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I've tried to find the maximum current that the nexus will draw, without any luck.
some people have said that the galaxy s 2 draws a max of 1A because the phone itself says 1A, but thats wrong, as it says 1A on 3.7v, clearly talking about the input the phone draws from the battery... not the charging circuit... other people say the galaxy s2 limits current to 650mA for heat/safety reasons... I have no reason to believe or disbelieve this.
Getting back to my question, what's the max current that the charging circuit will take, I know the AC/DC adapter that came with my gsm gnexus is 1A/5V, but that may be more than enough, or not as much as the nexus could handle.
I ask because there are many 5v ac/dc converters that output more than 1A, some over 2A... would the nexus charge faster with this much current, and would it be good/bad for the battery?
this could be easily tested if someone has access to an EE LAB, giving the phone 5v, and seeing how much current it takes... would need a DC volt supply capable of >10W (5v/2A).
8steve8 said:
I've tried to find the maximum current that the nexus will draw, without any luck.
some people have said that the galaxy s 2 draws a max of 1A because the phone itself says 1A, but thats wrong, as it says 1A on 3.7v, clearly talking about the input the phone draws from the battery... not the charging circuit... other people say the galaxy s2 limits current to 650mA for heat/safety reasons... I have no reason to believe or disbelieve this.
Getting back to my question, what's the max current that the charging circuit will take, I know the AC/DC adapter that came with my gsm gnexus is 1A/5V, but that may be more than enough, or not as much as the nexus could handle.
I ask because there are many 5v ac/dc converters that output more than 1A, some over 2A... would the nexus charge faster with this much current, and would it be good/bad for the battery?
this could be easily tested if someone has access to an EE LAB, giving the phone 5v, and seeing how much current it takes... would need a DC volt supply capable of >10W (5v/2A).
Click to expand...
Click to collapse
I dont know the answer to your question but my nexus eats amperage like it is going out of style. I can charge from almost empty to full in about 90 minutes.
Sent from my Galaxy Nexus using xda premium
@rbiter said:
I dont know the answer to your question but my nexus eats amperage like it is going out of style. I can charge from almost empty to full in about 90 minutes.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Given the battery is 1850 mAh you are drawing a minimum of 1.85Ah/1.5h = 1.233 amps. Since your battery wasn't completely dead, you are drawing slighlty more.
But was the limit the Galaxy Nexus, or the charger? Also, if one were to use navigation or other power hog while in the car, the current draw should be greater without only some of that going to charge the battery.
[email protected] said:
Given the battery is 1850 mAh you are drawing a minimum of 1.85Ah/1.5h = 1.233 amps. Since your battery wasn't completely dead, you are drawing slighlty more.
But was the limit the Galaxy Nexus, or the charger? Also, if one were to use navigation or other power hog while in the car, the current draw should be greater without only some of that going to charge the battery.
Click to expand...
Click to collapse
if he has the GSM galaxy nexus, the battery is 1750 mah, and assuming his device was off or idle during this time, then the current you calculate is not a minimum, it's a maximum... if the battery was half full to start, then 90 minutes were spent charging half of the capacity, so the current was actually half of the amount you calculated.
to answer this question someone needs a nearly empty battery in a galaxy nexus, with the device off (just to be sure we are only measuring charging current, although most likely it is circuit limited, and not battery limited, so it probably wouldn't matter)...
Then they should try charging it with a 5V DC power source with unlimited current, with a way to monitor the current.
most charging circuits for these type of batteries are current limited, then voltage limited, so the battery must be close to empty so we are sure we are monitoring max current... the latter part of the charge is voltage limited and in the end is very small amounts of current.
I am getting a new usb 2.0 hub soon. I didnt know there was a bc 1.1 compliant device standard, aka battery charging 1.1, that allows charging at 1.5amps. But i think this applies to powered hubs, since usb 2.0 technically only allows 500ma, and of course charging from a computer will only allow 500ma. Samsung recent smartphones allow this type of charging, so im sure nexus can utilize it. And yes, sgs2 was limited to 650mah charging for some reason. I never followed up on if devs overcame the limitation. The sgs2 crowd turned me off from the device because of their elitist attitudes.
Crazy world, ay?
