Phone charges faster from external battery than AC - Verizon Samsung Galaxy S III

Just something I've been noticing, my phone charges must faster using an external battery than the wall AC adapter. Anyone have an idea why? Battery is 5V/1A, adapter is 5V/2A. Same occurs for other adapter that is 5V/1A output. I happen to be using a third party micro USB cable.

Skyrocketing said:
Just something I've been noticing, my phone charges must faster using an external battery than the wall AC adapter. Anyone have an idea why? Battery is 5V/1A, adapter is 5V/2A. Same occurs for other adapter that is 5V/1A output. I happen to be using a third party micro USB cable.
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Something is odd there. 2 amp should always beat 1 amp.

ThePagel said:
Something is odd there. 2 amp should always beat 1 amp.
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Well I do know that phones have a limit of how much power they can receive regardless of the output of the adapter. But that's not that I'm confused about. The external battery pack and the other adapter have the same output but the AC adapter charges much more slowly. For example, I was using my phone heavily last night as to where my phone battery was decreasing while plugged into the wall adapter. Once I switched to the external battery it started increasing my phone battery.
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EDIT: May have figured out the problem. At least testing with my Nexus 7 using the stock Nexus 7 AC adapter, I compared the charging speed using the stock Nexus 7 cable and my third party cable. In 15 minutes using the stock cable it charged about 10%. In 15 minutes using the third party, about 2-3%. I never knew that the cable could affect the charging speed.

Skyrocketing said:
Well I do know that phones have a limit of how much power they can receive regardless of the output of the adapter. But that's not that I'm confused about. The external battery pack and the other adapter have the same output but the AC adapter charges much more slowly. For example, I was using my phone heavily last night as to where my phone battery was decreasing while plugged into the wall adapter. Once I switched to the external battery it started increasing my phone battery.
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EDIT: May have figured out the problem. At least testing with my Nexus 7 using the stock Nexus 7 AC adapter, I compared the charging speed using the stock Nexus 7 cable and my third party cable. In 15 minutes using the stock cable it charged about 10%. In 15 minutes using the third party, about 2-3%. I never knew that the cable could affect the charging speed.
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A lot of times yes. My original charger works a lot better than any other one but I also utilize fast charge from lean kernel for example but it shouldn't make too much of a difference.
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Related

How do you charge your phone?

Hey guys,
Been wondering how everyone else charges their phones. I've always used my usb charger and only used the car charger when necessary.
Sent from my SCH-I510 using Tapatalk
Drain till 2 percent charge to 100 unplug turn off charge up to 100 turn on charge and repeat 2 times. Long story short I bump charge
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I do the battery calibration from the other thread about once a week. For everyday charging I just charge when low. So far my battery last pretty long.some days longer then others.
I usually just plug it in
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Just the usual. Plug it into the standard micro USB the phone came with. Calibrate every time I update my ROM(since Humble comes with a battery calibrate app, makes it very easy).
at home i use the USB charger that came with the Charge. at work i use a micro usb charger that came with a palm pixi or a bluetooth headset that used micro usb to charge. I tried using a microusb cable plugged into my work computer, but that triggers the usb storage mode, which stops my podcast player. I've also noticed some universal usb chargers trigger the USB storage mode.
In the car I have the Charge car dock. I use a mini usb charger for a garmin gps with a mini to micro usb adapter with it. If I plug that directly into the Charge, it triggers the Desktop dock mode, rather than car dock mode.
ace5198 said:
I usually just plug it in
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Bahaha. Here, I use my Galaxy Tab charger. Goes a lot faster because of the higher amperage, plus I don't need to charge my Tab very often.
Sent from my Droid Charge running Humble 1.4

Alternate micro USB wall chargers

After using a wall adapter to micro USB port charger that only supplies 0.7 A instead of the 1 A the stock charger does, the lower adapter got very hot. Does the phone still try to draw one amp if its not connected to a PC through usb? Considering the standardization of micro-usb it would seem like G2x owners will try to use chargers at friends houses for other phones and it may not be the safest thing. Any input?
My factory LG charger only provides 0.7 amps.. but I use my hd2 charger that provides 1 amp cause the phone charges a little faster on it.. so I don't understand what your actually trying to say?
Sent from my LG-P999 using XDA Premium App
k00zk0 said:
After using a wall adapter to micro USB port charger that only supplies 0.7 A instead of the 1 A the stock charger does, the lower adapter got very hot. Does the phone still try to draw one amp if its not connected to a PC through usb? Considering the standardization of micro-usb it would seem like G2x owners will try to use chargers at friends houses for other phones and it may not be the safest thing. Any input?
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Phone can only draw as much power as the charger supplies, up to something like 1 amp. If the charger supplies less than that, then it only draws what the charger supplies. If the charger supplies more than 1 amp, then it will still only draw the 1 amp that it needs. The more important thing to ensure is that the voltage of that charger is the same as the stock charger.
G2X CM7
squish099 said:
My factory LG charger only provides 0.7 amps.. but I use my hd2 charger that provides 1 amp cause the phone charges a little faster on it.. so I don't understand what your actually trying to say?
Sent from my LG-P999 using XDA Premium App
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It's strange we got different chargers. This one outputs 4.8V at 1.0A. It also squeals when the phone is in standby. If i wake it it stops humming. Model STA-U13WR2. I wonder if charge rate has to do with anything bad? When the charge says completed and it is plugged into a USB port, it will charge for another hour at times. Makes sense since a high charging rate will cause the battery voltage to spike and read as if the charge is complete when it's still got room.

