Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
musheercmr said:
Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
Click to expand...
Click to collapse
The only visible difference should be in charging time - AC adapter should do it much faster providing the current of up to 1A (1000mA), much less then that to be expected from PC USB port.
I'd rather search for some rogue app draining the battery, maybe betterbatterystats would be a good place to start.
there wont be any dfference, the battery will get a charge from either but usb as mentioned wil ltake longer to charge
if i got 21hrs from my battery i would not be asking ANY questions!!..
musheercmr said:
Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
Click to expand...
Click to collapse
USB ports are low power
your wall plug has a higher output than your computer USB port
PC USB = 5v 0.5amps
wall plug = 5v 1amp
so a wall plug will charger faster.
use SetCPU governor, I am sure you will get 3 to 4 days (moderate usage). same as mine.
My final finding; If we charge through PC-USB, it will take time to charge and same time, will discharge rapidly. because I charge my phone yesterday with AC-adapter and now my batter level is 13 hours with 95%. While I charge from PC-USB it was 20 hours with 15%. (all time are in moderated usage, and no any apps are not installed during this period)
I don't know how this, but this is my experiences.
I get the same results that's why I don't charge it through my usb port.
I agree with your conclusion that low-power charging just doesn't last on the Note. I was travelling and mistakenly took the wall adapter for my Plantronics BT headset instead of the Sammy adapter. It charges basically at the same rate as the computer usb. It took forever to charge, which was expected, but drained EXTREMELY quickly (10% / hour with almost no usage). By the end of the trip I was keeping it plugged into the charger whenever possible.
Back home on my original charger the phone is behaving like normal again. (84% after 8 hours with BT on and about 20 minutes of talk time / display on)
Related
I seem to get a longer battery life (first step down from 100%) if I charge my MDA C4 using the supplied charger as opposed to a charge from a PC using the USB lead.
If I charge using the charger, and just use 2G, I get approx 14 hours before the first drop in the batterymeter. From the PC it happens well before 11 hours.
Is this possible or am I just imagining things?
tmohammad said:
I seem to get a longer battery life (first step down from 100%) if I charge my MDA C4 using the supplied charger as opposed to a charge from a PC using the USB lead.
If I charge using the charger, and just use 2G, I get approx 14 hours before the first drop in the batterymeter. From the PC it happens well before 11 hours.
Is this possible or am I just imagining things?
Click to expand...
Click to collapse
To get full capacity phone needs 5v 1000mA (= 1A) input, which is the charger outputs. If the PC USB output cannot pump that amount it might last shorter....
a PC's standard USB port only outputs 500mA (0.5A)
i think the supplied charger may be 2A (cant check atm), i know the official HTC Car Charger is 2A.
Cheers,
mugglesquop said:
a PC's standard USB port only outputs 500mA (0.5A)
i think the supplied charger may be 2A (cant check atm), i know the official HTC Car Charger is 2A.
Cheers,
Click to expand...
Click to collapse
My original HTC charger (Model: TC P300) outputs 5v 1A
Interesting. I'll check the HTC charger when I get home.
However, Would this not mean that it would just take longer to charge the battery?
(Analagous to having to fill a bucket of water from a 1/2" bore pipe as opposed to a 1" bore pipe).
Artyaw said:
My original HTC charger (Model: TC P300) outputs 5v 1A
Click to expand...
Click to collapse
My original HTC charger is at 5V 2A.
What I did notice is that charging form USB takes much longer than charging off the wall.
Sergio PC said:
What I did notice is that charging form USB takes much longer than charging off the wall.
Click to expand...
Click to collapse
It will do, should not effect the overall charge (as long as it is left long enough!)
tmohammad said:
(Analagous to having to fill a bucket of water from a 1/2" bore pipe as opposed to a 1" bore pipe).
Click to expand...
Click to collapse
Correct, actually water analogy is quite often used here
yes i thought that...
phone charge lasted longer with the mains charger than the usb on pc
and usb pc takes ages to charge full
So I guess we'll all be using our wall chargers now? As the charge is faster and some believe better!
Make no sense to me as to why the charge of the PCs USB cable is not as good as from the wall....