@rbiter said:
I am getting a new usb 2.0 hub soon. I didnt know there was a bc 1.1 compliant device standard, aka battery charging 1.1, that allows charging at 1.5amps. But i think this applies to powered hubs, since usb 2.0 technically only allows 500ma, and of course charging from a computer will only allow 500ma. Samsung recent smartphones allow this type of charging, so im sure nexus can utilize it. And yes, sgs2 was limited to 650mah charging for some reason. I never followed up on if devs overcame the limitation. The sgs2 crowd turned me off from the device because of their elitist attitudes.
Crazy world, ay?
Click to expand...
Click to collapse
yeah I'm trying to buy the best ac adaptor for my nexus, but finding info is difficult.. the one that came with my nexus is for europe, and is 5v/1A, but it may not be the optimal current. The market seems to have many adapters capable of 0.5A, 750mA, 850mA, 1A, and 2.1A (marketed for ipad)...
will the nexus benefit from a 2.1A ac/adapter even if it doesn't 'need' it?
The Nexus charger is rated at 1 amp. I'm using my Captivate charger at work, which is rated at .7 amps. I'm thinking just because the Nexus charger is rated at 1 amp, that doesn't meant the Nexus is actually drawing that much power. Anyway, the Captivate charger I have seems to work fine.
Any issues here?
8steve8 said:
yeah I'm trying to buy the best ac adaptor for my nexus, but finding info is difficult.. the one that came with my nexus is for europe, and is 5v/1A, but it may not be the optimal current. The market seems to have many adapters capable of 0.5A, 750mA, 850mA, 1A, and 2.1A (marketed for ipad)...
will the nexus benefit from a 2.1A ac/adapter even if it doesn't 'need' it?
Click to expand...
Click to collapse
Just get a 1amp charger. It is plenty, on the safe side and fast fast fast for the nexus. With a 1a Motorola charger I have it charges 1% a minute when I am not using phone. I got that powered hub yesterday. Charging the nexus off of it was about 1.5% a minute and I didn't see battery go above 33 degrees Celsius.
Sent from my Galaxy Nexus using xda premium
let me clarify that im not worried about what will "work" im looking for what's the ideal charger...
yes 0.7A will charge it, so will 1A, but the actual max current draw is still what I'm asking.
http://www.reddit.com/r/GalaxyNexus/comments/nvgt4/chargers_3000ma_worth_the_risk/c3cb636
http://www.reddit.com/r/Android/comments/nystt/galaxy_nexus_power_analysis_why_chargers_cant/
I measured the charging current at just less than 0.5A with the phone on and off. I too was thinking that a higher capacity charger would speed charging.
1 amp chargers are more than adequate. I did this check with the battery at 80%.
طوني تبولة said:
http://www.reddit.com/r/GalaxyNexus/comments/nvgt4/chargers_3000ma_worth_the_risk/c3cb636
http://www.reddit.com/r/Android/comments/nystt/galaxy_nexus_power_analysis_why_chargers_cant/
Click to expand...
Click to collapse
Thanks for these threads. I was curious, too, if it does any good or harm to my GN if I plug it into the 2.1A plug of my power bank.
not that i care if i break too but if there some way where i can use my 2.1 amp wall charger to fast charge my phone and use 2.1 amps rather than 1 a
I've heard that using different chargers can be bad on your phone or battery. I've only used the one that came with the phone but sometimes at my buddies houses my phones are low and need charged but never do, is there any truth to this?
Sent from my SGH-T999 using xda premium
It can be true. Depends on a few factors. The amount of volts that get sent through can be main the difference between chargers. Some have a higher volt rate which can mean a faster charge but could possibly cause the phone to over heat or may cause the battery to have a short life span. Some have lower volt rate which is the opposite obviously.
Yeah all in all you shouldn't worry that much, a battery life span still pretty long
Sent from my SGH-T999 using xda app-developers app
You're good bro stick with the original charger. Even if u use others its ok but as stated above its not like the original !!!!!!!!!!
Sent from my SGH-T999 using xda premium
It's not voltage it's amps.
it should'nt
ive used many different chargers for my galaxy s3. from nokia chargers to my lg g2x old charger. and my galaxy still has n amazing battery life. but it should not mess up the batter at all because they all use 9v charger so it should be fine
FWIW I use the stock block and cable when I am at home or moving data, but while I am at work, I have a Motorola block and a RocketFish cable. Takes a little longer but works just the same. Same setup for my past two phones as well.
