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Whenever I plug my Desire in an AC outlet, it charges ridiculously slow. I check the battery status and it says "Charging (USB)" (not AC) and USB Debugging pops up. My wall adapter says it has an output of 1000ma. Is the chord bottle-necking the charging speed or is it the adapter? I am using the chord that came with my phone but I bought a new adapter to fit my countries outlets.
Same problem. I would like a resolution to this also.
There is allready a thread concerning this issue and it has the solution your looking for.
mercianary said:
There is allready a thread concerning this issue and it has the solution your looking for.
Click to expand...
Click to collapse
I have looked on the forums and it should seem like I should get regular AC charging on my Desire. I have a 1000mah charger and I am using the USB cable that came with my phone. I am wondering why I do not. I looked at my USB (fat side) pins and they are shortened. I have included an image of my charger.
if the adaptor says it supports iPhone etc then that is why the USB debugging symbol is coming up.
because that symbol is up it will only charge at 500mA max (the phone thinks it is in a PC, it doesn't wnat toburn out the USB port).
if it is a cheap adaptor, the voltage regulator may be limited to 100mA. thats what happened with me.
either way, in my eyes you have 3 choices.
1. buy a new adaptor
2. put a new voltage regulator in the adaptor (a friend did this for me)
3. use a converter so the adaptor you have will work in your wall.
nzdcoy said:
if the adaptor says it supports iPhone etc then that is why the USB debugging symbol is coming up.
because that symbol is up it will only charge at 500mA max (the phone thinks it is in a PC, it doesn't wnat toburn out the USB port).
if it is a cheap adaptor, the voltage regulator may be limited to 100mA. thats what happened with me.
either way, in my eyes you have 3 choices.
1. buy a new adaptor
2. put a new voltage regulator in the adaptor (a friend did this for me)
3. use a converter so the adaptor you have will work in your wall.
Click to expand...
Click to collapse
O I didn't realize if it was branded to work with iPhone it would charge slowly. Thank you for your help. Next time I'll watch out for a "Works for the iPhoney."
Bump
I would like to know how it ended?
I have a same problem, the only difference is that i have stock HTC AC charger with separate USB cable (stock too). When plugged to AC it shows "charging(USB)". Tried different cables, same result. Tried two different AC adapters, but both were from NOKIA, same result...
This might help your slow charging issue
If the wall charger is causing your phone to charge in a USB state, the charge time will be very long compared to a normal AC charging state which I'm sure you are aware of. A cable called QuickCharge might help. It will enhance USB charging to AC charging. You can find it on Amazon by searching for 'QuickCharge'. It's the 2nd or 3rd item down.
I am considering buying this usb charging adapter cable to help speed up my charging rate at work where I don't have an AC adapter and my work computer's usb ports are conveniently placed. From what I have read, normal usb charging maxes out at 500ma, but can be increased if your usb port has more juice if you short the data wires, which will tell the phone to grab more power because it thinks it is plugged into an AC adapter.
I have found this adapter http://www.dealextreme.com/p/usb-data-charging-extension-cable-for-samsung-p1000-black-91141
it is meant for a galaxy tab, but From what I see is that it has a switch that either allows data / slow charge or allows quick charging. I have purchased a few of these already because I'm assuming it will still work with my galaxy s2.
I'll let everyone know how it goes, but does anybody see a problem with this or think I'm going to fry my phone for any reason?
Thanks.
very interesting, heck it's only $3 bucks, might as well just buy it and find out
yes, charging via USB port sucks, it's too slow at 500 mAh
if that does the magic trick, by shorting it and making it believe it's an AC then it'll be nice, and it can pull around 1000 mAh off the USB port (depending on your computer mainboard)
Id be curious to see if this actually works but i see no fault in trying it
cbutters said:
I am considering buying this usb charging adapter cable to help speed up my charging rate at work where I don't have an AC adapter and my work computer's usb ports are conveniently placed. From what I have read, normal usb charging maxes out at 500ma, but can be increased if your usb port has more juice if you short the data wires, which will tell the phone to grab more power because it thinks it is plugged into an AC adapter.
