Database Users

Great USB cable for full charge from PC

I picked up this cable at bestbuy last weekend before a camping trip to use in with my usb charger in the car. I got outside and noticed that while using it it showed up as an ac charger. So far, every PC ive used it on recognizes it as an AC adapter and therefor charges at full power. I had seen an earlier thread about a way to accomplish this, and i know it isnt done via a hack, but if you have 20 bucks, you have a solution to the problem.
http://www.bestbuy.com/site/olspage...p=&qp=&list=n&iht=y&usc=All+Categories&ks=960
Just noticed this should prob be put under accessories, but it didn't feel like the right spot for it. Mods, if it belongs there, please move it.
Thanks,
replaced link as links with prices from bestbuy do not seem to work. The item is the usb cable./
Added pics of a standard usb plug charge and the one i mentioned. You can see the grey rocketfish cord shows up as AC

linky no worky.
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wow, it doesn't work for me either, give me a sec and ill look it up another way. It is the Rocketfish usb charger with mini adapter.

There is no difference in charge time between computer usb and wall charger usb.

apristel said:
linky no worky.
Click to expand...
Click to collapse
Try it now, wouldn't let me copy pasta a link straight to the product. Click the link above, and its the second usb cable in the third row...can't miss it. Only downfall is its only 4 ft, but..

Bielinsk said:
There is no difference in charge time between computer usb and wall charger usb.
Click to expand...
Click to collapse
well please disregaurd my post, i was under the impression a standard usb cable plugged into the pc pulled 500mw and while in the ac charger, 1000mw or 1W.

i thought there was a difference in time, because it seems to take all day to charge from pc. charges alot faster from the ac adapter.

Bielinsk said:
There is no difference in charge time between computer usb and wall charger usb.
Click to expand...
Click to collapse
I hate to be the one to break this to you, but you're incorrect. First, a computer's USB port only has to put out 500 mA (that is the spec) - the HTC wall charger puts out 1 A (that's 1000 mA) (EDIT Thought I would add that these are both @ 5 V, so you have 2.5W or 5W of power...Power, current, and voltage are not interchangeable /BSEE lol). Second, the phone can tell when it is charging from the stock charger and when it is charging from a non-OEM 1000 mA charger or a 500 mA charger / USB port (it will say charging via AC or USB on the battery status page in the About Phone page of Settings).
So to the OP what you're saying is, this cable makes the phone think it's charging via it's AC charger? Have a picture? (not a screenshot, a picture of the phone screen showing AC while plugged into this charger).

TorxT3D said:
i thought there was a difference in time, because it seems to take all day to charge from pc. charges alot faster from the ac adapter.
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Click to collapse
It does, i was just being sarcastic. The above mentioned cable will allow you to pull full draw from your usb port on your pc.

phobos512 said:
I hate to be the one to break this to you, but you're incorrect. First, a computer's USB port only has to put out 500 mA (that is the spec) - the HTC wall charger puts out 1 A (that's 1000 mA). Second, the phone can tell when it is charging from the stock charger and when it is charging from a non-OEM 1000 mA charger or a 500 mA charger / USB port (it will say charging via AC or USB on the battery status page in the About Phone page of Settings).
So to the OP what you're saying is, this cable makes the phone think it's charging via it's AC charger? Have a picture? (not a screenshot, a picture of the phone screen showing AC while plugged into this charger).
Click to expand...
Click to collapse
Thanks for that, i try hard not to be a **** to people, but you handled it quite well. I will add a screenie to the front page shortly. I had made a custom cable myself and removed the two inner pins (data+ and -) to achieve this purpose. But keep in mind, when using this usb cable i posted, you can not sync to your pc-it will only charge-hence the fact my battery profile shows ac charger when using it. Give me a little to get to a camera to take a pic of the cable and a pic of the battery profile.

added pics to the first post

Computer USB can only output a certain amount of power, it isn't going to increase power with a cable.
I use Juice Plotter to see exactly what my battery life is, and how long it will take to charge. There is no difference in the charging time between USB and Plugged in.
Now on USB it will take longer because the screen is off and I am normally fustsing with it a lot, where when it is plugged in, I am not touching it at all and normally shut the screen off.
So even if a USB puts out 500mah and a wall charger puts 1000mah, I don't believe the phone has any type of switch to its micro USB to allow it to sense the mAh and adjust the charge. Else I would think your screen shots would show different numbers.