In terms of battery life, you'll probably get a new phone before you get a new battery. I wouldn't worry about it too much.
************
Also @OP, I see you are from Cincinnati. If you ever need anything, just shoot me a PM and I can/will help you out if you need it face-to-face. There are a few of us in town that know each other and help out when needed.
Yeah I use the stock cable for charging and moving files as well... but use a mt4g charger when not in my bedroom... a universal usb car charger in the car... a universal usb wall charger when I need to at work... and friends random usb chargers when at their house (moto, samsung flip phone -theyre still out there- and htc one s)
Sent from my SGH-T999 using Tapatalk 2
psykhotic said:
It's not voltage it's amps.
Click to expand...
Click to collapse
Sorry dude, the VOLTAGE is what determines the amps.
The higher the voltage rating, the higher the current (amps) so obviously, the lower the voltage, the lower the current (amps)
You cannot control the current, it is a resultant factor of whatever the applied voltage is,
Kinda like if you open your water faucet 1/3 the way, you'll NEVER have full flow no matter what size garden hose you buy to use.
bobolinko said:
Sorry dude, the VOLTAGE is what determines the amps.
The higher the voltage rating, the higher the current (amps) so obviously, the lower the voltage, the lower the current (amps)
You cannot control the current, it is a resultant factor of whatever the applied voltage is,
Kinda like if you open your water faucet 1/3 the way, you'll NEVER have full flow no matter what size garden hose you buy to use.
Click to expand...
Click to collapse
You're both right, but psykhotic is right in this instance. ALL USB devices are 5v DC. Power (Wattage) is determined by the amps.
To answer the OP's question, anything that provides a USB style charging port will work. The phone will never charge faster than it wants to charge. What can happen is, if the charger is rated too low, it may not provide enough power to charge at the normal rate of speed, or even charge the phone at all.
Yeeaaa dude. No. Where are you getting a USB charger that's output isn't 5v?
When rooting the Galaxy S4 phone, it has been said on this forum that original USB cable must be used. I read people's posts where they said that Galaxy S3 cable did not work whereas using the S4 original cable that came with the phone worked.
I may have confirmed this the hard way when I also could not root the S4 until I used its original cable. The thing is, in addition to using the original USB cable, I also switched USB ports.
So is the cable itself different, or was it perhaps using a different port that made the difference?
I am not talking about low quality cables vs S4 cable, I am talking about genuine cables like the one that comes with S3, is there a difference between it and the S4 cable? I know the S4 charger is a 2 Amp charger, I know it's different and I am not talking about that, my question is about the cable itself.
No you dont need the original that is bs. I haven't used my original at all. I used the one from my S2 and S3 with no problem.
Sent from my SGH-M919 using Tapatalk 2
I have only used an amazon .99$ cable on all my phones. Never had a single problem. I leave the original cable and charger in the box.
Download "galaxy charging current lite"
Plug in each cable
You will see that different cables give you different voltages for charging. Ive only seen the highest (1900) with my original cable and that charges pretty quick. My s3 cable only charges at 1000 and my sisters crappy phone charger would only push 300 which is not enough to charge the battery.
Sent from my SGH-M919 using Tapatalk 2
Once again, multiple posts in Galaxy S4 threads mention to be SURE to use the original cable, especially when people have problems, and then they report problems resolved after using the original S4 cable that came with the phone. So several people that I've seen, including myself resolved problems after trying the original Galaxy S4 cable instead of the old ones, with one person specifically saying that even the Galaxy 3 cable did not work.
Judging by the post above, it is the cables themselves and not simply what they are plugged into (for example a new 2 amp power source vs older lower amp power sources or even different USB port).
So then the logical follow up question is HOW do you tell you are getting a cable that can match the original Galaxy S4 cable if nobody really lists the cable specs?
Thanks PostMeridianLyf for posting about that app. I just measured all the cables in the house. Some came in as low as 300, found three that came in at 1900, just like the original S4. I suppose the only way to tell is to test them after getting them. There should be an industry standard.
If you're going to charge the S4 overnight, is it actually preferable to use a 300 USB cord instead of the original 1900 cord because the charging would take (much) longer but would actually be easier on the battery life?
c627627 said:
If you're going to charge the S4 overnight, is it actually preferable to use a 300 USB cord instead of the original 1900 cord because the charging would take (much) longer but would actually be easier on the battery life?
Click to expand...