Charging slow???

Out of the blue I noticed my S3 was charging very slowly, it even was losing a charge while it was plugged in while I was using it. I figure it had something to do with my custom ROM so I reflash, still same outcome. The battery was still holding a good charge, so I figured it was something else. I then went out and bought a new charger, which came with a micro usb cord to see if that helped. Plugged in the new charger while using my old micro usb cord, still same outcome. Then used the new micro usb cord and old charger, charging went back to normal, problem solved! I would of never thought that the cord would malfunction from day to day use after such a short lifespan. Moral of the story, check your cords if you experience the same problem, it could save you some time and money!
I bought some cheap ones off Amazon. They won't charge the s3 but will my touchpad. But my s3 charger won't charge my touchpad. Stuff is weird at times.
Glad it was an easy fix.
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Must have been charging in USB mode.
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I believe it, using my old galaxy nexus cord for my s3 charges extremely slow (like 200 mAh) for some reason. I switched to a different cord and now it's all good, I have no clue why but that's how it is.
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That's weird mine started doing the same thing just in the past few days. I have to unplug and plug it back in multiple times before it goes into AC mode
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I really think that those cheap cables don't charge nearly as fast. Especially the Stock Sammy ones. I use the thicker LG cables and they seem to charge so much fast and transfer files faster..
I just went through the same thing. The phone was charging for twelve hours and only gained 50 percent. Took forever to figure out it was the cord.
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USB Cable
I think charging AC is not fast charge.
You should to charge USB cable.
Thanks.
cell128 said:
That's weird mine started doing the same thing just in the past few days. I have to unplug and plug it back in multiple times before it goes into AC mode
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That's what my phone was doing, I'd unplug then plug it back in and would go from USB to AC, but it still charged slow. That cable, no matter what it said, would still charge slow as balls.
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I had heard of "Buy Cheap, Buy Twice", but now we've got "Buy Cheap, Charge Twice"
A lot of times it's the DC power brick that makes the difference. Not all of them have the same power output. Rarely, if ever, is it the actual cord itself. USB cables use pretty thin gauge wire already and the only way you're going to get a difference from one cable to another would be if it was REALLY cheap and using an ultra-thin wire or if it was a REALLY long cable (increases in cable length equate to increased resistance to electrical transmission...)
All USB cables are 5 volts. However, there can be significant differences in the milliamp output for each DC adapter. Aside from being a computer geek and gamer who builds custom PC's, I happen to be a hotel General Manager. I just checked our catch-all box of phone chargers and found that while every charger has an output of 5v, the amperage put out varied from 350 mA to 1000 mA from one charger to the next.
This variance in output is why some chargers take so long as compared to others. I don't know what the actual Samsung charger output is, since my charger is at home, but my guess is it's between 800 and 1000 mA.
I use the stock BB charger to charge both my 9900 and GS3, the BB charges pretty normal but lately I've been having a problem with the charging time on my S3, I have to charge it everyday now, my usage isn't that heavy, it lasts me a day and a half normally. Going to start using the stock charger to see if there is a difference.
I'm using the Samsung stock charger after not having used it for a month and noticing that my battery levels have deteriorated after using my BB stock charger. The battery seems to be discharging while on the charger! I'm in for a world of pain, going to monitor it for a while. I could be stressing over nothing.

[Q] Phone charging extremely slow...

