
Click to expand...
Click to collapse
Thanx for the "shortcode". Where does one find those?
Also from reading about the MHL to HDMI cable from older devices not wotking, it does in fact seem that Samsung have changed the microUSB pinouts (although my Nokia 1.2A charger shows AC in that battery "menu").
Mine charges from about 10% to full in about two and a half hours, using the charger provided in the box.
My s2 came with a 0.7amp charger and took about 2.5 hours. My s3 came with a 1amp charger and takes about the same. Charges to 80% in no time and then slows down for the later part of the charge
Sent from my GT-I9300 using XDA
A battery isn't like a fuel tank which you simply fill up through the hose until it's full.
Due to physical and chemical reasons, a nearly-full battery takes a lot longer to fill by a certain percent since it simply can't store the energy quickly enough.
Additionally, deep-discharged batteries often start with a slower charging speed (and then cranked up) to keep the battery from dying too soon and/or not being able to reach full capacity.
is the Nokia 1.2A charger ok to use with the samsung G3 as i got one of these spare and would prefer use it if so as the usb is way to short to reach from my desk up and around the back.
but the Nokia 1.2A charger lead is more than long enough
Just to check with all of you, i've been told that it is best not to charge your phone or any other handheld device IF the battery is not at a really low rate, at least not till your device actually prompts you to charge. They were saying that this would cause the battery life to be shortened. But at times, I need to make sure that i have enough battery to last me for a few more hours before i knock off from work, i would just charge the phone (battery at 25-30%) even before it prompts me to. Is it alright to do that often?
2ndly, at times when i stream videos on my phone for many hours, the battery would definitely drain fast and i would need to charge my phone at least 2-3 times a day. Is it alright for me to do that or am i "abusing" it? =X
Appreciate all your advises...Thanks in advance~
so any update on if using the nokia charger is ok with it being 200mah more than the standard 1A charger since it has longer lead.
or there is the 700mah samsung charger from my old S2
speaker5 said:
Well I bought the Galaxy S3 on the first day of the UK launch and depleted the battery to 0% then charged with the original 1 Amp charger from 0%. I had noticed that this takes a very very long time, around 8 hours. The battery life after charging however is substantial and very adequate.
On the second charge after depletion once again, I decided to use a Griffin 2.1 Amp charger which I had used to charge the hefty Galaxy note with.
Click to expand...
Click to collapse
neko0nna said:
Just to check with all of you, i've been told that it is best not to charge your phone or any other handheld device IF the battery is not at a really low rate, at least not till your device actually prompts you to charge. They were saying that this would cause the battery life to be shortened. But at times, I need to make sure that i have enough battery to last me for a few more hours before i knock off from work, i would just charge the phone (battery at 25-30%) even before it prompts me to. Is it alright to do that often?
Click to expand...
Click to collapse
I don't know why this misconception still lives on; lithium ion batteries require no priming on first use. The WORST thing you can do with a li-ion battery is to fully deplete it before recharging. It is much better to top it off whenever possible; having said that leaving it turned on, on the charger once it is full is also not the best thing (though nowhere near as bad as depleting it fully).
I believe since this phone has a removable battery with external charger the best thing you can do is always charge your battery in the external charger and just switch out the battery when it gets to around 10%.
Nek0onna you should charge your phone whenever it's not full and you have a handy charger.
http://batteryuniversity.com/learn/article/how_to_charge_when_to_charge_table
what about using different chargers though as i have said yet not answered yet,
i got a samsung s2 700mah charger and a nokia 1200mah charger which will work the best for the battery etc
the 1A included one the usb lead is to short for use behind a desk
jjwerrett said:
what about using different chargers though as i have said yet not answered yet,
i got a samsung s2 700mah charger and a nokia 1200mah charger which will work the best for the battery etc
the 1A included one the usb lead is to short for use behind a desk
Click to expand...
Click to collapse
Yeah its fine, you can use it.
Sent from my E15i using xda premium
Can anybody check what the max charge rate is on this device with a battery monitor app? I have handfuls of 1A and a couple 2.1A chargers. I'd really like to charge at twice the rate if possible but not all devices support such rapid charging (kernel limits and such). Just curious before I buy one Thanks!