Bielinsk said:
Computer USB can only output a certain amount of power, it isn't going to increase power with a cable.
I use Juice Plotter to see exactly what my battery life is, and how long it will take to charge. There is no difference in the charging time between USB and Plugged in.
Now on USB it will take longer because the screen is off and I am normally fustsing with it a lot, where when it is plugged in, I am not touching it at all and normally shut the screen off.
So even if a USB puts out 500mah and a wall charger puts 1000mah, I don't believe the phone has any type of switch to its micro USB to allow it to sense the mAh and adjust the charge. Else I would think your screen shots would show different numbers.
Click to expand...
Click to collapse
Every windows mobile phone ive ever used could be manipulated to allow the usb port to pull 1000mw. It is a hack and there is work on finding it in the android system. I am hoping this cable bypasses that and if i can find any program that shows charge current, i can know for sure. Android os uses parameters to decide how much current to pull as does windows mobile.

Bielinsk said:
There is no difference in charge time between computer usb and wall charger usb.
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Click to collapse
Then why does my EVO take twice as long to charge when connected to my laptop, smart guy?
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Sent from my HTC EVO 4G using Tapatalk Pro.

Charging without Samsung AC Adapter?

I went out of town this week and made sure to grab my USB cable, but left the AC adapter at home figuring I'd just charge off my laptop via usb. Apparently not... I also tried plugging the USB cord into my iPhone AC/usb adapter with no luck. The only thing I've found is that when you turn off the Tab and connect to one of these devices, a green battery indicator will pop up showing that it is charging. Well, after about 16 hours, it made it from 15% all the way up to 48%. Does anyone know any way around turning it off to charge or why it is barely charging when it is off?

Jaydawgx7 said:
I went out of town this week and made sure to grab my USB cable, but left the AC adapter at home figuring I'd just charge off my laptop via usb. Apparently not... I also tried plugging the USB cord into my iPhone AC/usb adapter with no luck. The only thing I've found is that when you turn off the Tab and connect to one of these devices, a green battery indicator will pop up showing that it is charging. Well, after about 16 hours, it made it from 15% all the way up to 48%. Does anyone know any way around turning it off to charge or why it is barely charging when it is off?
Click to expand...
Click to collapse
Well seeing as it has a 7000mAh battery, just about any run-of-the-mill USB charger isn't going to cut it. The amperage would have higher as well. Now i would hazard that an iPad charger (10 watts) would probably work just fine vs an iPod charger.
Your laptop's USB port isn't providing enough juice to charge fully. With the screen off it will only trickle charge and very slowly at that.

You'll need at least 5 Volt 2 Amp chargers.
You can also try this:
http://forum.xda-developers.com/showpost.php?p=14890063&postcount=16
Or this:
http://cgi.ebay.com/190522553195?ru...ee-All-Categories&_fvi=1&_rdc=1#ht_3085wt_905
I've ordered both last week but neither have arrived yet. I'll report back.

You need a 5vdc supply that will provide 2A. 10W, not 5w as the previous post said. That adapter on ebay won't help the charge, it just disconnects the data line so it does not change its mode when connected to a computer. There are a lot of power supplies that will work and even more that won't, just made sure it supplies 2a. If you want to charge off your laptop then you will want a Y adapter similar to what is on usb powered hard drives but even then you will need to use 2 usb 2.0 or 3.0 ports and will provably only get 1a out.
Sent from my GT-P7510 using XDA Premium App

Charge tab 2 via usb!!!