Hello!
Recently, my phone has been charging very slowly. When I first got my phone, it went from zero to 100% in ~2.5 hours, but now it takes about 5 hours to fully charge. I am currently using the stock charger and USB cable that came with the phone, and I have tried other cables and chargers to ensure that it wasn't my charger's fault (or my USB cable). I also tried flashing the stock rom and kernel, but the problem was persistent. Could it be a defective battery that is causing this problem?
My current settings:
Mahdi Rom 4.4.3 6/12
Stock kernel settings (no UV, OC)
No partial wakelock problem
Thanks!
Install CurrentWidget: https://play.google.com/store/apps/details?id=com.manor.currentwidget
Take a look at the charging levels.. While charging via a wall charger it should be between 800-1050 mA.. If it's below that, it's most probably a low standard usb cable or a charger.. Try changing the cable first and check the current.
I'm getting around 600mA so that's not good.. I'll try another charger and see what goes. Thanks!
Sent from my Nexus 5 using Tapatalk 2
vin4yak said:
Install CurrentWidget: https://play.google.com/store/apps/details?id=com.manor.currentwidget
Take a look at the charging levels.. While charging via a wall charger it should be between 800-1050 mA.. If it's below that, it's most probably a low standard usb cable or a charger.. Try changing the cable first and check the current.
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FYI, I am currently using the stock charger and cable that came with the phone and still getting low mA. I just tried different cables and chargers and the result comes out the same. What else can I do?
Sent from my Nexus 5 using Tapatalk 2
amgpower63 said:
FYI, I am currently using the stock charger and cable that came with the phone and still getting low mA. I just tried different cables and chargers and the result comes out the same. What else can I do?
Sent from my Nexus 5 using Tapatalk 2
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Aah.. That's not good. In the OP I see that you have already tried going back to stock and checking the results?
May be you could try a different wall socket in your home? You could also try charging via a computer and see whether it's getting charged properly? (Fast charge needs to be enabled for this)
amgpower63 said:
FYI, I am currently using the stock charger and cable that came with the phone and still getting low mA. I just tried different cables and chargers and the result comes out the same. What else can I do?
Sent from my Nexus 5 using Tapatalk 2
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i charge slow on the stock charger/cable as well. i ended up buying a 5amp charger with two usb holes and a better usb cable, now i charge from 0 to 100 in about an hour and a half.
Thanks for your help, guys! Turns out most of the cables I own are faulty/below standard. I found a cable later that charged my phone at around 800mA. I guess I'll do some cable shopping later
simms22 said:
i charge slow on the stock charger/cable as well. i ended up buying a 5amp charger with two usb holes and a better usb cable, now i charge from 0 to 100 in about an hour and a half.
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Could it be something to do with custom ROM settings? Stock charger and cable should be able to pull 800-1000mA from a power outlet, I can't understand why some devices wouldn't be able to do so.
bblzd said:
Could it be something to do with custom ROM settings? Stock charger and cable should be able to pull 800-1000mA from a power outlet, I can't understand why some devices wouldn't be able to do so.
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No. The only thing that would influence charge speeds is USB fast charge (charges faster on USB, AC still the same) and that's a kernel level feature.
Sent from my Nexus 5
Lethargy said:
No. The only thing that would influence charge speeds is USB fast charge (charges faster on USB, AC still the same) and that's a kernel level feature.
Sent from my Nexus 5
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Something that was overlooked was temperature. IIRC at higher temperatures the phone either stops charging or slows down charging in order to keep the heat down. This was done to preserve the life of the battery as charging batteries while they're hot could degrade the battery.
bblzd said:
Could it be something to do with custom ROM settings? Stock charger and cable should be able to pull 800-1000mA from a power outlet, I can't understand why some devices wouldn't be able to do so.
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no. ive found in the past(with the n4), the default cable/charger also went bad quick, ended up using a nexus 7 charger/cable on it.

Anyone tried using their samsung 2.0 amp charger?

Plugged my phone into a 2.0 charger from either b my s4 mini or my n3 before going to bed, woke up and phone wasnt fully charged. Didn't think anything of it, just went on my way. Now my phone just died completely went to use that same charger and didn't charge.
Downloaded a galaxy battery current charging app and it shows negative amperage when plugged into 2a charger. Also with the screen off it only shows one green dot instead of the trail leading to the battery.
Sounds like your 2 amp cable was defective. I've plugged mine into a 2 amp and it just takes a lot longer to charge
I thought so too, so I used the brand new cable that came with the n5, same result.
If the other cable was defective it could of damaged your usb port possibly. I use a 2 amp in my car sometimes then my 5 amp at home no ill effects
I use my note 3 charger every night because ive always heard a slower charge is better for battery longevity. I have had absolutely no problems and wake up with a full charge after a average 5 hour sleep every morning. I only use my note 5 charger for quick fill ups during the day. Im guessing your wall wart is bad. Try the 2amp cable on the note 5 charger then U will know its not the cable
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Same, no problems with the 2 amp here.
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