Related
Unfortunately I left my Nexus 7 charger in a hotel room a month ago and it has not yet been handed in. Consequently I have had to buy an off the shelf charger. One I tried stated that it was rated at 2 AMPS, and it does work, but at about 1.5-2x the charging time as the stock charger. I also noted that when using that charger the Nexus system did not say it was charging, although it obviously was.
I just obtained another charger rated at 2.5 AMPS and it performs exactly as the stock charger. Has anyone else noted this - that if the charger outputs less than 2 AMPS the Nexus 7 does not notify the use that it is charging and does so at a much slower rate?
Larry
My understanding - the charger has to let the device know it supports high current mode. Otherwise the Nexus limits it to 500 ma, which is correct for a cable plugged into a computer.
Sent from my Nexus 7 using xda app-developers app
rmm200 said:
My understanding - the charger has to let the device know it supports high current mode. Otherwise the Nexus limits it to 500 ma, which is correct for a cable plugged into a computer.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
This is true; the same method applies to samsung chargers. There has to be 5v on one of the data lines as well to let the device now it should change to high-power mode.
Search for a tutorial on what to solder together inside of the charger or buy an official samsung charger of at least 1A (I believe Galaxy S2 chargers have that output).
Since the battery life of the phone is quite poor it's only natural that i would like to charge it when i'm on class or with an usb cable when im using my laptop, using other usb chargers/cables, but on the manual says (of course) that we should only use it with the lg charger that comes in the box or an official nexus 4 charger .
It kinda sounds like bullsh*t until i remember what happened with my motorola milestone, sometimes when i used another charger the screen started doing crazy things, like swipping the homescreens by itself , oppening apps, until i charged it for at least a few minutes with the official charger, some months later my digitalizer died, so you can imagine how traumatized i am, but then i think what's the point of trying to make a standard out of microusb chargers if we can only use the official charger? what do you guys think?
I find battery life to be very good.
I have been using an old HTC charger on mine without issue though. I suspect the 'only use LG charger' is to cover themselves in case you kill the device with a cheap and badly made knock off.
Sent from my Nexus 4 using xda app-developers app
AW: We can only use the LG charger?
I have literally problems in draining my battery, running Franco's Kernel and Minco v6.
Anyway, using another charger should be no problem. I used the charger of my Asus Transformer and a mobile charger in my car without issues.
sent from my francoed Nexus 4
templope athletes,"
Feel free to use any USB wallcharger you'll find.
I tried some i had laying around (HTC, iPhone 5, iPad) and they all charged without trouble.. :good:
Yeah, I've used a 1A HTC charger with no issue. I accidentally left my lg charger at a friends house and had to use what I had.
the battery life is good, better than s2 with its extended battery, i was wondering about this too as i want to use a sony rx100 at 2amps to charge while im traveling.
on page 168 of the service manual it states the max charging current is set at 900mah, over voltage protection upto 28volts
The current should be controlled by the phone, not the charger. Therefore there shouldn't be a problem with more powerful chargers. The voltage has to be correct, though
The phone certainly regulates the power it takes.
If you are really worried about the chargers just flip them over and read the output ratings. Most of them are exactly the same these days.
Sent from my Nexus 4 using xda app-developers app
I use my GNex charger with no problems.
P.s- the battery life on this device is outstanding, you just need to find the kernel that works well on your device
Sent from my Nexus 4 using XDA Premium HD app
Any USB charger will work. Note the output current on the charger though, as that will impact how fast it can charge and whether or not you can have the screen on while you charge. The LG charger that comes with the phone is 5v 1.2a, an iPhone charger (at least as of the 4S when I got mine) is 5v 1a and an Amazon Kindle charger is 5v 0.85a. The USB 2.0 spec calls out a max power output of 5v 0.5a.
EnIXmA said:
I use my GNex charger with no problems.
P.s- the battery life on this device is outstanding, you just need to find the kernel that works well on your device
Sent from my Nexus 4 using XDA Premium HD app
Click to expand...
Click to collapse
+1 for the GNex charger.
[email protected] said:
Any USB charger will work. Note the output current on the charger though, as that will impact how fast it can charge and whether or not you can have the screen on while you charge. The LG charger that comes with the phone is 5v 1.2a, an iPhone charger (at least as of the 4S when I got mine) is 5v 1a and an Amazon Kindle charger is 5v 0.85a. The USB 2.0 spec calls out a max power output of 5v 0.5a.
Click to expand...
