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Ok I really need your help now. My nook is suffering from PBD. The battery dies at 10 percent. In addition, the touslchscreen input gets very choppy, almost unusable at lower percentages. Also when charging and using it at the same time, the battery still drains. Im living in europe so I cant use the original wall charger, I'm using the one from my nexus s instead. Any suggestions? Thanks in advance!
Sent from my Nexus S using Tapatalk
May sound silly- get a travel piug converter kit. I believe the wall wart.can take 240 volts (but confirm that first.)
Aloha,
cap
capidamonte said:
May sound silly- get a travel piug converter kit. I believe the wall wart.can take 240 volts (but confirm that first.)
Aloha,
cap
Click to expand...
Click to collapse
This is totally retardet. I searched the whole city and finally bought an all in one power adapter compatible with about 30 countrys and ridicolously huge (and expensive). A cheap usb charger with enough amper seems not to exist. Still I have this problem with the touchscreen acting somehow wierd at low battery. Whats wrong?
Sent from my NookColor using Tapatalk
Hi,
Nexus 7 charger ouputs 2A.
Is it safe and ok to use it to charge Galaxy Nexus, Nexus S, and HTC Desire?
I am thinking more in the long run, if it does not brake the phones.
Thanks
It should not hurt anything.My daughter charges her Droid 4 with my charger every day.
It'll charge it really slow since phone chargers are 1A. Everyone will have their opinion on this but my opinion is I wouldn't use a phone charger on the N7....it could over heat due to it charging slow. But I'm sure you'll hear others saying a slow charge is better so....
Sent from my Nexus 7 using xda premium
dirtyhamster73 said:
It'll charge it really slow since phone chargers are 1A. Everyone will have their opinion on this but my opinion is I wouldn't use a phone charger on the N7....it could over heat due to it charging slow. But I'm sure you'll hear others saying a slow charge is better so....
Sent from my Nexus 7 using xda premium
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I was asking the other way around.
To use Nexus 7 to charge my phones. But the previous user just answered, thanks James.
When traveling, I want to carry just one charger for all my devices.
Sent from my Galaxy Nexus using xda premium
gogol said:
Hi,
Nexus 7 charger ouputs 2A.
Is it safe and ok to use it to charge Galaxy Nexus, Nexus S, and HTC Desire?
I am thinking more in the long run, if it does not brake the phones.
Thanks
Click to expand...
Click to collapse
Yup, it's fine, because a standard charger is, or used to be, 500 mAh, at 5 volts.
Some chargers are more mAh, like 700, and some are even 1 A.
If a charger is 2A, and your phone only draws 500 mAh, that is perfectly fine, because it's only drawing a quarter of what the charger can produce. In this case, the charger probably won't even get warm.
Neither my Sensation nor my wife's Sensation XL has died yet from using the Nexus charger
What mvmacd says is correct - just because the charger can supply 2A, it is the device that decides how much current it draws from the charger.
dirtyhamster73 said:
It'll charge it really slow since phone chargers are 1A. Everyone will have their opinion on this but my opinion is I wouldn't use a phone charger on the N7....it could over heat due to it charging slow. But I'm sure you'll hear others saying a slow charge is better so....
Sent from my Nexus 7 using xda premium
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I actually find the charger that came with my razr does the job fine and its rated at 850ma. Other lower power chargers i have are slow though.
I doubt a slow charge would lead to overheating or else connecting to a pc would cause this too.
I think for chargers its a case of trying them to see how well they work.
Sent from my Nexus 7 using Tapatalk 2
gbroon said:
I actually find the charger that came with my razr does the job fine and its rated at 850ma. Other lower power chargers i have are slow though.
I doubt a slow charge would lead to overheating or else connecting to a pc would cause this too.
I think for chargers its a case of trying them to see how well they work.
Sent from my Nexus 7 using Tapatalk 2
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Click to collapse
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
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Click to collapse
Care to explain why Google says you can charge your device with a 500 mAh charger [standard USB port]? ["with the screen off"]
Won't it severely reduce battery life and burn out the motherboard of the USB? Oh, really? Google just forgot about that part when they were writing the instruction manual?
:silly:
MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
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Click to collapse
Science generally proves things with facts and figures. From a forum point of view, a link is your minimum effort here
MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
Click to expand...