Click to collapse
I wouldnt think so. If you keep refreshing it you will see that the phone is able to vary the charge and will slow or stop charging the battery when its full.
Besides, its the stock charger for a reason and batteries are not too expensivd either. Just my opinion though, and i dont even think 300 would be near enough
Sent from my SGH-M919 using Tapatalk 2
How cheap batteries are is not the point.
If you use a speed charger on regular batteries they will not last nearly as long as when you use a charger that takes several hours to fill them up.
After you go to bed, if you are looking at a few hours of sleep, then it doesn't matter how long the charge takes, doesn't it stand to reason that given a choice, we should choose the slower charging process and extend battery life?
Just try it. But i know for a fact 300 wont even keep your phone on.
Sent from my SGH-M919 using Tapatalk 2
c627627 said:
How cheap batteries are is not the point.
If you use a speed charger on regular batteries they will not last nearly as long as when you use a charger that takes several hours to fill them up.
After you go to bed, if you are looking at a few hours of sleep, then it doesn't matter how long the charge takes, doesn't it stand to reason that given a choice, we should choose the slower charging process and extend battery life?
Click to expand...
Click to collapse
in theory and in a lab? yes it will extend the battery life by some statistically relevant amount.
in the real world? you would see a bigger impact from heat (like gaming, using the phone outdoors, etc) on the battery than a slower charging current.
Heat kills batteries, not a sub 1C charging rate.
I say BS! I have been using my old morotola razr v8 charging with all my phones ...
Sent from my SGH-M919
JUSMEJOSE said:
I say BS! I have been using my old morotola razr v8 charging with all my phones ...
Sent from my SGH-M919
Click to expand...
Click to collapse
I don't know what "all" phones means but this is a Galaxy S4 forum and if you use the app posted earlier to measure an old cable, and it happens to be a low current cable, you will not be able to Odin to root the Galaxy S4.
My Galaxy S4 did connect to my computer but I was not able to successfully root using Odin UNTIL I used the original cable which the app measured at 1900 vs. other cables which ranged from 300 to 600 to 900 to 1100. The same was confirmed by multiple users on this forum. Whenever someone has problems rooting Galaxy 4 through Odin, one of the first questions asked now is 'which cable are you using?'
I measured some old cables to match the original Galaxy S4 cable, but there is no way to tell unless you use the new 2 amp Galaxy S4 charger to send the current through and measure each cable using this app: https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Please read forum rules before posting
Questions and Help issues go in Q&A and Help section
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I know this is an old thread, but how are you guys measuring the charge current (not voltage as most people are referring to) on the s4?
This app measures it:
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
no problem here ..I used older cable.. my sgs 4 cable is still in the box.. I rooted and flashed philz recovery withnokd cable fine. on 2 dif. m919 phones.
Sent from my SGS 4
I use my 8f cable that I got on newegg when I was rooting my nexus one and my touch 4g I still use it on my sgs4 never had problem with it didn't really test the with any app or voltage
Sent from my SGH-M919 using XDA Premium 4 mobile app
The main issue here that people are referring to is the pins on the cables. Certain manufacturers are known to use extra pins in the connectors. These serve a few purposes which I won't get into. You may notice on those cables only reaching 300 mAh that the data transfer is also slower. On the factory one, the data transfer will be quicker.
That's all there is to it. Your phone will root just fine. Now, sometimes a crappy charger will really screw with the phone and battery and the only way to "reset" it so it works fine is to use the factory charger. Like when your phone says it's charging even though it's not plugged in.
As far as "trickle charging" a Li-ion battery (ours is a lithium ion polymer battery I think) its worthless generally. Trickle charging is an old trick use on lead-acid and nickel-cadmium batteries. Li-ion works in a totally different way. No real point exists for using that method on these batteries. You might as well charge fast and use your phone than waste time at 300 mAh. Your battery has a chip in it that takes care of all the dirty work. It maintains the proper charging current and will top off the charge as needed while it's plugged in - which is what a trickle charge would do if done correctly.
Sent from my SGH-M919 using xda app-developers app
PostMeridianLyf said:
Download "galaxy charging current lite"
Plug in each cable
You will see that different cables give you different voltages for charging. Ive only seen the highest (1900) with my original cable and that charges pretty quick. My s3 cable only charges at 1000 and my sisters crappy phone charger would only push 300 which is not enough to charge the battery.
