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Hey guys i just wanted to knw if ur phone lasts the same when charging using the laptop and using the wall charger bcoz mine is nearly 60% ie. lasts 40% less when i charge using wall charger.
Does anybody else is facing this too ??
That's an interesting observation, ill have too check. Though the laptop would be a slow charge and a cleaner regulated current due to the power regulator in the laptop's charger
Sent from my X10i using XDA App
yeah laptop charging is nearly half or less than half speed of wall charging ..
there is no difference between AC or USB power from a PC, but charging it with a PC takes a lot more time, because your USB port has not the power/current
i usually always use the wall charger it came with. But i remember that sometimes when i use any other charger it either wont even recognize the cable or not charge at all specially car chargers
Is it just me or any one else experienced extreme slow charging on their Droid razr?
USB charging from my PC.. It was almost 3 times faster to charge my previous lg optimus 7 and blackberry storm.
Sent from my Motorola Razr XT910 using XDA App
Yes....... AND....
Those other phone don't draw nearly as much power as a Razr.
So the typical PC does not put out 750mA on USB because the spec says they only need to put out 500mA. If you are using the phone while connected to USB it may never charge. It won't drain either.
tech_head said:
Yes....... AND....
Those other phone don't draw nearly as much power as a Razr.
So the typical PC does not put out 750mA on USB because the spec says they only need to put out 500mA. If you are using the phone while connected to USB it may never charge. It won't drain either.
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Agreed. Wall charger is best.
Sent from my DROID RAZR using xda premium
I've not noticed anything out of the ordinary with USB charging vs. past phones I've owned, but have found it charges abnormally fast when connected to a wall charger.
Sent from my XT910 using xda premium
PC= trickle charge. its like trying to fill a bath tub with an iv drip
Lol.. Understood.. Off to the phone shop and get another wall charger then..
Sent from my Motorola Razr XT910 using XDA App
Or just get a USB-to-AC adaptor.
Sent from my XT910 using xda premium
Do you mean AC to USB adapter? That's exactly what I plasm to buy
Sent from my Motorola Razr XT910 using XDA App
vash_h said:
Do you mean AC to USB adapter? That's exactly what I plasm to buy
Sent from my Motorola Razr XT910 using XDA App
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Get a battery monitor app, put it on the charge, see how much charge is actually flowing to the battery... with a 1750 mAHr battery, you can guess the charging time..
From my packard bell laptop with USB charging it gets 850 milliamp...so charging time is around 2 hours.... from a Wall charger it gets 1100 milliamp, so 1.5 hours is enough....
From my HP laptop it has the charging of 450-500 milliamp so it takes around 3 hours...
I have used the manufacturer of the laptop because each USB chipset has its maximum power rating... USB 2 had 500 milliamp at max and USB 3.0 has 900 milliamp of power rating...... so it depends which chipset you are using and which port you are connecting to.....
If getting more confused, try the standard AC charger.....
Also, I think you should make sure to put your phone on airplane mode (or at least turn 4g off) and turn the brightness down while you're charging. This way, more power goes to charging and less to battery draining stuff.
AND if you're willing to spend a little cash, (or you buy your phones at Costco like me) you can get one of the multimedia dock thingies from motorola. It literally charges in 3 hours on there.
Lol.. A wall charger will do fine for me. I've been scouting for the dock, to use webtop application.. But I can't find out over here on Malaysia.
I did find a great widget, battery info, which when discharging, it will display percentage of battery left, and remaining standby time.
However, the best part is, when charging, out will inform you time left to achieve 100% charge.. Its really cool..
Sent from my XT910 using XDA App
vash_h said:
Lol.. A wall charger will do fine for me. I've been scouting for the dock, to use webtop application.. But I can't find out over here on Malaysia.
I did find a great widget, battery info, which when discharging, it will display percentage of battery left, and remaining standby time.
However, the best part is, when charging, out will inform you time left to achieve 100% charge.. Its really cool..
Sent from my XT910 using XDA App
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... i kinda gave up looking for one.... heck even trying to find the dock for the altrix is a pain... just need to modify the plugs and we can use webtop
Modify what plugs? care to share? I'm interested on this hack..