However the slow charge time bit of it makes sense
Car Charger
I have huge problem with my car charger. I use Noname USB car charger, that worked perfectly with my Trinity. Now, when i connect my Diamond it sometimes connects and disconnects the device to USB twice in two seconds and so if the battery is low message about battery fklashes in an out. SOmetimes it does not happen and the battery is charging normally. When i start IGO8 while battery is full and Diamond being charged, it sometimes LOOSES power and after couple of hours it gets out of power even when charged. Sometimes it doesnt happen and the device is charging properly, but very very slowly. When i turn device off, it charges normally. I tried two different chargers and get the same results. But none was HTC original.
It's irrelevent how the phone was charged. If the battery is full, then its full ,and it will last the same period of time irrespective of how it was charged.
Charging rates will vary depending on input current, but once the touch sensor light stays on, then the battery is full.
Is anyone else having this problem?
Any work around to having it actually charge the battery up?
it uses electricity faster than its recharging its crap! ive never known any device do this. When im low on battery and have it connected to my computer i have to switch it to the mains for 30 mins. Its terrible, bad design fault
I have the same problem with my Toshiba G900 (WVGA too). Very slow on USB, but normal fast at standard charging or car charging. USB is very bad for this at all.
it really depends on what you're doing with the phone, its unlikely to charge when busy, its a lot faster at charging than my old advantage, im actually impressed!
have you made sure that you've not ticked turn off charging whilst connected to a computer?
charged in under 3hours whilst on connected to ubuntu yesterday.
don't u guys realized how many amperes that a USB socket and your PC (as well as the power supply) allowed compared to a wall socket?
usb chargin usually is never worth it.
I don't understand your disappointment, usb voltage/ampere are the same for all devices, even for my touch when used as modem doesn't supply enough power for charging seriously
Does it even charge at all via USB when the X1 is on idle? If it does, how long does it take from low to full?
I left my X1 idle on USB for 6 hours, it was nearly flat when I put it on and after 6 hours it was still 1 bar below full. Whereas my LG Viewty fully charged in about 2 hours. My Universal only takes about 3 hours
So in my case, comparing the three phones, you can see where my dissapointment originates from.
vinokirk said:
I left my X1 idle on USB for 6 hours, it was nearly flat when I put it on and after 6 hours it was still 1 bar below full. Whereas my LG Viewty fully charged in about 2 hours. My Universal only takes about 3 hours
So in my case, comparing the three phones, you can see where my dissapointment originates from.
Click to expand...
Click to collapse
But remember the size of battery the x1 has maybe the 1500 comes into play.
BuddyLee said:
But remember the size of battery the x1 has maybe the 1500 comes into play.
Click to expand...
Click to collapse
Well, of course. Xperia's battery is bigger. That's like complaining that your glass fills up faster than your pool. (may be exaggerating a bit )
BuddyLee said:
But remember the size of battery the x1 has maybe the 1500 comes into play.
Click to expand...
Click to collapse
True tho, point taken.....dissapointment level aleviating.....slightly....
After my phone beeped saying the battery was low, I plugged it into my USB hub (which has a mains supply). An hour later I removed the cable and the phone beeped again.
At least with my P990 I was able to gain some charge, it seems like with the X1 it just stops the battery running down.
Try it after Softreset again. I had this problems with an old ROM on my G900 too. After some time it did not charge. Softreset fixed it.
also yall are forgettin that it's a different kinda battery in the x1 compared to other phones it's ising a li-po compared to a li-ion (which is in most other ppc phones) it charges slower via usb because it's tryin to keep from exploding any extra surge that the usb gets could cause your phone to explain
the li-po is more likely to explain given the way it's built
when you use the wall chargers and car chargers the connection are ment fron rapid rechargin of the device unlike the usb which is for data transfer mainly
when you think about the charge time just think about how long it actually takes for your phone to run out of battery life from what i heard it's close to like 1.5 to 2.5 days compared to normal ppc phones that last probably a day at the most with out recharge
hope this help
Keland44 said:
also yall are forgettin that it's a different kinda battery in the x1 compared to other phones it's ising a li-po compared to a li-ion (which is in most other ppc phones) it charges slower via usb because it's tryin to keep from exploding any extra surge that the usb gets could cause your phone to explain
the li-po is more likely to explain given the way it's built
when you use the wall chargers and car chargers the connection are ment fron rapid rechargin of the device unlike the usb which is for data transfer mainly
when you think about the charge time just think about how long it actually takes for your phone to run out of battery life from what i heard it's close to like 1.5 to 2.5 days compared to normal ppc phones that last probably a day at the most with out recharge
hope this help
Click to expand...