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for this app! Just tossed out a bunch of cheap-ass USB cables that couldn't deliver more than 300 mA.
I got an original Samsung charger, looks just like the original charger I have for the SGS3 (same shape, cable & everything).
only difference is the output on it is 2.0A, while the output for my charger is 1.0A.
will it make a difference if i use this charger for my SGS3? just in case it can blowup the phone or something
666pluto said:
I got an original Samsung charger, looks just like the original charger I have for the SGS3 (same shape, cable & everything).
only difference is the output on it is 2.0A, while the output for my charger is 1.0A.
will it make a difference if i use this charger for my SGS3? just in case it can blowup the phone or something
Click to expand...
Click to collapse
No problem if the output is Always 5V.
2.0A only means the max power the Charger can send out. If the phone request max 1.0A, then the charger give it 1.0A. No difference in charging time, no difference at all.:good:
666pluto said:
I got an original Samsung charger, looks just like the original charger I have for the SGS3 (same shape, cable & everything).
only difference is the output on it is 2.0A, while the output for my charger is 1.0A.
will it make a difference if i use this charger for my SGS3? just in case it can blowup the phone or something
Click to expand...
Click to collapse
Well my fellow Israeli, I'm using 2.0A and it's been great so far.
Bought it in a "private store" and they gave me a 0.7 A charger. So after moving from 0.7A to 2.0A it did made a noticeable difference.
By the way, the 1.0A limit can be changed with a custom Kernel. Such as*Boeffla Kernel.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Better than the stock S3 charger. I'm using 2.1A charger. Charges up my S3 so fast. It charges 65% in 20 mins
QIQgame said:
Well my fellow Israeli, I'm using 2.0A and it's been great so far.
Bought it in a "private store" and they gave me a 0.7 A charger. So after moving from 0.7A to 2.0A it did made a noticeable difference.
By the way, the 1.0A limit can be changed with a custom Kernel. Such as*Boeffla Kernel.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
about the limit change, is it safe to play with such an option? didn't they place this limit for a reason?
but out of interest, how much faster can you make it charge if you change the limit?
Fast charging your battery is very similar to overclocking your cores. If it draws higher amperage and the temperature goes up it will shorten the life of the battery. Slower charging keeps the temperature low and lengthens battery lifespan.
Fast charge w/ High amps = High temps, charges fast, & shortens battery lifespan
Normal charge = Low temps, normal charge speed, & longer battery lifespan
Bottom-line, if you don't mind getting a new battery and want to charge your phone quickly, enable fast charge.
666pluto said:
about the limit change, is it safe to play with such an option? didn't they place this limit for a reason?
but out of interest, how much faster can you make it charge if you change the limit?
Click to expand...
Click to collapse
I agree with my friend up above me.
pretty sure that over heating your battery will degrade the battery's chemicals & with time your maximum capacity will decrease.
My personal routine is using another 2 Zero Lemon spare batteries with their external slow charger (0.6 A).
always got a spare in my wallet and it is saved from a possible "memory effect" syndrome which shouldn't be excited in lithium ion batteries, but a recent study by a Japanese guy shows signs of a memory effect.
No idea how much time I save by fast charging. I'll time it next charge for you.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Where can i get this charger?
Hey guys,
can you tell me, where i can get this 2A-charger for my S3? Preferably with a german plug...
Regards
Clark
Clark789 said:
Hey guys,
can you tell me, where i can get this 2A-charger for my S3? Preferably with a german plug...
Regards
Clark
Click to expand...
Click to collapse
there's no 2A charger for the S3. the one i have was originally for note 2 or something, i forgot. but you can charge the S3 with it...
if you have a regular 1A charger, then don't worry about it, it's the same basically
S3 is coded in the kernel to only charge at 1000ma.
You can override these settings with some kernels, but I wouldn't. Frying charging circuits are quite annoying.
It's for the S4. Note 2 chargers were black like ours.
