Develop Bugs

USB not powerful enough to charge?

Anyone else having this problem. When I have my TMOUS TP2 hooked up to USB I keep getting told it's not getting enough power to charge.

Interesting. Is the USB plugged into a USB hub or straight into a computer? I can charge mine via USB when its straight into the computer. I'll try with hub a second to see if there is a difference.
Edit-
No, I cant. When plugged into a 4-port USB hub, I also cannot charge. I'm using some generic nonsense hub, dunno if a higher quality one (or one that also plugs into the wall for juice) might make a difference

Yes!
Many laptops are not powerful enough to charge the TP2. Also many hubs will divide the power between the ports.
A standard USB port will give you about 1A and the above mentioned gives you typically less than 1/2A.
Putting TP2 in standby will help if on a weak port, but that makes no sense, cause then you can use the charger.

It's directly in to my PC.. weird.

I got the "not enough power" USB warning when plugged into my laptop...but not right away -- it had been plugged in for 30-60 minutes or so.
I have not received that warning when plugged into the USB port of a full-power-desktop PC, even when plugged in for hours.
I try to remember to bring the ac adapter that came with my TP2 when I'm going to be away from home for a while so I don't have to depend on USB-power from a computer.

I charged off a 0.5A power source (the most you'll get out of a standard USB port), but the device was turned off. Took about 3.5 hours to fully charge it.
Did you have anything like wifi, gps, etc turned on at the time?

how much power is left on the phone? IIRC, if its too low, your phone will not charge through USB & you need the AC adapter.

There are "powered" and "unpowered" USB ports. The "unpowered" ones just basically carry enough current to carry signals, but not actually power a device. The "powered" ones carry enough current to charge a device.
Many laptops are "unpowered" ports, although I think that trend is changing. Most desktops I would assume are "powered".
I personally only power my phone on one of two official chargers I have, although if I'm in the car I'll use a third party adaptor there.
I don't know if the TP2 is any different than the Tilt in regards to charging, but I'd assume very similar.... Perhaps I'll have the TP2 soon, I've finally gotten ATT to let me have an early upgrade but haven't found the actual phone yet.

I have a 5v 1A car charger. When in the car if I am using Pocket Player, and my GPS program at the same time I will get the message that:
"there is not enough current to properly charge the device. Please should shut down unneeded programs." or something like that...
And sure enough, my phone will die if left like this. It won't charge, even though it shows that it is... curious.
Could it be the cable is not allowing enough current? I am using an older cable in the car, as I have my TP2 supplied cable on my computer....I am going to try swapping these 2 cables tomorrow and see what happens.

I've had my Sprint TP2 for 12 days now and experienced this problem once. I was plugged directly to my PC via the USB port. I believe my battery was at about 30% so I disconnected it and used the travel charger for awhile and plugged it back into the PC USB port. So far that's the only time it's happened.

Might be the cable!
cameraddict said:
Could it be the cable is not allowing enough current? I am using an older cable in the car, as I have my TP2 supplied cable on my computer....I am going to try swapping these 2 cables tomorrow and see what happens.
Click to expand...
Click to collapse
Hello,
I had exactly the same problem and found out it WAS the USB cable - the one used couldn't offer more than 300mA to the phone, even if connected to orriginal HTC AC adapter. After changing the cable, the 1A car charger gives the same mA as the AC adapter (checked with nuePower - http://www.nuerom.com/BlogEngine/page/nuePowernueBattery.aspx)
Radu

nradu:
Thanks for the info.. I haven't driven anywhere since I posted that! I will be in the next day or so... glad to know the answer is simple.
I too, just downloaded the NuePower program. Will be installing this as well. Did you by chance have the chainfire 1% battery cab installed? If so, did you unistall it first? Wondering if there will be a conflict between the 2.

cameraddict said:
Did you by chance have the chainfire 1% battery cab installed? If so, did you unistall it first? Wondering if there will be a conflict between the 2.
Click to expand...
Click to collapse
Hi,
Yes, I have chainfire's cab, I didn't uninstall it before installing NuePower (btw, I have tried once to uninstall it and after a soft reset, the 1% info was still there). the only bug I saw was when pressing the OK button in NuePower - sometimes phone hungs or runs very very slowly. Best is to use it only to test the cables and uninstall it. and don't press OK button, just minimize it with End Key or do a soft reset if handy.

