Develop Bugs

speed up usb charge?

Im a long time lurker, and been following alot of posts... let me just say that you guys really are geniuses...this is day 2 of having my tmobile tp2.. and i been reading your forums since yesterday morning non stop....
If you have the time im interested in this...
1- i seen a post on speeding up the time your usb charges your tp2. But didnt see the cab or the reg edit string.. if there is one... is there?
2- info for adding items, or removing "call history" from home screen? maybe replacing with more comon things like messaging...
3- any way to constantly keep a stock listed in the tf stock tab? instead of always having tgo type in the same stock?
4- i just bought tt6 for an older phone...obviously it wont work with tp2. and i dont want to pay $ for a new program. i spent it all on teh phone..
does WVGAFIX3 work? or any other programs top change res before starting TT6?
5- with out downloading or running programs.. when on homescreen, "camera" and "allpeople" are always on the bottom green bar.. can i replace them with somethign more usefull?
seriously....you guys are awesome...

Would also like to know how to speed up USB charging. Think i read somewhere you get 1000mah per hour with the charger and 500mah with USB charging.

yeah, home charger that came with the device is rated on the make as 1A, or 1000mah... and i do know that usb is 500mah.. or .5a standard..
but when using my tp2 while connected to usb, it sometimes gets a pop up message saying charge supply insufficient...
perhaps cable doesnt fit well in the phone? either way, usb charging is very slow...

USB ports on a computer cannot output more then 500Mah. this has nothing to do with the phone.
the Wall charger can only output 1000Mah, again, this has nothing to do with the phone. just the way it is.
if you wanted to charge the battery faster you could get a battery charger for Rccars. you will not get the battery to charge faster through conventional means.
FYI, the fastest you can safely charge the battery in the Tp2 is 1500Mah. (1C) or you will risk damaging the battery and limited recharge cycles.

By any chance are you sharing the same USB port with other devices through a USB hub?

not sharing any other devices on the usb port....
what you say makes sense, and i wouldnt use a charger more then 1000mah... not worth the risk...
MAYBE its all relative since working with it in hand constantly and charging usb wise...
ill actually test mine tomorrow and time how ling it takes to charge usb from 0 to 100%

just a note : current is measured in Amps or milliamps (ma) , mah is milliamp hours and refers to battery capacity. Chargers output ma , not mah.
Getting the insufficient power popup when trying to charge via USB means the computer isn't giving out enough current to the USB. Try using different USB ports... i've known some USB ports are able to give more power on the same computer... depending on what header theyre plugged into on the PC motherboard.

Try to find an original HTC Universal (Imate JasJar etc.) charger. It is rated for 1500ma. I use it once a month for my Touch HD (a somewhat higher amperage recharge can condition a weak battery but it gets pretty hot....so beware!) and I am still using my HD (9 months old) like it is new.
Regards,
Gordo

Hi Loueber,
in regards to point 4 I have used WVGAFIX3 with TT6, it basically swaps you phone to lower resolution leaving a black bar at the bottom of the display. But it does then allow older QVGA apps such ass TT6 to be run.
Hope that helps

This program should take care of you: http://www.nuerom.com/BlogEngine/page/nuePowernueBattery.aspx
without that the USB hub will only power up to 500ma, with that it'll go up to 1000ma like it would off a wall charger.

Not from USB, the wall charger offers a slightly higher voltage, and from that the phone knows it can draw down a higher amperage. The Nuerom power driver will maximize the power you can draw from USB, but it still will not draw over 500ma from USB.
Even if split the four wires from the USB charge cable, and hook power wires up to a 5.1V 1000ma wall charger, and the data wires to your computer it will STILL only draw 500ma. The phone has multiple different safety mechanisms to prevent draw of over 500ma from a USB port.
In short, the only way to charge at faster then 500ma is from a wall charger. Unless somoene hacks the power drivers for the TP2/Rhodium in a way that contravenes the built in safety mechanisms.