Even if Samsung slipped up and allowed a 2A charge i'd never want to try it, because tablet and laptop batteries are rated and manufactured for a higher current charge/discharge and most phone batteries would heat and swell up and possibly explode.
my HP touchpad charges with a 1A charger and it would be nice to use that with my sgs3.
Can anybody please check what the max charge rate is on this device
I recently upgraded to a Rezound before the family share data plans came around to keep my unlimited.
First thing I did when I got the phone was to install the latest ICS RUU, unlocked via htcdev, s-off and ra recovery. For the ROM I used business sense ics. Started on 5.4 and upgraded to 5.5. I'm using the stock kernel bundled with the ROM. It's running awesome. Only problem I have is the battery charging.
I have the OEM HTC 2750 ma extended 3.7v battery. The charging is extremely slow. It took the phone almost twelve hours to go from dead to "charged". I've read a few issues regarding this, but nothing that looks like it matches my issue.
Using battery monitor I checked the ma when charging and it seems to be charging at a slower pace than via even USB. It ranges anywhere from 175ma to 400ma with occasional jumps to 800ma and even the occasional dip into negative ma even with the charger connected. According to the app it seems to stall at 98% charged with a charge of 2692 mAH of 2720 mAh. I've tried the stock charger that came with it, an igo charger, an lg charger. Just about every charger I could think of. Even the 2.1 amp chargers.
Anyway, I'm at a loss. I love the phone, I just hate the fact that I have to basically be tethered to a charger for 12 hours to get a charge that only goes to 98%. Any ideas or explanations of to why this is happening. I checked the battery threads here, but like I said or doesn't really match my setup. I appreciate any input.
Sent from my MB865 using xda app-developers app
I know you have tried different wall plugs but have you tried different cables?
It is possible you might have got a lemon.
Yeah, I've tried a few different cables, even tried bump charging like I did with my old incredible. When you say lemon, do you mean the battery or the phone itself? everything is working so well except for the charging.
Sent from my MB865 using xda app-developers app
Does the normal battery charge at a normal milli amp rate or do they both charge slowly? Also, how hot is the phone when it is charging slowly? The phone might be getting too hot and slowing the charge down to reduce heat
Honestly, I haven't actually used the stock battery. I'm not at home now, but when I can I will switch batteries and let you know what happens.
The temp is usually in the low 90s when charging. It actually increases during use. Right now, discharging the temp is at 107 and seems to be climbing.
Sent from my ADR6425LVW using xda app-developers app
Try the stock battery. We need to narrow it down to a phone or battery problem.
install current widget
tell us what the mah charging rate
check ur cable might damage or fake
So I ran down my battery until the phone shut off today. While I was waiting I wiped the battery stats five times. I'm currently charging the phone now and it's charging much faster. The ma when charging now is up where it should be. Ranging anywhere from 500 when I'm using the phone to over 1000 when I leave the phone alone. I don't want to speak to soon but maybe everything worked itself out. I got about six hours of use out of the battery, and that was with the screen on over 90% of the time. Not bad. I'll report back after a few charge and discharge cycles.
Sent from my ADR6425LVW using xda app-developers app
Settings/Power/Battery Status. With the OEM charger and cable, it should say "Charging (AC)." If it says "Charging (USB)," there's a problem, with charger, cable, the jack on your phone, or the firmware you're running.
My RAZR doesn't charge faster even I used with higher current 2.1 amp charger.
Is there anyway to remove that charging current limitation?
Thanks!
Sent from my XT910 using xda app-developers app
Yeah
By charging the battery directly with a charger.
Don't do that, it's dangerous (possibly) and most likely will damage the battery by charging it too fast.
And higher amperage does charge my razr faster up to ~95%
After that it charges slower, by the time it's at 100 it's like only 10mins
But from 0-90 its about a 30min gain
Sent from my XT910
ooohhaaahh said:
Yeah
By charging the battery directly with a charger.
Don't do that, it's dangerous (possibly) and most likely will damage the battery by charging it too fast.
And higher amperage does charge my razr faster up to ~95%
After that it charges slower, by the time it's at 100 it's like only 10mins
But from 0-90 its about a 30min gain
Sent from my XT910
Click to expand...