Mine does the same thing lol
I get the same thing, i think they should make these devices use even more power.

Don't know if will help, but last night I was in my car using Live Search for GPS purposes. The battery was low on the phone, so I plugged it in. The phone told me that the source was not strong enough to charge the phone and to try shutting down some apps. I assumed that it was because the GPS was still active, although I really don't know because I didn't bother testing that theory, as I was just around the corner from my house. (No jokes about using the GPS to get home, please. )
Anyway, when I got home, I plugged into my laptop (which was running on AC power) using the cable that came with my XV6800. Note that the cable is always connected to my laptop via a cheap USB hub. I experienced no problems.

usb charge vs ac charge

Hey
Whenever ive had a phone with a usb port in the past ive usually charged it via USB connected to my PC. However, with the desire it takes about 45 mins to improve battery by 1% when connected to pc, whereas is takes about 1 min to do this when connected to AC. Ive never had this with any other phone which is why im wondering whether theres something wrong there
anyone else have this issue?

I'm pretty sure most devices do this.. any I've toyed with have..

it might be slower, but its never been this much slower. In fact, ive just had it plugged into usb for the last hour and the battery has gone DOWN 3%!!!!!

The current that you can draw through a USB port probably isn't as much! can't remember what the USB standard is but it's more that likely a lot lower than the AC charger

Yes, I am experiencing the same thing. On USB 1% every half an hour, on AC like 1% per minute. Still, I don't know what is causing this. The output power of AC and USB are different, but they shouldn't be this much.

is your laptop running on the mains or battery?
is your charging cable original (htc desire) ?

my laptop is running on the mains/AC but i am not using the cable that was originally bundled with the desire....should that make a difference though? Surely a USB cable is a USB cable?

Same here. Very slow on USB.
Wiki says this:
However, many devices require more power than this method can provide, and will not work in this type of hub.
USB current (related to power) is allocated in units of 100 mA up to a maximum total of 500 mA per port.
Click to expand...
Click to collapse

ive generally always charged my phone via USB and never had this problem with any phone. the desire must be sooo power hungry. Im actually at a stage now where even if i plug it into the USB port, it still loses charge

One usb hub can provide up to 500 miliamps of current, one port just 256. The ac adapter can give you 1000 ma. So do the calculations yourself
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Sent via the XDA Tapatalk App

Since I have had my desire I have never charged it via the charger my pc charges it even when its turned off and I've never had any problems with charge speed.
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Sent via the XDA Tapatalk App

i found the htc cable to be more effective than a micro usb one from samsung.

I've charged my phone from my PC loads of times. Takes about twice as long (roughly, I've never actually timed it).
Definitely not 1% per half hour though!

What is your setup and are you doing with the phone whilst it's connected?
With WiFi and 3G and the screen left on, I get +1% every 3.6mins using the PC USB.
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- Sent via my HTC Desire -

no, i definately dont get it charge that quick. Also, for the record, when using gps connected to a car charger, it doesnt ever charge, it only loses charge at a much slower rate (not good for long journeys!) unless i switch the screen off
When its connected to the pc im usually not doing anything with it. If even tried it with the phone switched off before, charged it like this for an hour and then when i turned it back on it had only charged by 2%
what do you want to know about the setup? Could it actually have something to do with the fact im not using the original bundled USB cable? I just cant see that being a factor

something is definitly wrong with either your cable your phone.
Let's try to cancel out one of those factors:
-have you tried using a different able?
I have NEVER used the AC charger, i've always used the usb charging method, and it takes about 2 hours for a half charge.

ill try using a different cable and see what happens. could the fact im charging it off a netbook be a problem? i wouldnt have thought so as i always charged my last phone (touch diamond) off this netbook too

ok, so it seems the USB cable used DOES matter. When using the original one it charges a lot quicker via USB ... AND AC
i didnt realise different usb cables have different power transfer rates....i guess now i do

Do this test.
Try to charge the phone while it's off.
The power controller of the phone needs to split the power between the phone requirements and the charging of the battery.
I think that your phone is drawing to much power so there is very little left for the battery charge.
So 1. test the usb cable 2. test the power consumption of your phone.