I have found this adapter http://www.dealextreme.com/p/usb-data-charging-extension-cable-for-samsung-p1000-black-91141
it is meant for a galaxy tab, but From what I see is that it has a switch that either allows data / slow charge or allows quick charging. I have purchased a few of these already because I'm assuming it will still work with my galaxy s2.
I'll let everyone know how it goes, but does anybody see a problem with this or think I'm going to fry my phone for any reason?
Thanks.
Click to expand...
Click to collapse
Only the Galaxy Tablets have this limitation (they cannot be charged at all via computer usb only via their "special" wall adapter) so the adapter won't do anything for a phone. The adapter works on the tablet because what the adapter is doing is shorting 2 pins on the USB cable to fool the TABLET into thinking it is on the AC adapter "specially made" for it.
As long as you plug the phone it into a self-powered usb port (ie: a hub with a power brick) you will get max current the phone allows. The adapter will make no difference on the phone because the phone CAN charge off the PC port while the tablet cannot. It won't hurt the phone but it won't help it either.
MisterEdF said:
The adapter will make no difference on the phone because the phone CAN charge off the PC port while the tablet cannot. It won't hurt the phone but it won't help it either.
Click to expand...
Click to collapse
Thanks for the info on the galaxy tab, however I disagree with you in your opinion that an adapter that shorts the data wires will not help the phone to charge quicker.
It seems either the devices or android system itself limits charging to 500ma so it does not damage the computer, the phone itself knows that it is connected via usb, and will state "Charging: USB Plugged"
If you let the phone think it is connected to an AC adapter, it will allow the battery to accept whatever amperage you throw at it, and you will see that the system states "Charging: AC Plugged"
Obviously there are two modes of charging going on here.
See this thread:
see here:
http://forum.xda-developers.com/showthread.php?t=844284
Has anyone tried this yet?
I have found that using the Galaxy Tab chargers works the same way. They have a 2amp output vs the .5 amps that most blackberry chargers and USB use... It shortens the charge time significantly.
TMO SGS2, Darkside 3v8, Kernel Venom 3#5, UVLC8
Charger considerations
Hi,
I need advise for the following:
Charger A (Li-polymer battery) output : 5V, 1A
Charger B (Li-polymer battery) output : 5V, 500mA
Device input: 5V, 750mAH (Li-ion / Li-polymer)
When using Charger A, some people comment that it will limit the current of 750mAH for the device and the device's battery should be fine since both the charger and device are at 5V. However, some people comment that this will shorten the battery life of the device since it will perform a 'quick charge' using 1A.
When using Charger B, some people comment that the device will draw more current than it can deliver and causes it to heat up and reduces the charger's life. However, some people comment that Charger B will extend the battery life of the device since it performs a 'slow charge'.
I also read that USB pins on the charger denotes if the charger is a PC or a dedicated charger. If it is a PC, the device will limit the drawing current. If it is a dedicated charger, the device will draw more current to charge itself.
I am confused as to who is right and which charger should i be using.
Can someone enlighten me ?
Thank you very much.
What is the best solution for quick charging the Galaxy Nexus in an automobile?
I have started to use 12-220 volt converter so I can use wall chargers.
I have bought a few of the low profile car usb chargers but they were never recognized as an AC charge. Come to find out, it was the USB cable. I bought a usb charging cable from Amazon last week and it goes in the USB charger and the phone does not think it is a USB charge. I have not timed it but it is recognized the same as the wall charger.
http://www.amazon.com/gp/product/B003VYBCAY
ellisz said:
I have bought a few of the low profile car usb chargers but they were never recognized as an AC charge. Come to find out, it was the USB cable. I bought a usb charging cable from Amazon last week and it goes in the USB charger and the phone does not think it is a USB charge. I have not timed it but it is recognized the same as the wall charger.
http://www.amazon.com/gp/product/B003VYBCAY
Click to expand...
Click to collapse
+1 .. this solution has been working great for me, as well.
I've been getting 2.1A car chargers (look for ones for the iPad), most of the ones I had prior to this were 700mA or so and they can't keep up with my 1A phones. Be careful of dual port chargers advertising 2A, they may only be 1A each and may be "optimistic" about that rating. And don't worry about getting one rated for too much current, the Galaxy Nexus won't pull more than an amp no matter what the charger rating.
