Database Users

[Q] USB charging current???

I think there is a serious problem with my charging circuit on this phone. I have no idea if its hardware or software that is controlling the charging circuit but I can tell you that it literally takes forever to charge my phone via USB and this is unacceptable from a consumer standpoint.
I wanted to see how much current the phone was asking for and I was really surprised to see 96mA!!!
No wonder its charging so slow, something is really wrong here, and It doesnt look like a faulty battery. The phone should be asking for 10x this much current.
Can some people post how much current their phones are drawing from the usb port?
If you dont know how to do this, in "device manager" double click on the appropriate "usb root hub" that your phone is connected to and click on the "power" tab. Post results.

You are trying to charge your device on a pc correct?
Sent from my HTC Vision using XDA App

500mah is the max just about any phone will charge at from a usb port, at least without any modifications like fast charge drivers.

USB current, for charging purposes, is and always will be low. Otherwise you would burn up your motherboard. Alternatively it would let the magic smoke out of your phone and it would quit working properly.
Sent from Bonsai 6

+1 to the two posts above me. I suggest getting a wall adapter for your usb and charging it there, you will get vastly superior charging times
Sent from my HTC Vision using XDA App

Top Nurse said:
USB current, for charging purposes, is and always will be low. Otherwise you would burn up your motherboard. Alternatively it would let the magic smoke out of your phone and it would quit working properly.
Sent from Bonsai 6
Click to expand...
Click to collapse
USB current, for charging purposes, should be and always be 500mA. 96mA is not enough to charge one of these phones. You cannot burn up your mother board if the device calls for more than 500mA, as that is all that is available for each usb port.
Ive connected three of my old phones and an EVO and a mytouch Slide, they all ask for the maximum allowed current as they should. I do have a wall charger and it charges fine, Im trying to see if everyone else has the same USB charging problem as me, or if I have a broken phone, or if I just have some bad software on my phone.
Please if anyone can post results it will be helpful.

Hello again,
My G2 is asking for 500ma
Sent from my overclocked G2

PaganAng3l said:
Hello again,
My G2 is asking for 500ma
Sent from my overclocked G2
Click to expand...
Click to collapse
thanks but can you please post results for the an EPIC 4G phone?

Connected to a PC USB port, the Epic 4G will only draw 380ma. Via a wall charger is will only draw 600ma. Hence why charging on a PC is slower. Simple as that.

I also show exactly 96 mA, regardless of which USB port I am plugged into. Practically new motherboard, so I know the USB current isn't an issue. New Blackberry USB cable (far superior to stock Samsung cables).

IIRC, 500ma is the max draw per hub, not USB port. This is why people get powered add on hubs so they can have components that take more draw than a computer USB port will give.
Sent from Bonsai 6

Top Nurse said:
IIRC, 500ma is the max draw per hub, not USB port. This is why people get powered add on hubs so they can have components that take more draw than a computer USB port will give.
Sent from Bonsai 6
Click to expand...
Click to collapse
500Ma is NOT the per 'hub' power supplied, 500Ma is the PER PORT current max. EACH port on the motherboard will supply up to 500Ma, trying to draw more will not work. It won't burn it out, it just won't supply any more than that. If you have 8 ports on your MOBO, you will get a total of 4A of current in total, not exceeding 500Ma per port. If you hookup an UNPOWERED hub to your mobo, the total draw still cannot exceed the 500Ma. If the hub is powered, it will provide 500Ma to each port on it, and draw virtually none from the MOBO.
This is why you see some external devices with dual USB cords, or a single with a Y. This is because it will combine the 500Ma from each port to power the device for up to 1A of current.
96Ma will not charge the phone, it's not even enough to power the phone while making a call.
How are you measuring your current draw? Try other USB devices. Wall charging takes between 2 and 3hrs to charge depending if the phone is on and its current draw for what it's doing.