I have no problems charging my phone, when it's connected to my desktop.
Use it all the time at work.

[Q] 120v/USB wall combo outlet charges everything but the galaxy S4

Today I picked up and installed two combo 120v/USB wall outlets so I can get rid of all the wall warts I currently have. The USB ports charge everything (tablet, HTC phone, Bluetooth) but the two galaxy S4's I have. Has anyone used one of the outlets before? Any ideas on why they will not charge the S4's?
The Specs for the USB side of the outlet is.
Switching Frequency Typical 140 kHz
Output Voltage Nominal 5V (+/- 10%)
Protection Current Limiting and Thermal Shutdown Protection
Output Current Constant Current Maximum 2.1A
The outlet is a Commercial Spec Grade Combination USB Charger made by Cooper Industries
Part number is TR7745 if anyone wants to look it up for any reason.
Thank you in advance for your help.

change usb cables
Try changing to a different USB cable. It's weird how often this is the problem.

What does it do when you plug it in? Does it do anything at all? Does it even act like it's connected? Does it TRY and charge but just can't keep up? I have ones by Leviton that work fine with my S4 and my fiancees iPhone/iPad.
EDIT: I just noticed if you look at the reviews on Amazon HERE it seems multiple people have had problems with the S4 and this model. One thing I noticed with most that I looked at before buying mine was that the listed current was shared between the ports, whereas the Leviton version has one port that's 2.1 amps and one that's 1 amp independent of each other. This one might be 2.1 amps shared, so anything else plugged in might not work out.

02CWRX said:
What does it do when you plug it in? Does it do anything at all? Does it even act like it's connected? Does it TRY and charge but just can't keep up? I have ones by Leviton that work fine with my S4 and my fiancees iPhone/iPad.
EDIT: I just noticed if you look at the reviews on Amazon HERE it seems multiple people have had problems with the S4 and this model. One thing I noticed with most that I looked at before buying mine was that the listed current was shared between the ports, whereas the Leviton version has one port that's 2.1 amps and one that's 1 amp independent of each other. This one might be 2.1 amps shared, so anything else plugged in might not work out.
Click to expand...
Click to collapse
I'm having the same problem. It's listed as "dual 2.1A". The first second I plug it in it flashes the charging indicator, then it goes off. No charging happening whatsoever.

farkmeil said:
I'm having the same problem. It's listed as "dual 2.1A". The first second I plug it in it flashes the charging indicator, then it goes off. No charging happening whatsoever.
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Click to collapse
Did you ever have any luck with the S4 problem? Does it make a difference which side you plug the USB cable into?

re: charger
olneybrandon said:
Today I picked up and installed two combo 120v/USB wall outlets so I can get rid of all the wall warts I currently have. The USB ports charge everything (tablet, HTC phone, Bluetooth) but the two galaxy S4's I have. Has anyone used one of the outlets before? Any ideas on why they will not charge the S4's?
The Specs for the USB side of the outlet is.
Switching Frequency Typical 140 kHz
Output Voltage Nominal 5V (+/- 10%)
Protection Current Limiting and Thermal Shutdown Protection
Output Current Constant Current Maximum 2.1A
The outlet is a Commercial Spec Grade Combination USB Charger made by Cooper Industries
Part number is TR7745 if anyone wants to look it up for any reason.
Thank you in advance for your help.
Click to expand...
Click to collapse
Try using a different usb cable from phone to charger,
be sure both ends have a snug fit and it should work.
I have one which is similar to yours.
Since it puts out 2.1ma just like the stock S4 wall charger
it should charge just as fast.
Good luck!