Sent from my Motorola Razr using XDA App
Math lesson!
The battery is 1750 mAh, that is milli ampere hours.
As such, it will supply 1750 mA, for one hour.
Charging is the same but backwards, 500mA is what the USB port on your PC supplies.
That gives 3,5 hours to supply the battery the required power, assuming 100% efficiency.
But lithium batteries need a trickle charge from 90% to 100%, so that last bit is usually performed in 1 hour, independent of what mAh the battery has.
So on our razr that last 175 mAh will always take one hour to charge.
So that means that we charge 1575mah at a fast speed, that leaves 3,15 hours to charge using USB, and 1 hour to top charge.
That'll give you 4 hours and 15 minutes through the computers USB. =)
vash_h said:
Modify what plugs? care to share? I'm interested on this hack..
Sent from my Motorola Razr using XDA App
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some dude just opened the dock and extended the plugs. the altrix dock plugs are on the side. he just extended them to the top
Sent from my XT910 using xda premium
Im probably not as heavy a user as some....but Ive noticed the same thing. I unplug my phone at 7:30 and plug it back in at 9-10 at night usually with 20% left and when I stay up late Ive noticed it takes seemingly forever to charge.
I believe it recommended it either the online manual or the quick start up manual to use the charger that it came with. It stated that other brands or 3rd party may not charge the RAZR fast enough resulting with slower than usual charge times.
I have even heard of some people loosing power while it was plugged in and being used. I believe the 3rd party chargers were to blame Like others have said, the USB charging taking FOREVER, a car charger is a little better but not much.
If you download Battery Indicator Pro (from the market) you can set an option on how fast you want the battery to charge via AC outlet or USB.
Will also give you a 1% increment battery display
The Motorola razr can support upto a 1000ma charger..... technically, it means that if u pop it in the wall charger it will charge at 850ma per hour... it will have a full charge in 2 hours.... but a USB port on the PC or laptop is capable of providing only 500ma, so theoretically, it will take more than 4 hours for a full charge....
Sent from my XT910 using xda premium
I just bought razr after owning SGS1 for over 1.5yrs.
the usb charging is unnormally slow! even compared to SGS1 which has 1500mAh.
with SGS1 I used to use it for usb tethering and it charges in about 5 hours to full WHILE TETHERING!
But on Razr idle phone takes around an hour for every 5-10% of battery which is a lot!
I am wondering if there is any kernel fix or workaround that speeds up the usb charging, because this is not natural.
4 hours or even 6 hours is very reasonable charging time, but anything more than that is a lot.
I am thinking there is something wrong kernel wise.
edit: even comparing to HTC EVO 3D which has almost same battery capacity [1730 vs 1750] charges a lot faster than RAZR. and I do mean A LOT!
Recently I traded my galaxy nexus for a galaxy tab 10.1. But whenever I plug it into a computer or an outlet there's a red x on the battery... it charges reallllly slow. I left it to charge for nine hours from an outlet while turned off, and it went from 5% to 55%. WOW. That's really slow. So I thought that the problem is the cable so I bought a new cable that came with a car adapter. And it worked like a charm in the car. However when I traded I kept the 3 pronged galaxy nexus charger. So anyways I arrived home happy, but I wanted to test it in the computer... Red x again. I tried the wall outlet, again with the x. I tried the wall outlet with 110v and 220v still red x. Then I looked at both outputs on the wall charger and car charger both had the same output which is 5volts and 1A. Then I looked at the input and the car charger was 12-24VDC and the wall outlet was 100-240v and 50Hz and 0.15A. I need help please.
I have 3.2 honeycomb and P7500.
I think that this is an internal issue software wise.
If you need anymore information don't hesitate to ask.
Thanks in advance
Sent from my GT-P7500 using xda app-developers app
On stock settings u wont be able to charge the device connected to ur computer and u will get the Red X on the battery icon! Therez a small tweak to activate that feature to activate charge on pc connect but u will loose the mtp connection. As far as this issue... Seems to be a battery proble. Still try to flash and get to stock to confirm.
Sent from my GT-P7500 using xda premium
What do you mean by loosing mtp? Also I'm a bit noobish at this because I just switched from ios. So can you dumb Down what you said a little. And what do you mean by "still try to flash and to get stock to confirm."