Top Nurse said:
USB current, for charging purposes, is and always will be low. Otherwise you would burn up your motherboard. Alternatively it would let the magic smoke out of your phone and it would quit working properly.
Sent from Bonsai 6
Click to expand...
Click to collapse
Pretty much every USB host device I've used can easily deliver 1A. Most new machines can deliver 2A (such as ASUS boards and Macs) over USB. The Epic still charges way too slowly even off a wall charger. It'd be nice if it drew 1A instead of ~600mA. Most other devices use much higher charge currents when plugged into AC.
As for the Epic's charge current, I think the USB driver on it just reports charge current incorrectly.

Orbiting234 said:
Connected to a PC USB port, the Epic 4G will only draw 380ma. Via a wall charger is will only draw 600ma. Hence why charging on a PC is slower. Simple as that.
Click to expand...
Click to collapse
thanks to the two people, that haven't been derailing this thread into a "how usb ports work discussion".
if anyone wants to help instead of arguing over how usb ports work, it would be really helpful to know what rom and kernel you are using when you tested your epic 4g device.
Im especially interested to know this information about orbiting who is getting 380mA. Im also interested in how you measured measured the 600mA from the wall charger.
Its posted at the end of the OP how to see how much current your phone is asking for.

I think the charge controler on the Epic will alter the current draw depending on how close it is to fully charged . Once it gets above about 90% charge the current should taper off. this is to prolong the battery life.
The Normal charging times starting at about 30% is under 3 hours on a wall charger for me. I can go from about 70% to 100% om my laptop in about an hour.

poit said:
I think the charge controler on the Epic will alter the current draw depending on how close it is to fully charged . Once it gets above about 90% charge the current should taper off. this is to prolong the battery life.
The Normal charging times starting at about 30% is under 3 hours on a wall charger for me. I can go from about 70% to 100% om my laptop in about an hour.
Click to expand...
Click to collapse
I already know this, and its not what I asked for.

poit said:
I think the charge controler on the Epic will alter the current draw depending on how close it is to fully charged . Once it gets above about 90% charge the current should taper off. this is to prolong the battery life.
The Normal charging times starting at about 30% is under 3 hours on a wall charger for me. I can go from about 70% to 100% om my laptop in about an hour.
Click to expand...
Click to collapse
mrhocuspocus said:
I already know this, and its not what I asked for.
Click to expand...
Click to collapse
I appologize for wasting your time, but let me elaborate.
Right now my phone is at 89% charge, and right now the "Power Required" field in the USB root properties is showing 96 ma. I doubt that is an actual measured current, more likely it's what the port controller on the Epic reports as a minimum current required. What I can tell you is that even with that info, my phone charges fine. Seems unlikely that it's only supplying 96ma because I'd expect the phone must draw 40 ma or so just to idle.
What would be more useful would be an app on the phone that polled the charge controller to give us actual voltage and current data. I had one on my old TP2 that was great, but I don't know about one for Android.
Edit: in the time it took to type this reply the State of Charge went from 89 to 92%, yet the properties still shows 96 ma. I think the controller is getting way more than 96ma, so that number is likely bogus.
I guess that wasn't what you asked for either, but maybe it is stilll useful

poit said:
the USB root properties is showing 96 ma. I doubt that is an actual measured current, more likely it's what the port controller on the Epic reports as a minimum current required.
I guess that wasn't what you asked for either, but maybe it is stilll useful
Click to expand...
Click to collapse
no need to apologize, I could explain to you why what you think is "more likely" is actually less likely. but it would only further derail this thread. feel free to pm me if you are interested.
all im interested in is three things:
current asked for by phone from pc usb, rom version, and kernel version.
someone already reported 380mA. but i have no idea what software he is on.