bitbang3r said:
Did you ever have any luck with the S4 problem? Does it make a difference which side you plug the USB cable into?
Click to expand...
Click to collapse
Unfortunately no. I didn't mention before that I'm an EE, however, none of the troubleshooting steps I could think of had any effect. :crying:

Can use A Cooper USB Electric Outlet with S3 and S4
I saw this thread while trying to solve this very issue. I have the Cooper USB outlet and installed it thinking it would charge my phone and my wifes. It would charge her S3, but not my S3. She has the LTE version (SGH-I747) and I have the HSPA version (GT-I9300). Well I thought it would not charge my S3. After playing with it for a few minutes, I could get the charge light on the outlet to blink. No charging was happening as the charge light on the outlet would just blink and then stay off. On my wifes S3 I could plug it in it would start charging instantly.
After playing with my S3 and the cord (The same cord used for my wifes S3 as I had already tried numerous cords) I found I could slowly insert the micro usb end into my S3 and it would start charging. It was tricky, but after 30 minutes of wasted time, I got it to charge. I would have to ever so slowly plug it in, either at a sideways angle or at a slightly elevated angle. This was regardless of the usb cord used.
However my S3 died and I got an S4. Naturally my S4 would not charge just by plugging it in, but I tried the "slow insert" method, on both the micro USB side and the outlet side and both worked.
I am thinking there is some kind of tolerance issue surrounding the electrical connections. Sliding the USB connector in slowly at the outlet side, I beleive, would ground the connection first and then allow for charging, but this is where my knowledge of electricity starts to bad. That said it is possible to use the charge, but it is not plug and play.

I just picked up a couple of these for the kitchen to alleviate the eyesore of the wall warts and I can also confirm it charges everything I have thrown at it except my S4 (jfltezvw) =( I quickly found this post after googling it. I am currently doing some work on the phone now but I will attempt the super technical "plug it in slowly" later and see if it works =)
Has anyone had any luck with other brands? I find this REALLY odd.

just installed this same outlet, and sure enough it charges everything except the S4..."slow insert" doesn't seem to work...does anybody know of any other solutions besides not using it?

wall charger option
I also have one of these outlet/usb from cooper that will not work with my s4.
Has anyone tried to use a DUAL POWER micro USB cord (like the ones that comes with the portable hard drives) to see if that would do the trick?
unfortunately, I do not have one of these cables, or I would try it myself.
Here's what I am thinking is happening...
The S4 is equipped with a smart charger that can trickle charge after a complete charge cycle.
When first connected, the s4 starts a trickle charge while it tests the battery for the charge cycle.
The cooper is equipped with a current limiter that shares power between the two outlets.
The cooper unit sees the trickle charge, and switches to a lower current setting for the slot with the s4 plugged in. reserving current for the empty outlet.
The s4 then tries to engage a fast charge, but cant due to the lack of current, and shuts down the charge circuit.
If a dual usb cord to micro usb cable was used, both outlets would be tied to the s4, and full power would be available to the s4 at all times.
Of course, without a cable myself, this is almost all conjecture on my part, and I could be just blowing smoke up my own arse, huh?
LoVoltage
EDIT: Of course, remember that the cable you use has to have the D+ jumper to signify the 2.1 amp availability. If you don't, the cable won't work. (Most dual port usb cables have this jumper already. so does the OEM samsung cable)

Just installed one of these tonight. Specifically the Cooper TR7745/TR8245 15A/125V
I can charge my Note 2 (SGH-I317), Nexus 7 wifi, but not an Samsung Galaxy S4 (SGH-I337). Kinda weird.