Also my problem is wall charging.
Sent from my GT-P7500 using xda app-developers app
I get that if I try use galaxy nexus charger, however if I charge my galaxy nexus with the tab 10.1 charger I have no problems, make sure your using the correct charger, and for the slow charging I have a USB extension cable if I use that it can take up to 12 hours for a full charge
By charger do you mean cable or outlet?
Sent from my GT-P7500 using xda app-developers app
simplest answer is that the red X means that you're not supplying enough voltage to your tablet. You need 2A (A = Amps), computer USB ports generally do 500mA (1/4 of what you need). Phones usually need less. So the reason your tablet won't charge off the phone charger is because it doesn't supply enough voltage; the phone does fine on the tablet charger because it's just oversupplied (don't worry, your phone won't be damaged by this!)
So what you need is:
1) an original charger for this particular tablet (the cable probably isn't the issue, but I've seen cables that can't transmit the full voltage. The nook color is a good example of this)
2) a 2A charger - can't promise any particular ones work though...
3) (and this is the one you should do): You're on XDA. This is a place for folks who root and install custom ROMs on their devices. Most of the ROMs have USB charging built-in (in the Kernel; don't worry about what that means). Install a custom ROM (I'd suggest AOKP). Problem solved, plus you've increased both performance and functionality of your device exponentially. If you're not willing to do this, XDA probably isn't the place for you anyways.
Ayouby said:
By charger do you mean cable or outlet?
Sent from my GT-P7500 using xda app-developers app
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The outlet , the one for my tab is twice as big as my Gnex one, I guessing they both give out different power, get the official charger!! like I said I can replicate that any time I want by using the tab cable with my Gnex outlet,
Thank you soooo much
Sent from my GT-P7500 using xda app-developers app
I found a solution to a problem that was really vexxxxing me. One of my chargers was working and the other (longer lead) all of a sudden started showing the red cross. Ahhh. The solution (http://www.androidtablets.net/forum...galaxy-tab-10-1-not-charging-brand-new-3.html) was to blow very hard on the 30 pins of the charger and hey presto - started charging again without the red cross.
There are solutions to this problem with quite a few custom ROMs. Task's ICS for example has this patched. I am quite certain there are others.
Hi, my s3 charges very slow. he's charging for about six houres now and he's at 43%...
Could it be the USB cable?
Heeeelp!!!
Sent from my GT-I9300 using xda app-developers app
Check your AC adapter, especially if you're using the travel adapter. If the connection is loose, it will think you're charging with USB. Go to your phone settings and make sure it says "Charging (AC)" and not "Charging (USB)"....unless you ARE charging with USB, then it's supposed to be slow...iono about 6 hours though...
sam-san said:
Check your AC adapter, especially if you're using the travel adapter. If the connection is loose, it will think you're charging with USB. Go to your phone settings and make sure it says "Charging (AC)" and not "Charging (USB)"....unless you ARE charging with USB, then it's supposed to be slow...iono about 6 hours though...
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Click to collapse
It says AC...
Check..
Are you charging from computer or the power point. Are you using the charger you got with your phone?
I had the same problem with my phone. Turned out it was the USB cable. Got it replaced from Samsung. You might want to check a different USB cable or a different charger. If you are trying a different charger do make sure the output matches with the stock charger. Also have you tried resetting it back to factory default?
Sent from my GT-I9300 using Tapatalk 2
Charging from powerpoint... wtf? After 4 houres he didn't charge at all... ?? Trying a new cable now!!
Replace
liobeir said:
Charging from powerpoint... wtf? After 4 houres he didn't charge at all... ?? Trying a new cable now!!
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Yep its definitely the cable. you should get it replaced :laugh:
A new cable fixed it! Srry for the panic!!!