Click to collapse
I'm confused , the lg nexus 4 charger is 5.0v 1.2A and my galaxy nexus charger which i use sometimes with my nexus 4 is 5.0V 1.0A , what does this mean? what's the difference?
My Nexus 4 is on the way so i cant comment on that but my Sony Xperia S acts differently to different USB leads even on the same charge unit. It might charge at 500mAh or 950mAh (on a charger rated at 850mAh), the screen might be fine or it might act erratic and it all depends on the lead plugged in to the charger
I used Samsung/blackberry chargers and they worked. Not sure if they were as efficient though.
I pretty much use anything but the LG charger and have been doing so over a month. So feel free to use any quality charger you like.
I also charge of my Philips Qi pad and off computer USB ports.
As long as it's providing stable power or anything close to it, it's good.
Just be careful with (fake) cheapo chargers. Those might cause issues with the touchscreen going haywire while charging off them. I've also read that about some car chargers, but so far my cheap 2A 2port USB car charger that came of DX is working fine for me.
YMMV of course. But there is no need to stick to just the LG charger.
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
Click to expand...
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.
Click to expand...
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.
Click to expand...
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
Click to expand...
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
Click to expand...
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.
Click to expand...
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
Sent from my GT-I9505 using Tapatalk 2
reservin said:
Anyone tried using phone while charging? Mine charges 1% per hour while surfing web
Sent from my GT-I9505 using Tapatalk 2
Click to expand...
Click to collapse
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?
Sent from my GT-I9505 using Tapatalk 2
Hello,
Just noticed that S4 comes with 2A charger while S3 come with 1A charger. I have place where I charge a bunch of different devices in the house which has micro-USB port and all of them are using 1A. I'm wondering what repricussions I can have if I add 2A charger to the mix and will charge old devices with 2A charger and vice a versa charge S4 with 1A?
artisticcheese said:
Hello,
Just noticed that S4 comes with 2A charger while S3 come with 1A charger. I have place where I charge a bunch of different devices in the house which has micro-USB port and all of them are using 1A. I'm wondering what repricussions I can have if I add 2A charger to the mix and will charge old devices with 2A charger and vice a versa charge S4 with 1A?
Click to expand...
Click to collapse
It will be fine, I charge all my devices from my ipad 3 10W/2A @5V wall charger. Bringing one charger while travelling reduces the clutter I have to pack.
Basically if your devices are working properly, they will only pull the power they need to charge. The S4's 2A charger is capable of supplying up to 2A's but is fine supplying less if the device your charging uses less.
The actuall charging circuitry that controls the battery charging is in the phone or device, not the wall unit. The wall unit is simply the power supply.
As acruxksa mentioned, you'll be fine since the device is in control of how much power it pulls from the charger (as long as it is working properly, that is). The only thing that you may notice is when you are charging the Galaxy S4 with the older 1.0A charger it may charge slower.
Have a great day.
krsskenn said:
As acruxksa mentioned, you'll be fine since the device is in control of how much power it pulls from the charger (as long as it is working properly, that is). The only thing that you may notice is when you are charging the Galaxy S4 with the older 1.0A charger it may charge slower.
Have a great day.
Click to expand...
Click to collapse
And if in doubt, look at it this way; the phones will charge off a USB port on a computer - this is 500ma (0.5A) - so as long as your device will charge off a usb port, it will charge off a wall charger that supplies at least that much amperage. New iPads will not charge off USB ports, but it doesn't hurt them to plug them in.
Charging time
artisticcheese said:
Hello,
Just noticed that S4 comes with 2A charger while S3 come with 1A charger. I have place where I charge a bunch of different devices in the house which has micro-USB port and all of them are using 1A. I'm wondering what repricussions I can have if I add 2A charger to the mix and will charge old devices with 2A charger and vice a versa charge S4 with 1A?
Click to expand...
Click to collapse
Yes it does but as the previous reply said it takes longer.
I used the old s3 cable at the office charging s4 but it takes long time to get the battery % up. It usually takes my s4 from 1% to 100% within an hour and half time but with the s3 cable it takes good 3 -4 hour or so.
I wouldn't take the s3 cable for travelling though. it will take too long for me to charge in coffee shops and what not when I am moving around the destinations.
So far, I am very impressed with the charging time of S4.. Love the device.
acruxksa said:
It will be fine, I charge all my devices from my ipad 3 10W/2A @5V wall charger. Bringing one charger while travelling reduces the clutter I have to pack.