Click to collapse
0-90 : about 30mins is so impressive.
What charger did you use to charge that quicker? I've tried with my car charger Kensington 2.1amp but charging time is as the same as original wall charger 800mah.
Sent from my XT910 using xda app-developers app
That's because the phones charging protection circuitry only draws the current that is required
Sent from my Nexus 7 using Tapatalk 2
Hardware or software related?
Is there anyway we can remove that restriction?
Sent from my XT910 using xda app-developers app
I know it may sound good to remove he restriction, but it's not a good idea at all.
It's hardware related (probably just some diodes/CIs) and that's the way it should stay (from safety reasons). Batteries have predetermined "life-cycles" and by charging them with a higher current than specified, will definitely cause cells to overheat and melt/ignite. Even if you pull this off once or twice, the battery will die very quickly...
More info on Wikipedia:
http://en.wikipedia.org/wiki/Lithium-ion_battery
Scroll down to safety/specifications.
katu2006 said:
I know it may sound good to remove he restriction, but it's not a good idea at all.
It's hardware related (probably just some diodes/CIs) and that's the way it should stay (from safety reasons). Batteries have predetermined "life-cycles" and by charging them with a higher current than specified, will definitely cause cells to overheat and melt/ignite. Even if you pull this off once or twice, the battery will die very quickly...
More info on Wikipedia:
http://en.wikipedia.org/wiki/Lithium-ion_battery
Scroll down to safety/specifications.
Click to expand...
Click to collapse
Thank you for your info!!!
Due to hardware restricted, it shouldn't be a problem if I use my car charger to charge it on the way, should it?
I wouldn't pull that hardware off.
Sent from my XT910 using xda app-developers app
blisslove said:
0-90 : about 30mins is so impressive.
What charger did you use to charge that quicker? I've tried with my car charger Kensington 2.1amp but charging time is as the same as original wall charger 800mah.
Sent from my XT910 using xda app-developers app
Click to expand...
Click to collapse
an iphone charger (1A)...it gets insanely hot when charging the razr and charges mostly faster than the stock charger.
i advise to not use the 2 amp charger too often and just live with the charge times, your battery will last longer that way.
does you 2.1 A charger atleast get from 0-50 faster?
maybe it's just too much of a load so it gets restricted
ooohhaaahh said:
an iphone charger (1A)...it gets insanely hot when charging the razr and charges mostly faster than the stock charger.
i advise to not use the 2 amp charger too often and just live with the charge times, your battery will last longer that way.
does you 2.1 A charger atleast get from 0-50 faster?
maybe it's just too much of a load so it gets restricted
Click to expand...
Click to collapse
This morning I charged my RAZR with my 2.1A charger. Yes, you're right, it did charge a bit quicker before 50%. So, I reckon, I shouldn't charge my RAZR with it again.
Sent from my XT910 using xda app-developers app
blisslove said:
This morning I charged my RAZR with my 2.1A charger. Yes, you're right, it did charge a bit quicker before 50%. So, I reckon, I shouldn't charge my RAZR with it again.
Sent from my XT910 using xda app-developers app
Click to expand...
Click to collapse
exactly
i'd advise against it as that is a major jump in amps
It really shouldn't make a difference, since the phone should only be pulling what it needs/can handle. Any charger 5v 1a and up should ideally take the same amount of time to charge the battery. Just because the charger can supply a higher current doesn't mean the phone will demand it.
brandogg said:
It really shouldn't make a difference, since the phone should only be pulling what it needs/can handle. Any charger 5v 1a and up should ideally take the same amount of time to charge the battery. Just because the charger can supply a higher current doesn't mean the phone will demand it.
Click to expand...
Click to collapse
I thought the same as you before but it did charge a bit quicker than normal with 2.1A . (0 to 50%).
Sent from my XT910 using xda app-developers app
brandogg said:
It really shouldn't make a difference, since the phone should only be pulling what it needs/can handle. Any charger 5v 1a and up should ideally take the same amount of time to charge the battery. Just because the charger can supply a higher current doesn't mean the phone will demand it.
Click to expand...