Sent from my GT-I9300 using xda app-developers app
Battery charging incredibly slowly even after switching cables
I got the notification to update my I9300 to Jelly Bean yesterday and went ahead with it. The battery lasted an okay enough time, but I left it plugged in using the stock wall charger overnight. After almost 11 hours, it has only gone from 10% to 75% and I've seen it drop a couple of times while I've gone through the settings. Switching to another charger doesn't seem to make a difference and using the CurrentWidget app shows about 999mA all the time. I haven't rooted it or anything, so it has been difficult to find threads with the exact same issue. Is anyone else experiencing something similar? Thanks!
pazow said:
I got the notification to update my I9300 to Jelly Bean yesterday and went ahead with it. The battery lasted an okay enough time, but I left it plugged in using the stock wall charger overnight. After almost 11 hours, it has only gone from 10% to 75% and I've seen it drop a couple of times while I've gone through the settings. Switching to another charger doesn't seem to make a difference and using the CurrentWidget app shows about 999mA all the time. I haven't rooted it or anything, so it has been difficult to find threads with the exact same issue. Is anyone else experiencing something similar? Thanks!
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hi there i just got the same problem as you are getting right now im observing my gs3 and found the charging is very slow 1% evry 30mintues and that the condition is the brightness is low wifi and 3g is off i notice this happen just this morning after 24 hour of chargin using the AC charger from the galaxy s2. right now im using usb cable plugin to the wall out let and also tried plug it in to usb port still having slow charging issue my s3 is JB updated and that it is not rooted, before all this issue happen i was using the same usb cable tha im using bow 2days ago and i have no issue i could watch movie while plugin to the usb port or the wall outlet and im still around 94 to 97% charge with full brightness on and wifi and 3g is on, im in singapore and the outlet here is 220v. ill try to check if might be thusb cable is the issue r not.
my problem is the cable. i used my old samsung phone's charger and it worked!
Same here..
Same problem here, the i9300 charged almost nothing through the night. It recognised the charger as AC. After I woke up, I just took the cable out and reinserted it, then it charged way faster the short while before I went to work. I read somewhere that phones with jelly bean installed OTA over gingerbread could have this problem? I can't really say if it's the charger, the cable or the phone that is the culprit. I have previously had a problem with getting the phone to accept my car charger as well..
The cable you use makes a huge difference.
Best to use the original cable, using an old Nokia cable also works fine.
Be ware of 3rd party cables that for some reason dont deliver sufficient juice to the phone and then it charges very slow....
I guess I should add that I used the original cable and charger. I'll come back with a post if I experience more problems.
Sent from my GT-I9300 using xda app-developers app
Guys so I have this dell streak for which my wife left the charger at her sister's house which is very far off and the battery is completely out of charge. I was trying to charge it through USB port and even with Iphone charger by using dell USB cord but it is not charging and not turning on. I have read before that when the battery is flat you cannot charge through USB port. Is there any way around it? Let me know please I cannot use the phone....
you mean when you first connect to usb no sign of live at all? it should show some sign of live after a few seconds connecting to usb port..
Maybe a bit radical but... have you considered tearing apart an old usb cable and connecting it to the battery for a few minutes? Someone else should say if this is a terrible idea or not, but in my (ignorant, maybe?) mind sound like an option (being no other options available, of course)...
ag82 said:
Guys so I have this dell streak for which my wife left the charger at her sister's house which is very far off and the battery is completely out of charge. I was trying to charge it through USB port and even with Iphone charger by using dell USB cord but it is not charging and not turning on. I have read before that when the battery is flat you cannot charge through USB port. Is there any way around it? Let me know please I cannot use the phone....
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That was an issue with the Streak 7 but the 5" has no such issue. If it won't charge via USB then your problem is either a bad battery, bad cable or bad port... it should charge just fine via USB
Sent from my cm_tenderloin using Tapatalk 2
I have been in a similar situation, using a dell battery, cable, and a sufficiently powered usb port, so I wouldn't be so sure about the issue not being also present in the 5 inch model...
Sent from my Dell Streak using xda app-developers app
europeancity said:
I have been in a similar situation, using a dell battery, cable, and a sufficiently powered usb port, so I wouldn't be so sure about the issue not being also present in the 5 inch model...
Sent from my Dell Streak using xda app-developers app
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More than likely a bad port and or bad battery. But charging is not a known issue with the 5. I've worked on nearly a hundred here in Costa Rica as I'm about the only person here with knowledge of them and discharging to flat zero is a practice I do on each one I service and not charging via USB was only an issue when there was a hardware problem.
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