Click to collapse
Modern devices and chargers shouldn't have this problem because of built-in regulators. A smartphone won't try to draw more than it can handle and chargers won't try to supply more than they can handle (unless they're very cheap).
I have been N7 charger on phone with no problem so far. I wonder about the statement about the phone not drawing more than it needs though. I replaced the battery in my TB after 9 months due to low life and swelling. I'm pretty sure the swelling came from leaving the phone on a car charger all day, even after the battery was full. If my phone had the ability to stop taking the charge it didn't need, this wouldn't happen...
Sent from my Nexus 7 using xda premium
My opinion still stands....I don't trust using anything other than the charger that came with the device. 6th post down makes perfect sense to me.
http://forum.xda-developers.com/archive/index.php/t-1370215.html
Your battery was likely defective. My phone literally stays on the charger all day when I'm not out.
gogol said:
Hi,
Nexus 7 charger ouputs 2A.
Is it safe and ok to use it to charge Galaxy Nexus, Nexus S, and HTC Desire?
I am thinking more in the long run, if it does not brake the phones.
Thanks
Click to expand...
Click to collapse
If the phones also charge at 2A then you should be fine. If the phones charge at lower amps (say 1A or 1.5A) then I wouldn't recommend using it everyday as it may reduce the battery efficiency. If it's an emergency go ahead and use it.
There's no harm in using a higher current charger with a lower current phone because the charger is not what's actually charging the battery, it's the phone, and the phone will limit the charging current. You can confirm this with a multimeter. The charger can't force the phone to draw more current than it was designed for. This would be different if you were charging the battery directly with a dedicated charger because then the charger itself is directly controlling the charging current.
MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
Click to expand...
Click to collapse
Nope, just nope.
Sincerely, an electrical engineering student.
Sent from my Nexus 7 using Tapatalk 2
anyone know that
if the wireless charger is not charge the nexus 4
is it still consume power, or do not consume any power until the nexus 4 connect again?
Well, the LEDs on the wireless charger needs power...
Sent from my Nexus 4 using Tapatalk 2
i'm pretty sure it does. kind of like leaving your phone adapter in the outlet. still drain some battery.
I have measured the LG charger and it is negligible (averaging less than 0.15 watts).
Rather minimal, I imagine.
Solutions Etcetera said:
I have measured the LG charger and it is negligible (averaging less than 0.15 watts).
Click to expand...
Click to collapse
you get the official nexus 4 wireless charger pad?
ygvuhb said:
you get the official nexus 4 wireless charger pad?
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Click to collapse
No... I am not aware that it exists yet. As I said, I measured the LG charger.
I received my Nexus 4 in the mail yesterday and I have been charging it while in the car sometimes. Has anyone experienced the back of their Nexus 4 becoming hot while charging the phone inside a car? I'm using a Griffin Car charger and an HTC USB cord from one of my old phones (I've used the charger and cord for other phones, MyTouch 4G and HTC Sensation 4G, without a problem. When I charge the phone with the LG charger or any other wall charger (inside my house) the back of the phone doesn't seem to get warm. Could it be the USB Cord is the issue? Didn't think that would be a problem but I'll try a different one tomorrow. Just wondering if anyone has had a similar experience.
did you use your phone while charging? i'am thingking about navigation?!
mine gets a bit warm while charging, but not noteable if it is uncovert, and it gets warm while google maps runs, both together makes it quite warm, plus, putting it in a carholder where its back is covert...
but nothing you should worry about, other phones do the same...
You don't need to worry until the battery gets above 60°C. Li-po batteries can be damaged above that. Monitor the temp while charging in the car
My back of phone is hot whenever I'm charging! Lol :thumbup:
dicky82 said:
did you use your phone while charging? i'am thingking about navigation?!
mine gets a bit warm while charging, but not noteable if it is uncovert, and it gets warm while google maps runs, both together makes it quite warm, plus, putting it in a carholder where its back is covert...
but nothing you should worry about, other phones do the same...
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Click to collapse
No, I wasn't using navigation but I was playing music via the music player.
Sent from my Nexus 4 using xda app-developers app
estallings15 said:
You don't need to worry until the battery gets above 60°C. Li-po batteries can be damaged above that. Monitor the temp while charging in the car
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Click to collapse
What app do you use to monitor battery temperature? I've never really paid attention to the battery temperature before, this is also the first device I've had without a removalable battery.