Click to collapse
Err... this is not true for TP. TP lasts about 2 days on average from normal daily usage and it doesn't have problem charging via USB. Given that the port used is USB 2.0 not 1.1 or below. Took about 2~3 hours from nearly flat to full charge if I remember correctly. I have to try again just to make sure. But definitely not taking 6 hours.
I would've thought that X1 shouldn't have any problem with charging since the battery is only like 150mA more than TP. Also, if it's charging faster from the AC adapter, the same result should be expected when charging from USB port. Doesn't matter the type of battery used. Unless if X1 somehow limits the charging current on purpose when PC USB port is detected. Even though USB 2.0 is actually capable of giving out 1.5A maximum. Try to soft reset it after charging for about 2~3 hours. See if the battery gets fully charged. Some TP users are experiencing this issue as well when the battery meter only updates to fully charged after doing soft reset. Experienced users might want to try and measure the current drawn when charging via USB 2.0 port.
Hope this helps.
On my xperia if i put it in sleep mode, it charges no problem using USB.
the advantage used to charge slower from a usb port, that is until someone found out that the standard ac charger had a short across two of the usb pins, and with a quick mod of a usb cable charged quickly from the usb on a computer
however my x1 charges the same from usb or mains, I use the same cable, but can't see what difference that makes.
there are three conditions that affect charging speeds, whether device is on or not, off charges much faster, whether screen is on or not, screen off charges faster, whether theres good radio signal, if like at home, reception is dodgy it can really draw a lot of juice.
Just for comparison sake, I did a test on my TP just to confirm. Charging via USB 2.0 while it was on idle with screen turned on, from 4% to 100% it took about 2.5 hours and its battery feels warm.
Ok lets clear out some things.
A standard PC USB socket can provide maximum 500mA (milli-Amperes) Current at 5 Volt. Ideally that means that a battery rated at 1500mAh (milli-Amperes-hour) can be charged around 3 hours (minimum). Now, subtract the current that the xperia needs while operating and you will get how many milli-Amperes are left for charging.
Of course in order to know how many current the xperia needs to operate you need to connect an ammeter in series, also keep in mind that current needs change depending on usage (wifi, 3g, bluetooth etc).
So in essence if you USB port is not very good and can't give fully 500mA and the xperia needs a great amount of current to be on, then the charging time can be quite long. A simple formula could be:
xperia_Battery_mAh / (USB_Current - xperia_Current)
Now the mains charger is rated at a greater value than the USBs 500mA. Actually I don't own yet an xperia (waiting patiently to arrive), so I don't know how much current the charger can give. Can someone see what is the rating of the charger?
From other devices I own (that can charge through USB) I've seen that their chargers are rated as high as 2 Amperes. Obviously these devices never draw so much current, it is just a failsafe or it was more cheap for them to bundle a charger like that. But they could draw 800mA of current which the USB port is unable to do so.
Keep in mind that while charging with USB might be longer, generally it can be safer for the battery (longer battery life and more charge/discharge cycles), although I am not so sure about this with excessive charging times in a USB port.
Within the last few days I've notice that my phone is charging at unbelievable slow rate via the wall charge that was supplied. I usually get a full charge in maybe 1-2 hr depending on what percentage the battery is at. Once it is fully charge it hold the charge, but when it drains then it would take like 6 hrs to do a full charge. I've tried to soft reset it to see if the percentage goes up, but it stay the same. I turn off the phone to let it charge, but it still charge at a slow rate. I'm wondering is it time to purchase a new battery.
What do you think? And is there any other test I can do?