I used a female to female usb adapter.. usb to mini-b adapter.. and finally a Y adapter that came with a cheap (10$) SATA-to-USB hard drive enclosure.. It allows the HD to pull max current and not operate in wimpy .5A mode. This is useful for 7200rpm 2.5 inch hds.. but I digress.. One end is data+power, another is power only.. Pull the data plug and the charging light remains constant.. That tells me the TP2 is utilizing power from both sources. The same works for pulling the power-only plug.. I'm tempted to hook up the data port to the wall adapter and test out that 1.5A someone mentioned earlier..
I'll try it out tonight..
btw: I'm currently looking for a program to show me the power input.. So far, tbattery isn't playing nice with my 1% battery driver.

Blades said:
btw: I'm currently looking for a program to show me the power input.. So far, tbattery isn't playing nice with my 1% battery driver.
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Doesn't the previously mentioned nuePower control panel app do it?
There is some misconception on this.
In the USB connector at the phone, there is a pin that if grounded tells the phone to charge at a max of 1 amp. If it is floated, it charges at a max of 500ma. If you go over 500ma, you risk damaging some laptop USB ports, thus the reason for the limit when using a USB cable. The supplied charger grounds that pin and goes up to 1 amp.
So it doesn't matter if you have a 5.1 volt supply, or a 4.9 volt supply, or 1 amp available or 20 amps available. It will charge at 1 amp, or 500 ma. max depending on the charge mode pin.
The pinout that I have calls it pin B. It is the pin next to the ground.
http://www.hardwarebook.info/ExtUSB
I don't recall where I got it, but I have an inline plug that I can insert in the USB plug that has a switch. Flip that switch, and the current goes up to 1 amp from the USB port.

Theres a program called batteryinfo.exe located in \Windows. Its pretty simple.. but it does show the info I need. It does create a log file in \.. Safe to delete whenever (assuming app is closed). So far, I haven't seen anything above 1 amp.. Theres discharge current (how much mA your device is using) and charge current. They usually add up to around 1A.
This NC pin.. if this were grounded by the HTC AC adapter, wouldn't the other end (USB) of the cable have 5 pins?
I have the htc AV connector.. I'm sure that has all the necesary wires in the jacket. I don't want to cut it up yet tho..
It would probably be better to cut up a 'dongle'. I would make an rj45 connector for each row of pins. Once you have some cat5/5e/6 cable to play with, the possibilities are endless..
Any more info on this nc pin?

[Q] Charging Speed - Different from a/c than from USB?

So I was wondering: is there a difference in charging speed between the a/c wall charger and charging from my computer's USB port? Also, what's the difference between different chargers? For example, the Desire comes with a charger that puts out 1 amp. My girlfriend's BlackBerry has a micro USB charger as well, but the output is 700 mAh, or 0.7 amp. I've seen chargers ranging from 500 mAh (0.5 amp) to 1200 mAh (1.2 amp). How does this equate to charge time? Does it even? Or does the phone regulate the charge rate?

Benny_L said:
So I was wondering: is there a difference in charging speed between the a/c wall charger and charging from my computer's USB port? Also, what's the difference between different chargers? For example, the Desire comes with a charger that puts out 1 amp. My girlfriend's BlackBerry has a micro USB charger as well, but the output is 700 mAh, or 0.7 amp. I've seen chargers ranging from 500 mAh (0.5 amp) to 1200 mAh (1.2 amp). How does this equate to charge time? Does it even? Or does the phone regulate the charge rate?
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You've pretty much answer your own question!
The current supplied by a charger/USB port determines how fast it can charge the battery, which is why the wall charger (1amp) charges much faster than a PC USB port (0.5 amps).
Regards,
Dave

It's almost completely logical.. say you have a 1.5A battery (1500mA) and a 500mAh charger (ie USB) then it will take 3 hours for it to charge but with a 1000mAh charger it will take an hour and a half.
Can't really explain it more than that, so hth.