Sent from my Nexus 4 using xda app-developers app
After further review, I have realized it just isn't warm when I'm charging it in my car. It also happens when I'm using it (sending texts, phone calls and browsing) and when its charging in the house. The temperature will get to around 51C (used the system tuner app). Has anyone else experienced the back of their Nexus 4 getting warm during normal use and charging? Just trying to figure out if this is a defect or it's normal for the device.
Sent from my Nexus 4 using xda app-developers app
It's normal if you're using stock voltage. I undervolted my Nexus 4 and it rarely gets above 35°C off of the charger.
estallings15 said:
It's normal if you're using stock voltage. I undervolted my Nexus 4 and it rarely gets above 35°C off of the charger.
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Click to collapse
How do you "undervolt" it? I just picked the phone up off the charger (after not using it for ten minutes) and the battery temperature was 36C. This was using the charger that came with the phone.
Sent from my Nexus 4 using xda app-developers app
mwilliams05 said:
How do you "undervolt" it? I just picked the phone up off the charger (after not using it for ten minutes) and the battery temperature was 36C. This was using the charger that came with the phone.
Sent from my Nexus 4 using xda app-developers app
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You have to unlock the bootloader, root, install a kernel that supports undervolting and lower the voltage that the CPU uses. You see, each chip is different. When creating the stock kernel they figure out what voltage range all phones will work on, then add some to be safe. The higher voltage = more heat. You experiment a little to see how low you can go and have a stable device and leave the settings. It's easier than it sounds.
estallings15 said:
You have to unlock the bootloader, root, install a kernel that supports undervolting and lower the voltage that the CPU uses. You see, each chip is different. When creating the stock kernel they figure out what voltage range all phones will work on, then add some to be safe. The higher voltage = more heat. You experiment a little to see how low you can go and have a stable device and leave the settings. It's easier than it sounds.
Click to expand...
Click to collapse
I was having the same issue and I never thought of lowering the voltage. The thing runs like butter anyway, so it won't hurt for it to slow down just a tad so it doesn't get to 50C.
Thanks.
So is it me or does the s4 charge really really slow ?
is this the same for everyone ?
any fixes ?
gremlininthesystem said:
So is it me or does the s4 charge really really slow ?
is this the same for everyone ?
any fixes ?
Click to expand...
Click to collapse
How long does your phone charge from low to full? Mine is around 2 and 1/2 hours maybe? Im using my Nokia 808s USB charger though. havent tried charging it with the included white charger, cable is too short for me.
gremlininthesystem said:
So is it me or does the s4 charge really really slow ?
is this the same for everyone ?
any fixes ?
Click to expand...
Click to collapse
Hi,
What is your charge time?
Mine is 2 to 2 and a half hours.
Which battery and/or charger are you using? After coming from the S2 I have noticed a large decrease in charging time with my S4, so this is very surprising to me.
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
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Click to collapse
Well, laptop's USB port is not a charger - it's too weak for such a large battery.
gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
...*facepalm*. You're not using original charger and you're complain that the one you use doens't works so well? Do you know that original charger is pulling 2000mA out, while your usb-port is pulling between 300mA and 500mA (depends if it front or back usb-port and the quality of usb port). Do the math, 2600mAh battery and 300mA / h. Full charge should take: 2600:300 = more than 8.5 hours.
With original charger S4 recharges from 0 to 100 in 1h 49minutes. If you take a solar charger it will charge even slower (like 48 hours for 0-100%).
Next time try to use your brain before complaining.
oliver005 said:
...
Next time try to use your brain before complaining.
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Click to collapse
no need to be rude. Not everyone knows that USB voltage varies.
Zymesh said:
...Im using my Nokia 808s USB charger though. havent tried charging it with the included white charger, cable is too short for me.
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Click to collapse
Your Samsung power brick has the cable physically attached to it? If not, you can just use a longer cable with the Samsung power supply.
The included power supply is 2 Amps, whoever is getting long charging times, make sure you use either the original Samsung power supply, or comparable in amperage supply.
Mine charges in 2 and a half hours.