Sent from my GT-I9300 using xda app-developers app
Hello Everyone,
I wanted a faster and better charger for my Nexus 5. After doing some research I came up with the following possibilities:
From Amazon:
http://www.amazon.com/Tech-Armor-Charger-Watts-Black/dp/B00CD0HGDE
http://www.amazon.com/iXCC-Charger-Charging-Samsung-Package/dp/B00FCISG6K
http://www.amazon.com/EZOPower-Charger-Adapter-Smartphone-Cellphone/dp/B00EDU5X6Y
All these chargers have 2 USB ports, which they are great if you need to charge two devices at once. They will charge 2.1A from one port and 1A from the other. My problem with all these is that they are bulky and two of them have ports that come out of the back. It can be difficult to use if you want to plug your charger lets say behind your bed or similar tight places. That is one of the reasons why I don't like the stock Nexus 5 charger as the USB cable comes out of the back and its only 1.2A
From eBay:
http://www.ebay.com/itm/OEM-BlackBe...o-USB-Compatible-Phones-Tablets-/200976069483
This charger is exactly what I'm looking for because its small, the cable comes out of the side, and the output is 1.8A which is greater than the stock Nexus 5 charger. Plus at $3.99 & free shipping for a new charger is not a bad deal. Since this is an OEM Blackberry product the quality is excellent. Cable is around 7ft long.
Bought me two of them, one for the office and one for home.
Will post my results as soon as I receive the charger. Will test how much current the Nexus 5 can pull.
Update with results:
http://forum.xda-developers.com/showpost.php?p=47468074&postcount=22
Update 2nd test:
http://forum.xda-developers.com/showpost.php?p=47501470&postcount=24
.
Won't phones and batteries only pull the number of amps they are designed to pull? I didn't think it mattered how many amps a charger could proveide as long as it has enough?
Evo_Shift said:
Won't phones and batteries only pull the number of amps they are designed to pull? I didn't think it mattered how many amps a charger could proveide as long as it has enough?
Click to expand...
Click to collapse
I had tablets chargers that I would use on my Nexus 4 and the phone would charge a lot faster than the stock charger that came with it. I'll do some testing and will report my conclusion once I receive it.
The Galaxy S4 charger works great and really fast.
Meh, the stock charger is 1.2A so that's what I figure the fastest it will charge.
I had an SGS3 and using my dad's Note 2's 2A charger, I was still only drawing out 1A, which is what the SGS3's charger came with.
The Nexus 5 comes with a 1.2 amp charger. I HIGHLY doubt it's actually capable of charging any faster than that (it'd be a lot of heat for such a small device).
Charging amperage is specified by the device not the charger. Value on a charger is the maximum amperage it is able to produce. This means that Nexus 4 or 5 will not get more than 1.2A even from a 2A charger.
If the phone is designed to charge at 1.2A, it will charge at 1.2A max. HOWEVER, not all chargers are 100% efficient. That means your phone may not charge at a constant 1.2A through the stock charger if it is not 100% efficient. That is why you notice faster charging speeds using a 2A charger.
If you don't believe me, get an app like battery monitor widget and look at the power input when you are charging.
This is what I use: http://www.amazon.com/Anker®-Dual-Port-Charger-Samsung-Motorola/dp/B00B8L36A6
Anker is a very good brand
cgg123321 said:
If the phone is designed to charge at 1.2A, it will charge at 1.2A max. HOWEVER, not all chargers are 100% efficient. That means your phone may not charge at a constant 1.2A through the stock charger if it is not 100% efficient. That is why you notice faster charging speeds using a 2A charger.
If you don't believe me, get an app like battery monitor widget and look at the power input when you are charging.
This is what I use: http://www.amazon.com/Anker®-Dual-Port-Charger-Samsung-Motorola/dp/B00B8L36A6
Anker is a very good brand
Click to expand...
Click to collapse
My Nexus 5 charges quickly with the charger that it came with. It is 1.2A. I purchased a new car charger that is also 1.2A now. It seems to work well.
mobileboost said:
My Nexus 5 charges quickly with the charger that it came with. It is 1.2A. I purchased a new car charger that is also 1.2A now. It seems to work well.
Click to expand...
Click to collapse
I actually just got my nexus 5 today so I can't comment on the included charger. I was talking about my old galaxy note and htc desire. There was a site that reviewed the efficiency of chargers but I forgot the name of the site.
I use my Nexus 7 charger (2A) and it charges way faster than the stock. They are only $15 on amazon too.
My HP chrome book has a charger rated at 3 amps. Charges the phone crazy fast. I remember seeing these threads and how people said it doesn't matter what the output is blah blah blah. It works. I just wonder what effect it has on the battery? I think its supposed to last longer if you charge it slowly correct?