I'm running completely stock EB13. On my newer laptop with Windows 7 it shows 96mA in the device manager. On my ancient Dell PC at work running XP, it shows 96mA as well. In both cases I'm plugging the phone directly into a USB port, no external hubs.

xxmastermindxx said:
I also show exactly 96 mA, regardless of which USB port I am plugged into. Practically new motherboard, so I know the USB current isn't an issue. New Blackberry USB cable (far superior to stock Samsung cables).
Click to expand...
Click to collapse
I'm running the latest Syndicate 1.0.1 with their latest 1.0.3 kernel. My quote above is when I was running Syndicate 1.0.0 and kernel 1.0.1.
If I go back to stock for some reason, I'll post those numbers up too.
Sent from my SPH-D700 using XDA Premium App

battery drain with car usb and gps

Hi
Using today the phone @ 100% brightness with car charger connected and using Sygic / Copilot, I see that my device can't not even charge at the same time that I am using it, but maintain their % of battery. Even with the charger the phone drains battery.
WTF samsung, So i cant make a long travel without running out of battery?
Anyone more with this problem?
PS: My HD2, HD, TyTN2, etc doesn't have this problem with the same car charger, they even charge at the same time.

What's the rating on your charger? I had to swap mine out for a 1A one in order to cope with GPS use in the car. Haven't had a problem since then.
I suspect the one you're using is 750mA or even potentially 500.

I have just had the same problem. I knew i needed a higher amp charger but i thought i would give it a try. The one i used is 650mA, so that's definitely not large enough. The normal 'house' charger is 0.7A (700mA) so in theory that size or above should charge whilst the S2 is being used.

I have a 1200 mA usb adapter for car (a sony ericsson, very very slim one) and I have no issues. You need a decent amount of power for that phone so 650mA will not do, have at least 1000.
http://www.nextag.com/Sony-Ericsson-AN400-Compact-853915153/specs-html
Not sure if this is the exact model but I found it to be the best because it's slim and there is nothing sticking out of the car socket, has a lot of power and I can power any usb device with it.

padlad said:
I have just had the same problem. I knew i needed a higher amp charger but i thought i would give it a try. The one i used is 650mA, so that's definitely not large enough. The normal 'house' charger is 0.7A (700mA) so in theory that size or above should charge whilst the S2 is being used.
Click to expand...
Click to collapse
Yest but probably you hava a chinese charger. The rating on it is never near the real one.

oh, I see, crappy charger, ill change then thanks guys

TomTom recently released a high speed multi charger. I replaced my old car charger with this one as I had a similar slow charge problem. Never had a problem ever since. All my weapons are always fully loaded with enough power! Expensive though!
http://www.tomtom.com/en_gb/product...-cables/high-speed-multi-charger-9UUC.001.04/

If someone is using a cheap higher-powered mains adaptor without issue, could you please post a (UK) link? Also if anyone knows of a cheaper alternative to the £20 car charger that would be great too!

I had same problem.I bought Samsung charger and no problem after
Sent from my GT-I9100 using XDA App

2.1 Amp TomTom charger is way too much for this device. Samsung wall charger is only rated at 750mA, but someone even found out that in source level Samsung has limited the power current at only 650mA.
With 1 Amp (1000mA) top quality car charger, the phone lost charge while using Navigation on full brightness.
Very slow charging in general for this phone.

shawt said:
I had same problem.I bought Samsung charger and no problem after
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
Same here

Mittaa said:
Same here
Click to expand...
Click to collapse
Can you provide a link? I'd like to get one

I bought mine on eBay for £6.Just search "genuine samsung car charger"
Sent from my GT-I9100 using XDA App

I bought today a Belking car charger of 2.1amps and suprise!, same problem battery drain.
Can be maybe the car? I doubt it, any idea?
http://www.belkin.com/IWCatProductPage.process?Product_Id=525940

When you have the car charger plugged into the phone go into Settings/About phone/Status & look at "Battery status"; it should tell you if the phone thinks it's plugged into a USB port (in which case the phone will draw only 450 mA) or an AC charger (from which the phone will draw 650 mA). These limits are built into the Samsung ROM, presumably to keep the phone cool and/or extend the battery's lifespan. They could be overridden (especially the AC charger current limit) in a custom ROM.
Absent a custom ROM, if the Status display says you're connected to a USB port, you could try a different charger, or connecting USB pins 2 & 3 (the two center pins on the USB A connector) together. That's how the phone decides if it's connected to a USB port or AC charger -- the low-resistance (less than 200 ohm) connection between the two USB data pins is the key. The spec calls for 200 ohms resistance between the data pins, but some of the low-end high current chargers I've seen just have a direct short.
If that doesn't work, or if the Status display says you're charging off AC, then try some of the other battery-life tricks documented here in the forums; they should reduce the device's draw from the battery, allowing the charger to do its job.