As we know that we can not charge tab 2 via usb when connected to pc.
But there is a way:
do not insert whole usb to port at once.slowly insert the usb(connected to tab) to port(of pc) upto its approx 1/2-3/4 portion.you will see charging symbol on tab battery icon.it may take some time to figure it out.but it works.....
Note:it works on p3100 for sure and may work other models.
ENJOY!do not forget to hit thanx button...

a video demo how to do this should help :cyclops:
it works! thanks for the tips

i charged my tab via my computer. although it has an x above the battery it still charges.

mad5870 said:
i charged my tab via my computer. although it has an x above the battery it still charges.
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Click to collapse
no buddy if tab shows a x on battery that means it is not charging and tab is connected in kies/media device mode.but he you follow above method tab will show charging on battery.

I charge mine, with my galaxy note charger
Sent from my GT-P3100 using xda app-developers app

I jus got my tab 2 but it charges through usb... no tricks needed... it's slow though
cheers
B

berre said:
I jus got my tab 2 but it charges through usb... no tricks needed... it's slow though
cheers
B
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Click to collapse
which model you have?

I swear mine charges through the usb hooked up in the usb ports in the back of my desktop. I'll check in the am when we get a blown transformer fixed and the power back on. It's 99 degrees and will be a long night. :banghead:
Sent from my HTC One X using xda premium

Mine charges even when it has a x on the battery......
Sent from my GT-P3113 using XDA Premium App

Even mine charges....I have GT P3113

Droidlover123 said:
which model you have?
Click to expand...
Click to collapse
P5100
cheers
B

I wanted to add a clarification: when plugged into USB the notification popup indicates "discharging". But in fact it is charging, because the % charge goes up (slowly) with time.
The trick mentioned in this thread may make the tablet show 'charging', but I doubt that it makes any difference to whether it is really charging or not. The charge rate is determined by the max amps of the charger. The supplied Samsung charger is rated approx 2A; if you use the USB from the iPhone charger it is approx 1A (if you have USB 3.0 ports, that is also about 1A); but USB 2.0 gives you only 0.5A.

As said...charging over USB is painfully slow (2,5-5W). I prefer to charge it with the original adapter (10W )

Chuckles960 said:
The charge rate is determined by the max amps of the charger. The supplied Samsung charger is rated approx 2A; if you use the USB from the iPhone charger it is approx 1A (if you have USB 3.0 ports, that is also about 1A); but USB 2.0 gives you only 0.5A.
Click to expand...
Click to collapse
The tablet or phone will sense if the connection to the charger is AC mode or USB mode, if AC mode is detected then the tab will pull up to ~2.1 depending on the available rate from the charger, if USB mode is detected than the tablet will only draw ~0.5A.
The way the charger is configured will let the device know if it is an AC mode charger or if it is an USB mode charger.
By shorting pins 2 and 3 together on some chargers/cable the device will detect AC mode and it will pull more current.
I have a 1A 12V car charger that was wired for USB, an android device will see it as USB and pull only 0.5A, but an Apple device will pull the rated 1A. I shorted pins 2 and 3 and now android devices pull up to 1A, I am not sure but I think it is no longer compatible with apple devices (I don't own one).

It will say that it's not charging when plugged in via USB, but if you have it plugged in, it will charge, slowly. It takes forever if you're anywhere close to having a dead battery, and if you have wifi and other stuff turned on, it will take even longer but it should work, no tricks needed.

Thanks! Works on the 3113. It's shows charging and doesn't show as media device on the laptop. Nice find.

Hi.
I have a couple of these usb adaptors, see link below, I bought them years ago for the original 7" galaxy tab but i never used them.
If i plug my tab2 into an usb2 port i get the red cross on the battery icon, so i tried one of these adaptor and my tab2 is charging from an usb2.0 port on my notebook and according to battery monitor widget pro at 14% an hour, and i have a lightning bolt sign in the green battery icon.
I did a search for the adaptor i bought and i think i have found it for £6.50 each, see link below.
http://www.mytrendyphone.co.uk/shop/samsung-p1000-galaxy-63928p.html
John.

the tablet charges anyway so the icon says no
In 4.0.4 rom the charge icon its fixed, anyway charge by USB is too, too slow, only use for emergency