Click to collapse
the circuit won't let you instantly harm the battery, but we have no idea what the C rating is on the battery so it could still stress the battery more than is needed, and yes, total charge time is pretty much the same, but it gets to a higher percentage faster, and then hits a major slowdown when the charging circuitry kicks in.
my razr makes the iphone charger i have instantly heat up, no other phone/iphone does this, there is nothing wrong with the phone or charger (it's the charger i use when not home)
I'd say it's completely safe to charge any smartphone with compatible charger. Specialized IC will check voltage, current, temperature (and their delta's)and won't let you harm your battery.
If your phone charges faster from 0-90% its OK!
I've used Nokia chargers (AC-10E and AC-50E- 1.3A), also Samsung, HTC, and lots of USB ports in cars, PC's and others with my HD2, S8500, and now XT910 - it works just fine.
If somebody knows what IC Moto used in XT910, we could check what charging routine is used and estimate max charging current (I think that 2.1A charger is overkill)
EDIT: Power management chip in XT910 is Quallcomm PM8028, but no datasheet is available.
I charge the tablet like 3hrs ago, around 5 and 6pm, and its still in 40% ang then suddenly it drops to 39% (still plugged in and charging).
Im just surfing the web and some facebook, most of the time surfing the web. And i keep on killing task (manual kill).
Is my battery already broken?
Sent from my SGP311 using xda app-developers app
while charging does the notification light glow ?
What do you use to charge?
Big screens need a lot of juice and XTZ is bigger than most.
A PC USB port supplies usually 0.5A, while Sony's charger is 2A... Both can be insufficient to charge the device while in use, but the wall charger might manage it if you only use WiFi + display...but not really sure.
For comparision some tablets even refuse to charge at all from weak sources, like phone charger or PC - the iPad.
Unfortunate Sony doesn't tell if the juice is enough.
I can see you used it most of the time you charged it and the WiFi - is it Facebook the app that's using it so much?
FYI car charger is weak as well usually - 1, 1.5 amps
Sent from my HTC One S using xda app-developers app
Rozamar said:
What do you use to charge?
Big screens need a lot of juice and XTZ is bigger than most.
A PC USB port supplies usually 0.5A, while Sony's charger is 2A... Both can be insufficient to charge the device while in use, but the wall charger might manage it if you only use WiFi + display...but not really sure.
For comparision some tablets even refuse to charge at all from weak sources, like phone charger or PC - the iPad.
Unfortunate Sony doesn't tell if the juice is enough.
I can see you used it most of the time you charged it and the WiFi - is it Facebook the app that's using it so much?
FYI car charger is weak as well usually - 1, 1.5 amps
Sent from my HTC One S using xda app-developers app
Click to expand...
Click to collapse
The Sony charger I have is 1.5 A (UK version). There were lot of comments about slow charging etc and about how a 2A charger charges the XTZ quicker. I installed an app from the play store called "Battery Monitor Widget". I used it to record just the current drawn. I used the Sony Charger and also another 2A charger at various times, the current drawn does not show any higher than 1.1 Amps with either one even while it is in use. So I don't know if the 2A charger really makes a difference. I only charged from 70% to 100% and back. I will check lower values a bit later and post results. However what I did notice was if I use a long cable (to test - longer than 1.5m), then the charging current drops. Use a short cable, or Sony's own cable, the current goes back up suggesting the XTZ port really monitor the charge port.. The Charging current almost always started off with 500 mA +, which is probably why the PC USB port could not charge it; I say probably because the PC I have is quite old and has only USB 2. Anyways, maybe installing the app and keep it running in the background may give you some indications of the charging current drawn..It actually creates a timestamped log file which you can analyse later as well..
In the tool there are options for calibrating the battery etc, but I have not used it, and I do not know how it works and if it works in XTZ. I just monitored the charging current.
I did a test by draining the battery to 26%. Then when I start charging, the charging current is shown as ~850 mA. This is with Wifi on, and screen brightness set to Auto.Then when I increase the screen brightness to max, guess what, the charging current is either 0 or shown as discharging, which means the battery won't charge. Brightness set to Auto or low, causes the charging current to go upto 850 and the % charge also increases. Given that the charger is capable of 1.5A and I have seen on occasion 1.1 A being recorded, I am not sure why it charges at constant ~850mA. Possibly due to differences in voltages. This is with Sony Charger (1.5A)
I tried it with a 2A charger, and when the screen brightness is set to max, the charging still takes place although at a very low 100mA. And normal charging shows a current of ~950mA. Which is probably why some people noticed faster charging with a 2A charger as opposed to the Sony supplied one.