Wow, this is kind of disappointing i have to say. I have noticed the USB charging is incredibly slow. You can't ever rely on it, i think it would take close to 5 hrs to fully charge from USB, that's insane! By mains it's somewhere between 2 and 3, but that's still way too high.
I take it if you buy a higher-powered mains adaptor (not one for the car) then we'd definitely get the benefits of a faster charge? Can someone post a link to one they are using and know works faster that the stock one?
Cheers

I ll try ur tricks guyz.
for the time being this is my situation (and it sux):
-car charger 1A 5v
-slow chargin and hot device
-using navigator equals : phone burns, drains battery and in the worst scenario freezes
yesterday I received a call while phone plugged into car charger with navigator session. wot happened is phone freezed (screen didnt switch off) and I saw PROXIMITY SENSOR WAS RED!

shawt said:
I had same problem.I bought Samsung charger and no problem after
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
The first post got me worried for a while, but this info has put me back to ease. Pre-ordered the GS2 (India) and getting the original Samsung charger along as a freebie.

Yeah, i have simelar experience with the samsung s2 in my car.
Its eating the battery even when its plugged in and i think i have a good charger..
I found 1 solution.. I use now copilot, you can set different setting to disable the screen automatically when you drive a straigt forward for some kilometres, only when you need to turn it comes up again.
thats how i set it and it loads a little, but bad anyway.
Maybe thats what the + means in Super Amoled + (+batteryusage)

(•.•) said:
Maybe thats what the + means in Super Amoled + (+batteryusage)
Click to expand...
Click to collapse
nexus S didnt have such a problems. it's only around how samsung managed chipset.
I ll try to set cpu downclock while temperature goes over 40..

Slow charging speed via USB

How are those who've got their N10 finding the charging speed? Mine arrived yesterday and has been charging very slowly, as the reviews had said.
In six hours last night on charge whilst left on standby, it charged about 20%. Is everybody else finding a similar situation?
I'm looking forwards to the pogo-pin chargers/docks being released, which will hopefully charge a bit faster! If anybody knows how to hack something together to make use of the faster charging speed on the pogo connection then please do share! :good:

Of course, you have to look at the amperage and watt of your power supply. Even among the AC powered chargers, they vary greatly, and here you are talking about charging this behemoth with a measly powered USB.
Sent from my SGH-T889 using Tapatalk 2

If it takes 6 hours to charge 20% on a 2amp charger than that is seriously messed up.

BamAlmighty said:
If it takes 6 hours to charge 20% on a 2amp charger than that is seriously messed up.
Click to expand...
Click to collapse
Not messed up, just physics. There's an awful lot of resistance in a 9000MaH battery, and a standard microUSB (or even full-sized USB) connector can't handle the amperage that a faster charge would require. Which is why most big tablets had proprietary connectors up to this point.
But guess what? Google and Samsung knew this, it's why the N10 has one too, we just don't have the cable for it yet.
Pogo charger is coming, supposed to be at least twice as fast. Don't know why it was delayed, but most likely either a certification issue, or worry about Apple suing for it being too much like a Mag Safe connector.

http://forums.androidcentral.com/google-nexus-10-tablet-forum/225484-pogo-charger.html
Some guy posted the Pogo charger here. I wonder where he got it.