The slow charge could be one of a few things... One could be the battery as you suspect (and probally most likely).. Also, are you chargign the phone in a diffrent place? If the battery gets too warm from lack of circulation, it will not charge (or just charge much mroe slowly).. It also could be that your USB port is starting to go... IF you have a stand alogn abattery charger available for it (like one on a docking station) try to charge it on there and see if it still charges as slowly.. Another though could be if you are charging it in your car while using GPS or Wifi.. IF those are left on, they suck down the battery a lot faster and thus it uses the electricity as fast as it can pull it in.. I woudl suggest powering the phone down while charging.. that could also help...
i always charge it in the same spot since i got the phone. i dont have a dock charger. its weird last night i was at 49 and i turn off the phone completely and plug it in. woke up today the orange light indicating that it was charging still was on. turn on the phone and it was at 55 percent. WTF!!!!!!!!!!
I guess that touch pro 2 better come out soon.
itzstevo said:
i always charge it in the same spot since i got the phone. i dont have a dock charger. its weird last night i was at 49 and i turn off the phone completely and plug it in. woke up today the orange light indicating that it was charging still was on. turn on the phone and it was at 55 percent. WTF!!!!!!!!!!
I guess that touch pro 2 better come out soon.
Click to expand...
Click to collapse
i have the same problem. Its either your USB port or the charger, so simply go buy a new charger and if it still does it the port is bad....if not, problem solved
or put it in your computer to charge, that avoids buying a new charger.
usb charging is always slower then wallplug charging as usb can only provide
5v * 0.5Amps == 2.5Watt
where
wall charger can provide as much watt
as the charger is made to
but of cause the pda will only draw as much
amps as it was made to support
Hi,
I got a new S3 mini I8190, unlocked sim free, 8GB. I plugged it into my existing USB charger (single port 750mA, Sony) while it was switched off and it charged to 100%. All fine. So, I set it up with sim card, SD card and apps and then charged it again, this time the phone was switched on. It appeared to be charging fine, but the charging topped out at around 87%. It wouldn't go any higher. I tried a load of testing, killing services, switching off wifi, using a different battery etc etc. However, it turns out that any USB charger will charge this phone, but only up to a certain level. So a 500mA charger would only take it to around 75% charge. The charger that came with the phone (rated at 750mA) fully charges the battery as does a 1A supply I have.
Question, is this normal for this device or have I got a duff phone?
Thanks in advance,
Niall
i also have a 500mA charger. charge to 100% but it's taking almost a day to complete if the device is on
Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:
Don't think the charger and cable are faulty as they work on your mobile. Generally whenever I charge my Samsung galaxy tab s2 using a different charger it shows a notification if the charger plugged in is slow. If it didn't show this I don't see why it would take so long other than the charger your using has a lower output causing it to take a lot longer than usual to charge.
Every android device I have will sometimes not charge fast enough - it doesn't matter what charger I'm using. If I catch that the charge is slow I just unplug it and replug it a it'll be normal again. I think the "smart charge" goes crazy sometimes.
I had the same problem on the tab s2 8''. It was because the motherboard broke. They fixed it under warranty.
When I had this problem I couldn't attach any external device (usb, playstation controller) through USB. Try if you can
I don't have the original charger anymore to compare on my 9.7. I use anker potable batteries to be free of wall sockets. It isn't 2.0. In battery monitor widget, really good app, shows charge anywhere from 1200-1600mA 20% per hour while in use during charging. 5 hours total. I think with screen off I get 30%. I get 10 hours of screen on time zero loss with it off over night. Using 5.1
It could be the motherboard. I know with laptops charging starts to mess up a few weeks before it no longer works at. The connection between the USB and board weakens over time/use.
moustafasadek11 said:
Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:
Click to expand...
Click to collapse
Sounds normal. The big Lion batteries in these devices are just weird at time. Running one down to 0 is a good way to kill the battery permanently. Let it charge slowly and then keep it above 20-30% from now on. Should improve over time.
I think its a myth you shouldn't let the battery get low. As long as the battery itself says I'm at zero at the correct voltage then zero is perfectly fine. I'm not an expert here but at 5% battery I'm at 3.6v and will turn off in a few minutes after that. I think batteries are manufactured to safely go down to 3.2 before saying no more. Need to charge.