Droidlover123 said:
no buddy if tab shows a x on battery that means it is not charging and tab is connected in kies/media device mode.but he you follow above method tab will show charging on battery.
Click to expand...
Click to collapse
not trying to be a smartass but i know when my tab goes from 5% to a 100% while plugged in to my computer its charging. and yes still had the x.
Sent from my SPH-D710 using xda app-developers app

Mine P 3100 international version even x on battery while usb connected but still its slowly charging this occurred aso to tab 1 and tab 10.1 SII and note

HTC ONE Charging methods

At home I have an iPhone 5 charger and a Blackberry Bold 9900 Charger along with a Cooler Master Battery Bank. The out put on the battery bank claimed 5 Volts 2.1 Amps but when hooked up to my HTC One it showed USB Charging. I hooked it up via my iPhone 5 charger which has an output of 5 Volts and 1A and also got USB Charging but when I hooked it up via Blackberry Charger with an output of 5V / 750 mA I got Charging (AC) on my HTC One. Looks like it won't accept any higher power input than what it needs for faster charging.
Picture posted is via Blackberry Charger.

Here is a picture via Cooler Master Battery Bank showing charging (USB)

The maximum current is drawn when the battery is empty. The first phase of charging is constant current, where it will draw up to 1A from AC and 500ma from USB, then moves to constant voltage, where the current will drop off. Your battery is probably too charged to be drawing max current.
HTC phones switch to AC charging when the data pins on the USB are shorted, otherwise it's USB charging.

BenPope said:
The maximum current is drawn when the battery is empty. The first phase of charging is constant current, where it will draw up to 1A from AC and 500ma from USB, then moves to constant voltage, where the current will drop off. Your battery is probably too charged to be drawing max current.
HTC phones switch to AC charging when the data pins on the USB are shorted, otherwise it's USB charging.
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Click to collapse
I need to double check which USB cable I had used. At work now but just saw that the USB cable I had at work was the Blackberry USB Cable and when I hooked that one up with my new HTC ONE I got AC Charging on my HTC ONE. A sales person had told me that the USB cable can make a difference at times. Will try messin around with a few wires along with my Cooler Master Battery Bank to see if the results change.

desiregeek said:
I need to double check which USB cable I had used. At work now but just saw that the USB cable I had at work was the Blackberry USB Cable and when I hooked that one up with my new HTC ONE I got AC Charging on my HTC ONE. A sales person had told me that the USB cable can make a difference at times. Will try messin around with a few wires along with my Cooler Master Battery Bank to see if the results change.
Click to expand...
Click to collapse
I find that the charger it came with charges it fastest. The other chargers I have used are my neuxs 4 and gs4.

The phone is looking for a 'short' across the two data wires, I believe. The HTC chargers have this so that the phone knows it's not a USB port that isn't able to deliver the current. I'm surprised the blackberry charger fooled the phone to think it's AC.

[Q] Galaxy S5 not charging except with PC

I've been having issues with battery on my S5 for months since my purchase in late September. I have recently just bought another USB 3.0 adapter[ Insignia 3' USB 3.0 from Best Buy] which seemed to rectify my slow charge/short life problem. I recently used a Samsung USB wall adapter and it charged to 100% VERY quickly. The battery lasted for almost 2 days with regular use, being used to only a half day usually. So I had used a Micro USB charger rated at 5V = 550 mA and this would not work. I tried plugging my cable into a Samsung 5v = .7A adapter and still no luck. The cable lights up with an LED on the end when it has current, and it was lighting up on the wall but the phone does not charge, however it does charge on the PC. I've also been experiencing several issues with functionality, such as not being to control the phone sometimes because of the screen flashing, this happening after making a call I did not place. Would a factory reset potentially clear up this problem. Thanks in advance.

The stock samsung charger is 5.3v 2A (2000mA) you will need something with at least those specs to charge it properly
550mA is only 1/4 the power you need, and will likely pop the charger
0.7A is still only 700mA and less than half the power you need (2000mA / 2A)