Buy a powered USB unit and plug into that, mine puts out around 5 amps

realyweely said:
Buy a powered USB unit and plug into that, mine puts out around 5 amps
Click to expand...
Click to collapse
Are the slow speeds people are getting from the wall charger our from a pc connection?
Are you saying a powered USB hub is charging it quicker than the mains charger supplied?
Thank you
Swype'd at pace from my Galaxy S2

I don't even charge phones via normal USB on PC anymore, let alone a tab. I've found the charging time on the N10 to be ok, provided the screen is off and also if I'm downloading something it seems to slow the charging down. Other than that it's not lightning fast, sure, but I'm ok with it. And so much the better when they release the pogo charger.

charged mine over night yesterday from 10% to full wall mains, but when the screen is one it doesn't seem to charge just maintains current charge which is a bit annoying

Dja357 said:
How are those who've got their N10 finding the charging speed? Mine arrived yesterday and has been charging very slowly, as the reviews had said.
In six hours last night on charge whilst left on standby, it charged about 20%. Is everybody else finding a similar situation?
I'm looking forwards to the pogo-pin chargers/docks being released, which will hopefully charge a bit faster! If anybody knows how to hack something together to make use of the faster charging speed on the pogo connection then please do share! :good:
Click to expand...
Click to collapse
Try turning anything that uses power off (i.e)...turn the screen brightness the lowest it will go, turn the tablet on airplane mode. Turn the sounds off.
I find that helps my phone charge faster, maybe this will help with the tablet.

Are you talking about charging via USB on a PC, or via the PSU?
Through the PC will be very slow at a maximum of 500mA, but the PSU should be able to power it? My N7 and Galaxy Tab 10.1 had 2A chargers - what does the N10 come with?

I am regretring more and more buying this. I haven't received mine yet but the amount of pixels is kind of ridiculous. I would have been happy with 1920x1200 with that beasyly hardware. Saw a review that said their battery only lasted 4 hours because of the insane power the screen sucks away.
Also the fact that this pogo charger will probably cost $50+ and it is something that should have been standard either way.
Oh Asus infinity..why must your I/O be so god awful. You were almost the perfect tablet
Sent from my SCH-I535 using xda app-developers app

Yeah charging is slow, though not as bad as 20% in 6 hours! I think mine was charging faster than that even when I was using it. I think trade off is worth it though with the microUSB connector.

The iPad 3/4 is no better... Takes forever to charge

duarian said:
I am regretring more and more buying this. I haven't received mine yet but the amount of pixels is kind of ridiculous. I would have been happy with 1920x1200 with that beasyly hardware. Saw a review that said their battery only lasted 4 hours because of the insane power the screen sucks away.
Also the fact that this pogo charger will probably cost $50+ and it is something that should have been standard either way.
Oh Asus infinity..why must your I/O be so god awful. You were almost the perfect tablet
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
It's just a cable, the charger is already capable of 2a.

cspiby said:
It's just a cable, the charger is already capable of 2a.
Click to expand...
Click to collapse
Well if the cable is only $5-$10 then that's great, however I foresee them milking that cable for all its worth . I'll see when I get mine today how I feel
Sent from my SCH-I535 using xda app-developers app

Lumsdoni said:
Are the slow speeds people are getting from the wall charger our from a pc connection?
Are you saying a powered USB hub is charging it quicker than the mains charger supplied?
Thank you
Swype'd at pace from my Galaxy S2
Click to expand...
Click to collapse
No but it will charge at the same speed as a Mains charger and thats better than plugging into your laptop or PC

realyweely said:
No but it will charge at the same speed as a Mains charger and thats better than plugging into your laptop or PC
Click to expand...
Click to collapse
I got about 40 % in 2 hours off mains
Swype'd at pace from my Galaxy S2

It's nice to know that we have the Pogo pins option for faster charging. It makes me feel better now going through with my decision to get N10. I am a heavy media/game consumption guy so this device is perfect for my needs.
Sent from my GT-N8013 using Tapatalk 2

I must say I would hate to spend an extra $55 (assumed price) for a pogo charger for a tablet I've already spent $550 (tax+ship)

Nexus 4 - Xbox 360 charging problem

Hi guys,
currently having a problem with my xbox 360 charging my Nexus 4...
basically i put my nexus on charge (usb cable from xbox 360) over night and it clearly said its charging, so i woke up the next morning and the battery % was as i left it, but it still clearly says charging? this has happen to me twice this week... has anyone else had a problem like this?

forgot to mention, i have always charged my mobile devices using the xbox 360 and never had any problems before...