Some really good solutions here and thank you all for the help.
I'd really hate to use an inventer in my car just to maintain a clean install, so that really isnt an option for me.
Was really hoping to be able to use a off the shelf car charger with the correct pins to trick the GNexus into thinking that it was charging from a USB port, but the above solution should work well with using a socket USB charger.
I've never run into a car adapter that looks like a USB port, including the VZW charger with a spare port or the cheap 2.1A chargers I got from Amazon. My guess is that a charger not built correctly and leaving the data pins open only supports ~500mA anyway. Even if that's not the case I have a moral objection toward buying a cable to fix a design flaw in another cheap product - but that's just me
Grant H said:
Some really good solutions here and thank you all for the help.
I'd really hate to use an inventer in my car just to maintain a clean install, so that really isnt an option for me.
Was really hoping to be able to use a off the shelf car charger with the correct pins to trick the GNexus into thinking that it was charging from a USB port, but the above solution should work well with using a socket USB charger.
Click to expand...
Click to collapse
I've got a charger similar to http://www.ebay.com.au/itm/USB-Car-...ccessories&hash=item4ab18358f4#ht_1638wt_1392
All I had to do was undo the screws at the top, put a bit of solder between the middle usb pins, and my phone recognises it as a AC source rather than USB.
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Grant H said:
What is the best solution for quick charging the Galaxy Nexus in an automobile?
Click to expand...
Click to collapse
Make sure the charger has the IC (rapid) chip. I use this one:
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA
I've heard that Motorola one mentioned a lot as a good one.
The nice thing about having the low-profile usb plug is (a) it is low profile, (b) I can use it to charge other devices. The charge-only cable is only about $4, so I had no issues buying it to work with this to charge as an AC charge over a USB charge.
Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
I have this one and it charges just like it does from the home outlet and its says "AC" charging. I bought another 8 for family and friends and they all love it.
I think I've figured out the disconnect, I've run into chargers that appear as a USB host which limits the charging to 500mA on previous phones I've had.
You guys are concerned about USB vs. AC charging mode. Of the chargers I've got, this one lists as AC while the rest as USB. However, the fact that the other chargers all work just fine keeping up with GPS+streaming music indicates that the USB vs. AC really has no bearing on the charge current delivered. I'd stay away from charge-only cables just because they'll get mixed in with your standard USB cables and you'll knock yourself out wondering why they don't work. On the other hand, if you really want AC in your battery info order the one I linked.
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
TheKaz said:
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
What's much more important is the rating on the power source. The GN can pull up to 1000mA, if your charger is only rated for 800mA (like many car chargers) it doesn't matter if it's in AC mode.
jdbower said:
What's much more important is the rating on the power source. The GN can pull up to 1000mA, if your charger is only rated for 800mA (like many car chargers) it doesn't matter if it's in AC mode.
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Click to collapse
makes sense.. the one I use has dual usb (1.0 and 2.1)
You went and gave me a project for the weekend, and once again science prevails over anecdotal evidence. I took each of my 5 chargers and hooked them up to a 12V power supply that measures current. I then recorded whether the charger reported AC or USB, for the ones with USB I modified a right-angle adapter to short out the data pins, and I measured the current. The contenders:
Verizon Wireless Dual Charger
XTG Dual Port Charger
Griffen Powerjolt Dual USB Charger
Griffen Portjolt Micro
CostMad Dual USB Charger
The VZW model was USB out the external port as I had tested before, however AC out the built-in cable which I hadn't bothered to test. It pulled 0.25A @12V via the USB port and 0.59A via the cable. Hmmm... A hole develops in my previous observation. While I had used this on a long car trip with no issues, it was via the built-in cable.
The XTG was new, I hadn't used it before as it's in the car I rarely drive. It reported USB and 0.22A. With the adapter to make it report AC it pulled 0.48A.
The pattern was set. I had expected the Griffen adapters to be built more appropriately but the dual charger reported 0.22A without the adapter and 0.42A with. I had used this without losing charge in the past so this was surprising to me, but it's possible I just wasn't drawing as much current because the screen was dimmer or something.