In short, if you want to get the tablet to charge properly using Sony Charger, try keeping the screen brightness to low or screen off.
I must qualify the above by saying I am not an expert in chargers.. Just putting down something I noticed..
nitin_ko said:
while charging does the notification light glow ?
Click to expand...
Click to collapse
Yup its orange that time..
Rozamar said:
What do you use to charge?
Big screens need a lot of juice and XTZ is bigger than most.
A PC USB port supplies usually 0.5A, while Sony's charger is 2A... Both can be insufficient to charge the device while in use, but the wall charger might manage it if you only use WiFi + display...but not really sure.
For comparision some tablets even refuse to charge at all from weak sources, like phone charger or PC - the iPad.
Unfortunate Sony doesn't tell if the juice is enough.
I can see you used it most of the time you charged it and the WiFi - is it Facebook the app that's using it so much?
FYI car charger is weak as well usually - 1, 1.5 amps
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Well, i charge it with the one that came with the XTZ so its the normal charger.
Usually i charge it overnight before i sleep and turned off it just happened that i charged it early and screen is the one eating so much for about 55% next is android os and others are below 10%.
Actually im thinking before it happened i installed some games but as i said others are below 10% so im fine with it
Also im thinking about the current, because when i got my XTZ im in my aunts home and whether i charge it turned off or on it charges fast and when i got back on my apartment then charging becomes slow..
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For all charge you use simply the Sony cable (quite short idd) and their own cable?
I haven't monitored with the app, but I belive the 2a charger I used charges faster. Mind you I,ve never used the XTZ while charging, I spoke from expirience with other tablets.
PS: If you use the cradle you might want to check my other topic - I had issues XTZ refusing to charge when low batt and 2A charger...
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Charged mine for a while this morning in the Sony dock with power on, wifi on, screen off. Like others, I use an iPad charger (2.1A).
The battery went from 11% to 55% in about 2 hours, so about 22% per hour - though I think it slows down as the % gets higher.
If I leave my phone connected to the charger overnight will it destroy the battery? Approximately 6-7hrs
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Nope(?) @hamdogg
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angel.grin said:
If I leave my phone connected to the charger overnight will it destroy the battery? Approximately 6-7hrs
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Nope. Thats fine... they have an automatic shutoff mechanism built in to prevent overcharging.
- Fully charging and discharging the Lithium-Ion batteries 3-4 times will allow the battery to reach its maximum rated capacity
- Don't ever leave your phone discharged for long - the batteries do self-discharge and the charge could drop low enough to damage the battery
Not Ultra owner (but tend to buy one in near future) but just to make sure, buy some electric plug with timer built in, so it will turn off after some time..
Hmmm.. i should post a guide on all the stuff I found out... here is some of the most useful
Buying cheap: Save money... but do you?
A charger can have an adverse effect. Often, cheap chargers won’t respond so well to the shutoff mechanism in the phone.
Every cheap charger I tested allowed energy to come through in sporadic bursts, which isn’t good for your battery’s life. For example I bought a $2 micro USB charger and testing the pull inside my device ranged from 500 to 1200 mAh. The official Samsung cable allowed 1000-1200 mAh to be pulled. They both charged in similar times, (1 1/5 hours and 2 hours) however I instantly threw the cheaper USB cable in the bin. The battery should handle this ok... SHOULD.... but the cut off circuit inside your device may not function correctly, which would be tragic!
Test this yourself. Plug your phone into your charger and then into the auxiliary input in your stereo. If the audio becomes fuzzy and distorted, then you can be pretty sure that your phone’s battery might not be enjoying whats happening. Swap that power source out for one with proper insulation, and the audio should be crystal clear.
Calibrate your phone’s battery level indicator about once per month. You can do this by running your device until it dies... (0% battery)
The leave it alone for five hours, before fully charging it. This will enable your device to report the battery correctly.