Maybe try other cables?
I have had similar issues with phones in the past where certain cables worked and some didn't.

accidently gave u a thx I had this problem with all my phones trying to charge them with my PS3 or PC. With my PS it charged 1-2% and with my PC a bit slower than normally. I think its the bad electricity supply over usb

jmcsk8 said:
Maybe try other cables?
I have had similar issues with phones in the past where certain cables worked and some didn't.
Click to expand...
Click to collapse
i'm currently charging right now on work laptop with same cable and its charging fine?

bustem said:
accidently gave u a thx I had this problem with all my phones trying to charge them with my PS3 or PC. With my PS it charged 1-2% and with my PC a bit slower than normally. I think its the bad electricity supply over usb
Click to expand...
Click to collapse
true, it could be... but i charge my samsung galaxy s2 using same method and that charges up fine without problems...

I have no problems with my 360'
But why would you keep your Xbox running at night to charge your iPhone??
Better use a wall charger. It charges faster, and is cheaper..
Sent from my GT-I9300 using xda app-developers app

Davanzze said:
I have no problems with my 360'
But why would you keep your Xbox running at night to charge your iPhone??
Better use a wall charger. It charges faster, and is cheaper..
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
weirdly i dont leave the xbox on... the usb ports are still live when it is switched off and because of that reason, i use it to charge my phone.
PS its a Nexus not an iPhone lol

killa_byte said:
weirdly i dont leave the xbox on... the usb ports are still live when it is switched off and because of that reason, i use it to charge my phone.
PS its a Nexus not an iPhone lol
Click to expand...
Click to collapse
kk, haha i know its not an iPhone, but my swype made phone into iphone

killa_byte said:
Hi guys,
currently having a problem with my xbox 360 charging my Nexus 4...
basically i put my nexus on charge (usb cable from xbox 360) over night and it clearly said its charging, so i woke up the next morning and the battery % was as i left it, but it still clearly says charging? this has happen to me twice this week... has anyone else had a problem like this?
Click to expand...
Click to collapse
I had similar issues while charging through my laptop, My phone would say charging, meanwhile it would be discharging
I think it has to do with the phone using more power than the port is giving out. Basically some apps you have one your phone is using so much battery that the charger is not charging because the required power to run the phone is greater than the charge is giving. I'm thinking this is becasue the phone has so much RAM that all the background apps are using more and more power. It's like charging a Laptop through your Xbox USB port, the laptop uses WAY too much power for it to be getting charged through a measly USB port.
Nonetheless, I stopped charging my phone through my laptop and just plugged it in the wall. It charges way faster anyway (my charging usually takes 2 hours when it's really low to full battery)

Even if it does charge, it's not likely to charge well; the Nexus 4's charger is 1.2 amps. The Xbox USB ports likely put out less than half that. Unless you have an S model, in which case the rear "Kinect" port is "high-powered," which likely means 1.0 amps.

I'm charging off my AirPort Extreme without issue...albeit it slow. Since I charge at night, it's a non-issue. OP, have you tried swapping USB cable?

Does the Xbox 360 temporarily disable its USB port if you try to pull to much power from them?
The Nexus 4 requires more than what is supplied...

uberSlackr could be right, normal usb ports are 5volts,500mah, so 5 volts standby, you should be able to charge even at a slow rate, windows 7 has an option to turn off usb ports to save power unless you disable it.maybe xbox has a similar power saving function.
samsung s2 max charging rate is at 650mah, my nexus charger is 1.2amps, so 1 amp draws too much.

tibere86 said:
I'm charging off my AirPort Extreme without issue...albeit it slow. Since I charge at night, it's a non-issue. OP, have you tried swapping USB cable?
Click to expand...
Click to collapse
yes, i've tried changing the cable and its the same... i believe the comments above have explained it much clearly to me and make me understand why its not charging (xbox usb being 500 mah and the phone needs 1.2 amp... so looks like i will have to use my wall charger from now on)
i appreciate the help guys!! :good:

Galaxy S2 + iPhone charger = Nuclear rocket charger

I don't know what drug Apple put in their chargers, but i've always noticed my iPhone charging waaaay faster than my S2.
I even tried draining them both to 0%, and charging them with their original chargers. As soon as the iPhone was full of juice, the S2 was just about 50 or 60%
So i did some research about the safety of using the Apple charger, and it appeared to be all OK.
I'm going to end up buying a new battery anyways because i feel like mine has worn out, so i thought it was a good idea to plug the S2 in the fruitplug.
After i plugged the USB cable into the Apple charger, i immediately noticed the phone charging way faster. Waaay faster.
The phone does get a little warmer, but not too warm. I charged the phone from 8% to 100% in less than a hour!
I'm still experimenting the safety of this, by constantly keeping a look at the temperatures, and how hot the thing feels, and it appears to stay safe.
I recommend to remove your case and battery cover and keep an eye on your phone if you consider trying this, but for now i can say one thing:
If you have an iDevice in your house, charge your phone with the fruitplug
on the other side... what do you think about it? Would you try it?

domini99 said:
I don't know what drug Apple put in their chargers, but i've always noticed my iPhone charging waaaay faster than my S2.
I even tried draining them both to 0%, and charging them with their original chargers. As soon as the iPhone was full of juice, the S2 was just about 50 or 60%
So i did some research about the safety of using the Apple charger, and it appeared to be all OK.
I'm going to end up buying a new battery anyways because i feel like mine has worn out, so i thought it was a good idea to plug the S2 in the fruitplug.
After i plugged the USB cable into the Apple charger, i immediately noticed the phone charging way faster. Waaay faster.
The phone does get a little warmer, but not too warm. I charged the phone from 8% to 100% in less than a hour!
I'm still experimenting the safety of this, by constantly keeping a look at the temperatures, and how hot the thing feels, and it appears to stay safe.
I recommend to remove your case and battery cover and keep an eye on your phone if you consider trying this, but for now i can say one thing:
If you have an iDevice in your house, charge your phone with the fruitplug
on the other side... what do you think about it? Would you try it?
Click to expand...
Click to collapse
It is all abouy amp your charger uses.
S2 charger give 5amp out and iphone must be more which throws more juice to ur phones battery thus fast charging.
Sent from my GT-I9100 using xda premium

Not 5A actually, it gives output of 5V and 1A.At least my charger. @domini99, what is the output for your iPhone charger ?

Nightshadow931 said:
Not 5A actually, it gives output of 5V and 1A.At least my charger. @domini99, what is the output for your iPhone charger ?
Click to expand...
Click to collapse
According to the information on the charger, it outputs 1A. My samsung charger also outputs 1A, yet it charges faster with the iPhone charger.
I did some quick research and found that the iPhone charger would have a special sort of **** inside of it that charges the phone in a different way. Not sure if bull**** or actually true, but they did put some sort of magic or drug in that thing to make it hypercharge anything i charge in it

They couldn't have put anything inside, it all depends of voltage and amperage.
You can use charger with higher amperage than your device need though.
And, yea, you can use charger with more amps, but you cannot use charger with higher voltage than 5V.

iPad charger gives [email protected], but last time I tried it with a Samsung phone, it wouldn't charge.

Nightshadow931 said:
They couldn't have put anything inside, it all depends of voltage and amperage.
The higher the amperage, the faster your phone will charge.
You can use charger with higher amperage than your device need, your phone would charge just fine, only faster. But it would cause heating your device, thus reducing the life of your battery.
And, yea, you can use charger with more amps, but you cannot use charger with higher voltage than 5V.
Click to expand...
Click to collapse
Well I'm fine with my iPhone charger
darth_mickrig said:
iPad charger gives [email protected], but last time I tried it with a Samsung phone, it wouldn't charge.
Click to expand...
Click to collapse
Maybe the iPad charger has too much drugs or magic inside of it and your Galaxy doesn't have any Space for it?

tablet/smartphone 5V | 2A,Micro USB
I buy charger for tablet/smartphone [email protected] It charges 3x faster.