The compact Griffen adapter (which is great for a laptop bag, BTW) pulled 0.21A and 0.47A respectively.
The cheap CostMad adapter was the only one that performed well out of the box, both reporting AC and pulled 0.57A.
In theory, a perfect adapter should pull 0.42A. Anything more is waste, anything less means it's not keeping up. I have doubts about the Griffen 2x allowing for a full amp, but the VZW and CostMad chargers are pretty lossy. What's even worse is that I'm pretty sure the VZW charger is rated for 800mA (but I can't find an actual spec on it) which would mean that it pulled the most power for the least current. Not that this really matters unless you've got an electric car.
Sorry for misleading you earlier, I should have checked the other port of the known-good VZW charger and probably doublechecked the numbers on my other "known good" charger. Still hating cables that work for charging but not for data, I ended up modifying each of the chargers to short the middle pins (except for the VZW one). If I didn't have the soldering iron for this, I probably would have gone for some of these instead.
Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
CyberPunk7t9 said:
Make sure the charger has the IC (rapid) chip. I use this one:
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA
Click to expand...
Click to collapse
I'm using the same one and it works perfect. Charges even when GPS navigation is running.
Make sure you select Amazon as the seller though. I heard there are a lot of fake ones.
Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
+1 to those recommending this one. I have this exact model and it does indeed charge at the "AC" rate, about twice as fast as the "USB" rate.
TheKaz said:
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
The Motorola one will charge even when using GPS. I have a friend I bought one for that uses his GPS all day and loves the Motorola charger.
So I got one of those cheap car chargers for phones recently and I realized that plugging it in with fast charged enabled would help me keep the charge up while GPS is draining away. My question is though, how do I know whether or not it is safe to? I really don't want to shorten the life of my battery or damage any components permanently.
The specs of the charger are as follows:
Input: DC 12v-24v
Output: DC 5.0v +/- 5%
Max: 1000mA
Fast charge only applies when it is connected to a computer.
That charger is perfectly fine in terms of the rated output you list. Dont worry, 1A is fine. As long as it its not so cheap that it fry's for some other reason lol.
Ah okay, thanks.
And is it really when its connected to a computer only? Just want this clarified
jadesocket said:
Ah okay, thanks.
And is it really when its connected to a computer only? Just want this clarified
Click to expand...
Click to collapse
Fast charge works when it shows charging as USB, there are plenty of cheap car chargers that don't charge as AC and thus would benefit from fast charging
EKnofsky said:
Fast charge works when it shows charging as USB, there are plenty of cheap car chargers that don't charge as AC and thus would benefit from fast charging
Click to expand...
Click to collapse
Car chargers don't connect as data transfer.
Fast charge turns off data transfer and makes the phone think the laptop is AC.
USB charging will only show (should only show) when it is connected in data mode. (Mtp)
nodstuff said:
Car chargers don't connect as data transfer.
Fast charge turns off data transfer and makes the phone think the laptop is AC.
USB charging will only show (should only show) when it is connected in data mode. (Mtp)
Click to expand...
Click to collapse
If the cable has the data connectors it will charge as USB I have multiple off brand car chargers that do NOT charge as AC
My car charger appears as AC because its a 1.2 amp charger so gives the full 1 amp output. I believe usb is detected only when connected at 0.5 amp which is why many car chargers show as usb. At least this is how the n1 works. It detects either 500 or 100 mA for either usb or ac.
I use a 2m aftermarket cable to charge my htc one in the bedroom, genuine short cable I keep for the car but I need a long cable for bedroom. Can you get a long genuine htc cable. Or how about if i use the original cable along with a usb extension, will it still flag as slow charging and fake charger...?
My usb extension shows is fake smoke charging recommend using HTC charger is message I get don't know if it's because of the brand of USB cable or if there is one that will work
Sent from my HTC One using Tapatalk
mrblue123 said:
I use a 2m aftermarket cable to charge my htc one in the bedroom, genuine short cable I keep for the car but I need a long cable for bedroom. Can you get a long genuine htc cable. Or how about if i use the original cable along with a usb extension, will it still flag as slow charging and fake charger...?