I use nexus 7 charger. Takes around 15 min to fully charge at 70 percent
Sent from my Nexus 5 using XDA Premium 4 mobile app
Everyone is saying "its faster" but nobody has bothered to mention what faster is.
From 15%, I saw 100% charge in just 2 hours with Qi so I think these phones charge fast in general since Qi is only 1 am output.
If we could stick to real #s going forward then this thread would have some value.
First establishing some baselines with stock charger is essential. Also remember only some fuel gauges support actual current measuring and many apps attempt to calculate current by looking at voltage over time.
Sent from my Nexus 5 using xda app-developers app
kepapas said:
I use nexus 7 charger. Takes around 15 min to fully charge at 70 percent
Sent from my Nexus 5 using XDA Premium 4 mobile app
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Thanks...since I left my N5 charger in a hotel (!) I was having trouble finding a replacement 1.2a charger. So gave up that hunt and just got the Nexus 7 charger on Amazon.
sluflyer06 said:
Everyone is saying "its faster" but nobody has bothered to mention what faster is.
From 15%, I saw 100% charge in just 2 hours with Qi so I think these phones charge fast in general since Qi is only 1 am output.
If we could stick to real #s going forward then this thread would have some value.
First establishing some baselines with stock charger is essential. Also remember only some fuel gauges support actual current measuring and many apps attempt to calculate current by looking at voltage over time.
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
We don't need no stinkin' science in here!
A lot of people just assume their phone is charging faster because they're using a faster charger. Placebo at work.
Folks, if you want to properly determine whether a charger over 1.2 amps is worthwhile you need to do a proper test and remove all the variables:
1. Put the phone in airplane mode and shut down all apps and services. Best if you do this from a clean factory reset so the tests are on equal footing. Any apps using the phone will draw on the battery and influence the test negatively for that charger.
2. Up to 15 minute charging variances are normal. It's a chemical reaction inside of the battery, it's not going to be that consistent.
3. Make sure to charge from the exact same percentage level.
4. REPEAT THE TEST at least 3 times. If the test shows dramatic outliers, perform extra tests and make sure the test is consistent.
Does that sound like a lot of work? Yeah, but it's the only way you can actually make an assertion that one phone charger is faster than another.
Vincent Law said:
We don't need no stinkin' science in here!
A lot of people just assume their phone is charging faster because they're using a faster charger. Placebo at work.
Folks, if you want to properly determine whether a charger over 1.2 amps is worthwhile you need to do a proper test and remove all the variables:
1. Put the phone in airplane mode and shut down all apps and services. Best if you do this from a clean factory reset so the tests are on equal footing. Any apps using the phone will draw on the battery and influence the test negatively for that charger.
2. Up to 15 minute charging variances are normal. It's a chemical reaction inside of the battery, it's not going to be that consistent.
3. Make sure to charge from the exact same percentage level.
4. REPEAT THE TEST at least 3 times. If the test shows dramatic outliers, perform extra tests and make sure the test is consistent.
Does that sound like a lot of work? Yeah, but it's the only way you can actually make an assertion that one phone charger is faster than another.
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Click to collapse
No. This is exactly what I'm talking about. I charge my phone all the time. And the second I used this charger and consistently from then on the phones charges about 1/3 faster. I really don't care what is "supposed" to happen. It just works. I get my charger back on Friday and I will prove it. The battery usage shows a giant spike. Upwards compared to the more gradual spike with the stock charger. My Google edition HTC one used to barely charge while playing games with the stock charger and now it charges as fast as stock when I wasn't even using it.
rican408 said:
No. This is exactly what I'm talking about. I charge my phone all the time. And the second I used this charger and consistently from then on the phones charges about 1/3 faster. I really don't care what is "supposed" to happen. It just works. I get my charger back on Friday and I will prove it. The battery usage shows a giant spike. Upwards compared to the more gradual spike with the stock charger. My Google edition HTC one used to barely charge while playing games with the stock charger and now it charges as fast as stock when I wasn't even using it.
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The HTC One's stock charger was only 1 amp, not 1.2 amps. It was clearly capable of charging faster, this phone not so much.
Vincent Law said:
The HTC One's stock charger was only 1 amp, not 1.2 amps. It was clearly capable of charging faster, this phone not so much.
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I was actually using the 1.2a charger from my nexus 4 as the "stock" charger. For the same reason, I know more is better.
lg g2 charger works really well for me