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Some chargers slower than others

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
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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).

[Q] HELP! Using Nexus 7 Wall Charger on Nexus 4?

Hi, there. Can someone help me on this issue please, I am new here.
I have a Nexus 7 Wall charger at 5V 2AMPS and I want to use it on my Nexus 4 5V 1.2A. Would it be okay to do so, without damaging the battery? Does the kernels control how much current goes to the Nexus 4?
I have no choice but use the Nexus 7 Wall charger because the one that came with Nexus 4 was defected. I called Google but they said I would have to return the whole thing, but I don't want to since, who knows, the Next one may have a bad phone instead.
Google Play told me using other phone adapter would be fine, but they didn't know about Nexus 7 Wall Charger.
It would be great if someone could give me some advice, Thank You!

p233asw said:
Hi, there. Can someone help me on this issue please, I am new here.
I have a Nexus 7 Wall charger at 5V 2AMPS and I want to use it on my Nexus 4 5V 1.2A. Would it be okay to do so, without damaging the battery? Does the kernels control how much current goes to the Nexus 4?
I have no choice but use the Nexus 7 Wall charger because the one that came with Nexus 4 was defected. I called Google but they said I would have to return the whole thing, but I don't want to since, who knows, the Next one may have a bad phone instead.
Google Play told me using other phone adapter would be fine, but they didn't know about Nexus 7 Wall Charger.
It would be great if someone could give me some advice, Thank You!
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It will work, most phones would limit the power draw from the source to make sure battery charge at the proper rate. If you use a custom kernel with fast charge enabled, you will degrade the battery quicker.

I've used about 6 different chargers on this, gnex, and others including the nexus 7. They all work fine, but slower ones just charge slower.
Sent from my Nexus 4 using Tapatalk 2

We can only use the LG charger?

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
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+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.
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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.

Portable Battery Charger in Canada

Ok so I tried to search but the function is down for some reason.
I have been looking at Portable battery chargers for my Nexus 4 but amazon.com does not like Canada and pretty much all the "well known" ones aren't shipping here.
I was looking at these two:
http://www.memoryexpress.com/Products/MX42716
http://www.memoryexpress.com/Products/MX42172
Besides the obvious capacity differences, anyone have any experience with either and their Nexus 4s? 1A should be enough for most smart phones but I tried out a charger for a diff phone (not sure which one sorry) on my Nexus 4 and was getting no charge which I found very strange as it was still a 5V/1A output charger...
Any help would be great.

http://www.123inkcartridges.ca/accessories-product/MCH_603.html 3000mah, ships in canada. ZNOODA usually makes decent portable batteries.. Will be ordering mine soon.

i have a 5000mah charger from monoprice. it charges at 1a and really is 5000mah since i was able to charge my Nexus 7 fully with it. Monoprice also ships to canada for $5.

the charger for the Nexus 4 is 5v/1.2A. For the best results get a charger with a 2A output (usually reserved for tablets).

HideYoKids said:
the charger for the Nexus 4 is 5v/1.2A. For the best results get a charger with a 2A output (usually reserved for tablets).
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Aftermarket chargers rated for 2.1a is designed to only output that much current to apple products, you will not get that much to any android device. I have a few chargers and external batteries that have a 2.1a usb port and none of them output more than 1a. I've tested with the GN. N4, N7 and Transformer. Android and apple have different ways that let the charger knows how much current is needed. The charger i linked has a 2.1a port too...

Turns out the Nexus 6P can be charged via Quick Charge afterall

It was disappointing to find that the new Nexus devices don't support Qualcomm's Quick Charge 2.0. I would have thought after all of the demand, especially with the Nexus 5 that Google would make it a requirement. So I saw this article on Droid-life and thought I should share as a general PSA to everyone. They did tests and found that the only quick/rapid charger that can charger nearly as well as the more pricey stock charger is Tronsmart's Type C car charger.
Unfortunately I can't post as links as I've been a lurker for too long and not enough posts, but they have it over at droid-life if you want to check it out. Someone could probably even comment it for me.

http://www.droid-life.com/2015/10/19/nexus-6p-nexus-5x-quick-charge/

Except it charges at about half the speed of the dedicated 15W/3A USB-C chargers.

I bought one of those tronsomart car chargers last week. Seemed like an adequate charger until I can get a suitable one that can supply 3A. The fact that it had a USB port so my wife can plug her iPhone into it sealed the deal. It's definitely going to be better for me than the car chargers we have now, that's for sure.

Get this. I've had 2 of them for a year or so and they charge my N6 faster than any QC2 charger I have. No usb c, so if you really want that you are SOL but I don't think that it will matter
MPOW 6.0Amps 30W Dual Rapid USB Port Car Charger with Xsmart Technology for Smartphone https://www.amazon.com/dp/B00PNW4AFG/ref=cm_sw_r_other_awd_wh4jwbW5G4TB4
Sent from my SM-N900T using XDA Free mobile app

Except it charges at about half the speed of the dedicated 15W/3A USB-C chargers.
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I must be missing something? Down the bottom at Update 3 it says that the Tronsmart was almost equal to the stock charger and one of the tests has the stock at 2642mA and Tronsmart at 2511mA.