Mine takes 2 to 2.5 h to charge from 0 to 100 percent. You should only use the new white charger, it's more powerful than the black one from s3, it's output is 2.0A ,old one is only 1.0A. Newer use other chargers as they may mess up your battery or phone.
Sent from my GT-I9505 using xda app-developers app
kreoXDA said:
Your Samsung power brick has the cable physically attached to it? If not, you can just use a longer cable with the Samsung power supply.
The included power supply is 2 Amps, whoever is getting long charging times, make sure you use either the original Samsung power supply, or comparable in amperage supply.
Mine charges in 2 and a half hours.
Click to expand...
Click to collapse
I have to check the amps but based on google the Nokia Charger is at 1.3 Amps. I need to remind myself to switch the short Samsung to longer Nokia cables.
Is it safe to get a higher Amp charger, the one that the iPad uses to charge my S4? No drawback execpt for a faster charging time right?
Zymesh said:
I have to check the amps but based on google the Nokia Charger is at 1.3 Amps. I need to remind myself to switch the short Samsung to longer Nokia cables.
Is it safe to get a higher Amp charger, the one that the iPad uses to charge my S4? No drawback execpt for a faster charging time right?
Click to expand...
Click to collapse
Take it this way, grilling meat takes for example 45minutes to cook completely. You take it to some powerful furnace like 2000degrees for 5minutes then what do you expect from it to give you back? Well cooked meat or some burned meat outside and maybe raw inside?
Sent from my GT-I9100 using Tapatalk 2
put it this way... the s3 comes with a 700ma charger. it charges a bit slow. and has a 2100mah battery.
the s4 comes with a 2 amp charger. thats 2000ma. it doesnt charge slowly if you use this charger. i personally am going to pop it on this charger when i get home from work and then keep it on my 700ma charger overnight... no reason to waste that powerful output, it will simply waste electricity.
make sure:
1. you use the charger that came with it
2. you use a cable thats as long as (or shorter than) the stock charging cable. longer usb cables tend to charge the phone slower.
also keep in mind usb ports charge any phone slowly. the s4 will charge even slower on them because the battery is oversized compared to most.
I'm using note 2 charger and if I surf Web while charging, literally it is not charging at all.. battery is not going up or down.. Note 2 was not like this.. i could charge battery even if I play 3d game..
Sent from my GT-I9505 using Tapatalk 2
u r right. but may and im pretty sure its just a software issue.
---------- Post added at 09:02 PM ---------- Previous post was at 08:59 PM ----------
fade2green514 said:
put it this way... the s3 comes with a 700ma charger. it charges a bit slow. and has a 2100mah battery.
the s4 comes with a 2 amp charger. thats 2000ma. it doesnt charge slowly if you use this charger. i personally am going to pop it on this charger when i get home from work and then keep it on my 700ma charger overnight... no reason to waste that powerful output, it will simply waste electricity.
make sure:
1. you use the charger that came with it
2. you use a cable thats as long as (or shorter than) the stock charging cable. longer usb cables tend to charge the phone slower.
also keep in mind usb ports charge any phone slowly. the s4 will charge even slower on them because the battery is oversized compared to most.
Click to expand...
Click to collapse
wow... what a science expert... first time i heard that longer cables charge slower... LOL
u funny dude.. there is no such thing like that buddy!
its just a software issue. S4 is just released and the chipset is very new. u people should wait for sometime...its a matter of few firmware releases from samsung for S4 and all the issues will be resolved. just like the latest issue resolved the over heating issues.
gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
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Click to collapse
:laugh: u made my day bro :good:
gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
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Click to collapse
USB is too low a voltage to charge a modern smartphone all that quickly, my S4 take 2.5 hours roughly to full charge on the stock charger.
androidizen said:
USB is too low a voltage to charge a modern smartphone all that quickly, my S4 take 2.5 hours roughly to full charge on the stock charger.
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Click to collapse
Voltage is exactly the same. It's amperage that you're thinking of.
Sent from my Nexus 7 using Tapatalk HD
Anyone tried using phone while charging? Mine charges 1% per hour while surfing web
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reservin said:
Anyone tried using phone while charging? Mine charges 1% per hour while surfing web
Sent from my GT-I9505 using Tapatalk 2
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Im using the white 2amp charger. It doesnt go down even when watching movies. Are you using the charger that came with your s4? There might ba a problem with your s4?
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