[Q] Note 3 charging extremely slowly via USB

Hey all. I finally got my Note 3. I have been using it for a couple of days and, of course, it is awesome. But one thing is troubling me. I charge my phone via my desktop PC, which has several USB 3.0 ports. I first plugged it into the ones on the front, and it wasn't charging very quickly, so I plugged it into one of the back ports, and i'm still having the same problem.
For example, last night, I plugged it in around 1am at about 30%. It's now 7:30am and its at 96%. I would have figured it would be at 100 a while ago. I am using the original Samsung USB 3.0 cable that came with the phone.
I'll have to do a more scientific charging test to see what's going on, but has anyone else seen this?

The supplied charger puts out 2 amps. Which is much higher than any USB port on a PC will ever provide. That's why you're seeing such large disparities with charging rates.

Techngro said:
Hey all. I finally got my Note 3. I have been using it for a couple of days and, of course, it is awesome. But one thing is troubling me. I charge my phone via my desktop PC, which has several USB 3.0 ports. I first plugged it into the ones on the front, and it wasn't charging very quickly, so I plugged it into one of the back ports, and i'm still having the same problem.
For example, last night, I plugged it in around 1am at about 30%. It's now 7:30am and its at 96%. I would have figured it would be at 100 a while ago. I am using the original Samsung USB 3.0 cable that came with the phone.
I'll have to do a more scientific charging test to see what's going on, but has anyone else seen this?
Click to expand...
Click to collapse
A computer's USB 3.0 port is only spec'd to put out up to 0.9amps, compared to 0.5amps for the older USB 2.0, but the A/C charger puts out 2amps, so use that when charging time matters. I never use a computer's usb port for anything anymore except adb sideloading in recovery (where adb over wireless won't work). Note that SOME computers do have non-standard higher amp usb ports, but it's not that common.

ah I was also wondering why the charger itself charges the phone much faster than my desktop. Good info, thanks guys!

I have bought this item from ebay, it work great and charge the phone very fast
http://www.ebay.com/itm/190677630730?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Sent from my SM-N900T using xda app-developers app

Thanks for the responses people. I will use the plug from now on.

The charging speed will definitely slower than..?
It is the normal case that the speed will be much slower when you charge a device such as your Note3 via USB than via DC Power Supply. USB is mainly designed for the communication. The standard charging current of many mobile phones is 1 A or higher. But the highest output current of USB cable is only 0.5 A which could not reach the source demand of a phone. Except for this, we do not recommend charging via USB because the unstable current output can easily reduce the battery life of your Note 3.:laugh:

What to do if my phone does not charge using airline USB?

In my last two international flights (United and Norwegian), I noticed that my OP3 doesn't charge when plugged into in flight entertainment system USB. When plugged in the cable, I also tried Ampere to see charging levels but it indicates the phone is not charging.
During flights, after noticing the issue, I tried the following when plugging the cable, with no luck:
turning the phone completely off/shutdown
tried using two different cables (one standard and the other DASH), both failed but otherwise work fine if used in any other USB port (e.g., workstation).
tried different USB ports (where others were charging their devices).
I also asked others to try charge their phones on the same port, two different phones charged fine (one was iPhone and other Samsung).
I am running official OOS 5.0.1 with blu_spark kernel. The phone used to charge fine in flight few months ago, so not sure if it's a software issue...
Any thoughts or solutions?

I'm sure the USB port doesn't supply enough amperage to charge the phone. It's probably just like my truck's radio USB port, it will not charge my 3T.

mmurphmsu said:
I'm sure the USB port doesn't supply enough amperage to charge the phone. It's probably just like my truck's radio USB port, it will not charge my 3T.
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Click to collapse
if that is indeed the case, then, on a technical note, how much amperage OP3 needs?
(I am asking because, as I mentioned, on the same port iPhone 7 and Galaxy S8 were charging...)

200 said:
if that is indeed the case, then, on a technical note, how much amperage OP3 needs?
(I am asking because, as I mentioned, on the same port iPhone 7 and Galaxy S8 were charging...)
Click to expand...
Click to collapse
I have no idea. Maybe someone else would know that or you could ask OnePlus support.