Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English
You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app
Evergreen74 said:
Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English
Click to expand...
Click to collapse
You must use a 5V AC USB Adapter and better no LESS than 1A
for Fast Charge.
AC Adapter I Use:
iPad AC Adapter 5V 2.1A at Work
PlayBook AC Adapter 5V 1.8A at Home 1
Original Nexus 4 AC 5V 1.2A at Home 2.
Our Nexus 4 will Draw around 0.8A when Batt lever at 0% - 80%,
then around 0.5A at 80%-95%, Final State 95%-100% will draw 0.2A roughly.
When 100%, Nexus 4 will use the AC power & the Current "A" show on phone
will like 2mA (0.002A) when idling.
** 1A = 1000mA
As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.
Sfkn2 said:
As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.
Click to expand...
Click to collapse
Why do you say not to go under 1.2A? Charging from a laptop is at .5A. I've been using a 1A charger since day one. Haven't experienced any issues with it.
Charging at a lower amperage shouldn't hurt anything, just charge slower. All you have to do is make sure it's a 5V charger. Amperage shouldn't matter but a lower amp charger will charge slower. As for a higher amp charger, the phone will only draw the amount of power it needs to charge so using 2A charger won't hurt anything either.
Also 2mA is 0.002A not 0.02 A
wilsonlam97 said:
You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Since the charger doesn't actually regulate the charging itself (the phone does this) it doesn't matter how many amps it can supply, could be 100 amps, no worries. As long as it is 5V, the phone will draw as many amps as it needs.
Since the supplied charger is 1.2A rated, it's fair to assume that the phone will never actually try to draw any more than that, so there will be no benefit in going higher.
Going for a lower current charger will likely extend the charge time.
I use a 2.1 amp daily without any issues.
Sent from my Nexus 4 using Tapatalk 2
Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!
Evergreen74 said:
Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!
Click to expand...
Click to collapse
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.
There may be one other thing to consider when selecting a third party charger. In the Nexus 7, the device looks for pins 2 & 3 (data) of the USB plug to be shorted in order for it to draw full current. If this pins are open (or have a load across them as is the case with iPhone/iPad chargers), the Nexus 7 will assume it is plugged into a computer and limit its draw to 500MA.
Not certain the Nexus 4 behaves the same way but would assume so.
setzer715 said:
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.
Click to expand...
Click to collapse
setzer715, thanks for the answer... I think I will be using the Xperia P charger at work...
Thanks all for your help!!
I want to make this case clear. According to my Charging log,
Here is some key point.
Nexus 4 Max Draw Rate at Fast Charge Mode is around 800-900mA,
even you use a Charger that rated at 1A (iPhone Tofu), 1.2A (Original),
1.8A (Playbook), 2.1A (iPad).
Fast Charge Mode must be with Charging Cable with 2&3 pin Shorted,
or the charger itself have the 2&3 pin already shorted.
Therefore, 1A is a Sweet spot for getting Charger & Charging Time for
Li-Po/Li-Ion/Ni-MH Batt charging.
If you use under 1A Charger, eg 700mA or 500mA, it will take much longer
to charge the batt but no harm as well. Just too slow only.
The stock charger that came with my phone sucks, I use one from my epic 4g touch (gs2)and it charges much better
DEVICE: Nexus 4
KERNEL: Franco r95
ROM: PROJECT Extinct Life Event
jlear3 said:
The stock charger that came with my phone sucks,
Click to expand...
Click to collapse
Why you say so...? What's wrong with it...?
Talon88 said:
Why you say so...? What's wrong with it...?
Click to expand...
Click to collapse
Left a phone on a charger all night with a long (10ft) cable and it couldn't even charge the phone over night. I know a 10ft cable will slow things down but my gs2 plug has no problem charging my phone. Search around and you'll find a few fail stories about the stock LG charger.
Sent from my Nexus 4 using Tapatalk 2
I just got a new car charger which has two ports. 2.4A and 1.0A. The 2.4A is "designed" to charge tablets and 1.0 is for phones. I bought this thinking that it would charge my S5 faster, but it doesn't seem to charge at all. It charges all other devices like my iPad, tablet, iPhone, etc... but not the S5. Does the S5 have some amp protection, preventing it from being charged by this?
it doesnt charge my girlfriend s5 too . i bought a power block which have 3 2.4a port 1 smart usb 2.4a and smart usb 1a it will only work on the smart .
i tried charging with ipad charger dont work . portable charger that is 2amp it work. Note 2 stock charger work too . the verdict i have is you cant use any charge that is above 2.0a.
Not true , I charge with my iPad charger just fine.
Also I'm pretty sure the charger doesn't push 2.5amps,
It just means it should be capable of supplying that if the device tries to take that much.
The device plugged into it only draws the current that it can.
What CAN happen with portable chargers is that when the phone nears 100%, it goes Into trickle charge mode with low
Current, and then the portable charge thinks it's done charging so turns off, and the phone never hits 100%. That's why they have a special port for android/iphone on some of them.
@f1ux
Are you using stock kernal or custom ? because seriously i tried for the whole day . it just cant work. i am on lastest stock fireware and kernal SG.
It worked fine with stock straight out the box last week and at the mo it's running 0x0 rooted
I charge mine with dual port car chargers 1a and 2.4a regularly. 2.4a is much faster. But I'm not sure if one or the other has an effect on battery longevity. Stock S5 out of the box with Rogers.
so i lost my fast charger which i didn't didn't use anyway as i kept fast charging unchecked in phone settings
now i got a new romoss charger which is a good charger AFAIK. it is rated at 2.1a, plugged it in and it took too long to charge. i downloaded an app called Ampere to measure the current and the maximum it gets is about 1000mA.
i thought the new charger was ****ty so i tried my friend's LG charger 1.8a and got the same results. tried another 2.1a samsung charger and nothing exceeds 1a.
is it something wrong with my phone or is it software related?
i'm using eRobot's newest rom with spaceX kernel (also tried googymax and suemax kernels). tried to check the fast charge option and again, same results.
any opinions or thoughts are much appeeciated
thanx
You need a Qualcomm Quick Charge 2.0 compatible charger in order utilize adaptive fast charging on your Note 4([email protected] & [email protected] output). Buy new Note4,Nexus 6,Motorola X Style charger. Also make sure your USB cable is undamaged/good quality, since not all cables actually support fast charging.
i dont need to use it as a fast charger, i just want it to charge with 5v 2a which the chareger is capable of
I use the grand 2 for now 1.5 years and recently i figured out that my phone drained it's battery faster but charging takes almost 4 hours.0_o
What can be the issue?
Btw:the combos used so far
Samsung charger 1A output org. Cable~4 hours
Adaptive fast charger org cable ~4.5hours
Samsung charger 2A sony power bank cable~4.7hours
Ipad air 1 12w charger output 2.4A org cable~5.2hours(0_o)
Generic charger from ebay output 1.5A generic cable~6hours
Rom used:Xosp 6.3
Please help as soon as possible
THANKS!
I am sorry but by mistake i clicked on the q and a thread option for grand 2 can it be changed???
Can i use 5v 2a charger to charge x compact
Always recomendeed charge with slow adapter, not fast. And also do not use phone charging time
Example 1150mAh, 1300mAh, 1500mAh or 1800mAh adapter