I check all the chargers i have with current widget, a nice little app tell how much mv your battery have left and how much your charger putting in. I plug in a 600mah charger and i get around 500-550mah input. With a 2a charger i get 641mah consistantly, so i guess that's thr limit of our device
So 650mah, and a 1650mah battery, that means 2 and a half hour for full cycle. And that also means something is happening to that apple juicer

pipyakas said:
So 650mah, and a 1650mah battery, that means 2 and a half hour for full cycle. And that also means something is happening to that apple juicer
Click to expand...
Click to collapse
This.
S2's hardware doesn't allow it to charge more than 650mAh from an external charger. So it doesn't matter if you're using 1Ah or 2Ah charger, it will be the same.
Now, that's for the international i9100, who knows if there's something different with other versions or if the phone has a faulty hardware. I've also noticed that my phone recharges much faster right after being quickly discharged. So it could also be that the metering is faulty and there was juice left in the battery.

Darius_bd said:
This.
S2's hardware doesn't allow it to charge more than 650mAh from an external charger. So it doesn't matter if you're using 1Ah or 2Ah charger, it will be the same.
Now, that's for the international i9100, who knows if there's something different with other versions or if the phone has a faulty hardware. I've also noticed that my phone recharges much faster right after being quickly discharged. So it could also be that the metering is faulty and there was juice left in the battery.
Click to expand...
Click to collapse
I got European s2, would that make any difference?

What I know is that the s2 never will charge over 650mA per hour. I use a 700mA charger and incoming at ~640mA on my s2.
Maybe a battery charger will do better than charging through phone?

pipyakas said:
I check all the chargers i have with current widget, a nice little app tell how much mv your battery have left and how much your charger putting in. I plug in a 600mah charger and i get around 500-550mah input. With a 2a charger i get 641mah consistantly, so i guess that's thr limit of our device
So 650mah, and a 1650mah battery, that means 2 and a half hour for full cycle. And that also means something is happening to that apple juicer
Click to expand...
Click to collapse
How did u make it work ? For me it shows 0mA always. I tried with v0.38 though, could you send me an apk for the latest version (0.40) from play store, cause it keeps telling me that the app is not compatible with my device.
Also, are u on jb or kk ?

Nightshadow931 said:
How did u make it work ? For me it shows 0mA always. I tried with v0.38 though, could you send me an apk for the latest version (0.40) from play store, cause it keeps telling me that the app is not compatible with my device.
Also, are u on jb or kk ?
Click to expand...
Click to collapse
I install it from gg play and it works, no trouble there. Im using cm10.1, and i have tp resize the widget to have full vision of it. Anw, just got a ipad mini charger, 1A, plug in and it show around 640mah. 2.5h for a full cycle, that means op's charger have some problem. Too good to br true
---------- Post added at 02:21 PM ---------- Previous post was at 02:18 PM ----------
GreekBlood said:
What I know is that the s2 never will charge over 650mA per hour. I use a 700mA charger and incoming at ~640mA on my s2.
Maybe a battery charger will do better than charging through phone?
Click to expand...
Click to collapse
A charging dock for the battery only, maybe. But be careful of those, they can make battery "fat" then eventually broke
---------- Post added at 02:22 PM ---------- Previous post was at 02:21 PM ----------
Darius_bd said:
Now, that's for the international i9100, who knows if there's something different with other versions or if the phone has a faulty hardware. I've also noticed that my phone recharges much faster right after being quickly discharged. So it could also be that the metering is faulty and there was juice left in the battery.
Click to expand...
Click to collapse
Im using M250S version, and it doesnt seem that there are any differences

pipyakas said:
A charging dock for the battery only, maybe. But be careful of those, they can make battery "fat" then eventually broke=
Click to expand...
Click to collapse
Then you overcharge them.

GreekBlood said:
Then you overcharge them.
Click to expand...
Click to collapse
I dont have a proper charging dock though, i can only guess when it's finish, and that's dangerous. Im using an ipad mini charger now and it's fine, just can do the 1hour-to-full like op's

pipyakas said:
I dont have a proper charging dock though, i can only guess when it's finish, and that's dangerous. Im using an ipad mini charger now and it's fine, just can do the 1hour-to-full like op's
Click to expand...
Click to collapse
And that's awesome