Basically if your devices are working properly, they will only pull the power they need to charge. The S4's 2A charger is capable of supplying up to 2A's but is fine supplying less if the device your charging uses less.
The actuall charging circuitry that controls the battery charging is in the phone or device, not the wall unit. The wall unit is simply the power supply.
Click to expand...
Click to collapse
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
alphadog00 said:
And if in doubt, look at it this way; the phones will charge off a USB port on a computer - this is 500ma (0.5A) - so as long as your device will charge off a usb port, it will charge off a wall charger that supplies at least that much amperage. New iPads will not charge off USB ports, but it doesn't hurt them to plug them in.
Click to expand...
Click to collapse
That's how I rationalized using my One S chargers
---------- Post added at 08:52 PM ---------- Previous post was at 08:43 PM ----------
artisticcheese said:
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
Click to expand...
Click to collapse
Good question. Maybe because the higher amp batteries have not been out that long compared to all the years smartphones have been sold. They may start making 3A only. Also, companies may sell less chargers if one size fits all. No need to buy a new one when you change phones.
I do know when I charge the S4 with my One S charger it does take longer, as mentioned, and very slow off USB. The One S charger end also gets somewhat warm charging the S4. The S4 charger does not. That would lead me to believe it is pulling a little more current than charger was designed for. But, probably not an issue. USB does not get warm. But, is a good quality one and heavily shielded.
artisticcheese said:
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
Click to expand...
Click to collapse
In case someone buys a 10amp cheap charger and ends up frying the phone. Thus Samsung protects it self from dummy users and from million dead phones warranty swaps.
I'm using a USB car charger that puts out 2.1amps and its super fast. USB 2.0 on my laptop takes a while to charge it. Some times I use iPhone charger with Nokia cable or with WD hard drive USB wire. They all work just fine but charge at different rate.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
artisticcheese said:
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
Click to expand...
Click to collapse
The bigger the charger, more expensive it is. Manufacturers want to save money.
Wow. Way to necro this thread...
Necro--
Damn, thank goodness for Urban Dictionaries for OLD farts--
Had to look that one up
so if i will charge my S3 with a 2A charger i wont see any major change from the 1A, correct? I have the Boeffala kernel and at the AC charge is set to 1,1A so if i have a 2A charger i guess it should charge faster.
The phone will only draw the maximum it can. The 2A charger will charge it at the same speed as the 1A charger.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Red_81 said:
The phone will only draw the maximum it can. The 2A charger will charge it at the same speed as the 1A charger.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Maybe it is a placebo effect, but when I charge my S3 with my S4's charger it does seem faster. Quite a few of my coworkers that have used my S4 charger at work also thought it charged faster.
Either way I have charged my S3 with it very often with no I'll effects, so OP you should be safe to do so.
Sent From My Spiderman,Ironman,Red,Dark Blue,Green, GreyedOut BadAss Themed I337
Install battery monitor widget and you will be able to see how much it's pulling on each charger
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
I have an Anker Astro 3 12000mah powerbank as well as Xiaomi 10400 & 16000mah. All seem to charge the S6 as fast as the stock Adaptive Fast Charger. I usually charge when I'm down to 40% and all these powerbanks when connected to the S6 show as cable charging. The time to hit 100% though is exactly the same as the fast charger.
So guys don't throw away your existing powerbanks and dole monies out for some unknown brands that claim to be QC2.0 compliant.
PS: I have a two year old Samsung 9000mah powerbank that released along with the S4. Will try if that QuickCharges the S6 tonight. The S6 is picky with the cables though. I get the QuickCharge only with good quality cables. I use an original Samsung cable that came with a spare 2amp charger and an Anker cable. Work perfect.
Sent from my SM-G920I using XDA Free mobile app
Does it say Fast Charger connected on the statuus bar?
Sent from my SM-G920F using Tapatalk
DrearierJester1 said:
Does it say Fast Charger connected on the statuus bar?
Sent from my SM-G920F using Tapatalk
Click to expand...
Click to collapse
No. As I mentioned it says Cable Charging. But the time taken to charge is the same as the stock charger. Fast.
Sent from my SM-G920I using XDA Free mobile app
I've been using this 10,000mAh power bank from Aukey, which supports Quick Charge 2.0 and the S6 does display Fast Charging Connected. I just haven't compared charge time between this and the stock charger yet. All I can say is they're both blazing fast. According to this other thread, the stock charger has 5V and 9V outputs, just like any QC 2.0 charger, therefore, they should work the same. I'm not sure about non-QC2.0 compatible power banks though.