Click to expand...
Click to collapse
The cable you bought is a data cable, 28awg cable. You need 24awg if you want it to charge like a normal cable.
mrblue123 said:
I use a 2m aftermarket cable to charge my htc one in the bedroom, genuine short cable I keep for the car but I need a long cable for bedroom. Can you get a long genuine htc cable. Or how about if i use the original cable along with a usb extension, will it still flag as slow charging and fake charger...?
Click to expand...
Click to collapse
Are you using an HTC OEM AC to USB charger? If you are not, then that might be why you are getting that slow charge message.
http://www.ebay.com.au/itm/Black-3M...lePhoneAccessories&hash=item4ac6fe6c32&_uhb=1
i've got this and it charges really well, takes about an hour to charge from ~50%.
however it could be a combination of this cable and the Anker 5Port 40w charger.
Finding it hard to get a cheap cable in the UK. Amazon UK is near £30. I have found this one which specifies 28/24 but is still quite expensive...anybody see any cheaper for 28/24awg...
http://www.ebay.co.uk/itm/230910056755?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
xCal1bur said:
http://www.ebay.com.au/itm/Black-3M...lePhoneAccessories&hash=item4ac6fe6c32&_uhb=1
i've got this and it charges really well, takes about an hour to charge from ~50%.
however it could be a combination of this cable and the Anker 5Port 40w charger.
Click to expand...
Click to collapse
It probably is a 24awg cable. Not because of the charger since the the current would be limited by the thickness of the cable. Like I said, it's a simple case of buying the correct cable. OP your phone will charge slow with a DATA cable which is usually 28/28AWG. You need 24/28AWG (24 for 5V and 28AWG for data transfer). A good google search will find you these quite easily. Amazon is probably best bet
To be honest..
I probably wouldnt bother with thicker cables. I mean it will help but only a small amount. Install a Kernal like elementalX to enable the qualcomm fast-charge feature that HTC suppresses stock.
22 AWG okay for charging ?
CYNiCAL2KX said:
It probably is a 24awg cable. Not because of the charger since the the current would be limited by the thickness of the cable. Like I said, it's a simple case of buying the correct cable. OP your phone will charge slow with a DATA cable which is usually 28/28AWG. You need 24/28AWG (24 for 5V and 28AWG for data transfer). A good google search will find you these quite easily. Amazon is probably best bet
Click to expand...
Click to collapse
Hi, thanks for the information. My stock usb cable is broke now. i understand the phone requires 25awg for fast charge. i happen to fine a long cable of 22awg. will this work for M7 ? here is the link to it .. just wanted to make sure before i make the purchase.
http://www.ebay.de/itm/PortaPow-250...ories_MobilePhoneChargers&hash=item3388c6b27f
Thanks
CupiD101 said:
Hi, thanks for the information. My stock usb cable is broke now. i understand the phone requires 25awg for fast charge. i happen to fine a long cable of 22awg. will this work for M7 ? here is the link to it .. just wanted to make sure before i make the purchase.
http://www.ebay.de/itm/PortaPow-250...ories_MobilePhoneChargers&hash=item3388c6b27f
Thanks
Click to expand...
Click to collapse
Yeah that'd work fine
---------- Post added at 03:11 AM ---------- Previous post was at 03:01 AM ----------
APTXDAVE said:
I probably wouldnt bother with thicker cables. I mean it will help but only a small amount. Install a Kernal like elementalX to enable the qualcomm fast-charge feature that HTC suppresses stock.
Click to expand...
Click to collapse
No, they make a lot of difference. What he bought, is a USB cable initially, one which probably wasn't advertised as a 'charging cable' more a data cable. So they have a much thinner wire because 5v is not going through. Your average USB charging cable provided for mobile phones is 24AWG, with 28AWG cable for data, 'data only cables' off ebay are 28AWG and 28AWG (higher the number, thinner the wire), these take hours to fully charge a phone
fastcharge
If you are rooted, kernels like ElementalX and TeamSeven gives you the ability to activate USB fastcharge. Might help you if you experience slow charging