Well , Yes and No
This is only partly true ......
If you charge it on the PC , max output is 0.5 amps , and data is possible while charging .
Now with Desktop and car charger , the amp can be anything the manufacturer likes but you have to keep the following in mind :
USB Specs state the following :
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In Battery Charging Specification,[32] new powering modes are added to the USB specification. A host or hub Charging Downstream Port can supply a maximum of 1.5 A when communicating at low-bandwidth or full-bandwidth, a maximum of 900 mA when communicating at high-bandwidth, and as much current as the connector will safely handle when no communication is taking place; USB 2.0 standard-A connectors are rated at 1500 mA by default. A Dedicated Charging Port can supply a maximum of 1.8 A of current at 5.25 V. A portable device can draw up to 1.8 A from a Dedicated Charging Port. The Dedicated Charging Port shorts the D+ and D- pins with a resistance of at most 200Ω. The short disables data transfer, but allows devices to detect the Dedicated Charging Port and allows very simple, high current chargers to be manufactured. The increased current (faster, 9 W charging) will occur once both the host/hub and devices support the new charging specification.
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So if your Desire ( Yes , the Desire supports these specs ) detects the short , it will switch to fast charging mode otherwise it will limit the charging current .
Unfortunately , there's no way to know , just by looking at a charger, if it respects the specs or is just a low cost 5V powersupply . I've encountered quite a few ( mostly lowcost) desktop and car chargers that are rated between 1 and 2 amps , but still take bl**dy ages to charge the phone . Checking those with a measuring tool , you usually see the data pins are "Not Connected" instead of being shortened :-(((
Final Word .... don't try to save some money on a cheap charger , you'll regret it Genuine HTC works great , others do the same , but don't expect a $1 charger from Hongkong or whereever to do it !

These are the theoretical specs. Keep an eye on charger efficiency ratings and battery charge absorption won't be 100% in any case. Also bare in mind the charge is not linear, it will trickle after approx 80-90% with this phone.
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- Sent via my HTC Desire -

th3 said:
These are the theoretical specs. Keep an eye on charger efficiency ratings and battery charge absorption won't be 100% in any case. Also bare in mind the charge is not linear, it will trickle after approx 80-90% with this phone.
-----------------------------------
- Sent via my HTC Desire -
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Ya, I noticed the charge slows down considerably for the final 10-15 %
I find myself charging my Desire more than I actually use it, lol.

I found now the answer to this problem: I use a Nokia charger (5v and 890 mA) with a microusb adapter. You can find one on eBay at ~2$
Now it takes about 2 hours from 20% to 100%
Lets hope nothing wrong happens to my precious Desire

look here for a method to charge at ac speed from usb, explains a few things too.

Highest output car charger

Is this the highest?
http://www.seidioonline.com/product-p/pmc.htm
Post links if you know of higher ones, thank you.
Sent from my ADR6400L using XDA App

There are 2.1A usb adapters, but I don't think microUSB can take advantage of it. The one you linked is a 1A, which is the same as the wall charger HTC gave with the phone. I'm currently using a 1A usb adapter in my truck.

Ok that's probably what I'm looking for then. Are there wall chargers greater than what came with the phone that I can take advantage of?

Your best bet would be to try the USB adapters made for iPads. The Apple products can utilize the 2.1A chargers with their sync cables, but I'm not sure if a microUSB cable can though. I have some 2.1A wallchargers from some of my Apple products, I'll test them later and let you know what I find out.

http://www.verizonwireless.com/b2c/...ryDetails&archetypeId=12299&accessoryId=46370

I just got an Enercell from Radio Shack with dual usbs. Max output is 2.5A divided between the two ports.
http://www.radioshack.com/product/index.jsp?productId=11329448
on sale now for only $14.99. Seems to be of good quality.

The Motorola rapid chargers rock.

Guys, unless you mod the usb adapter 5V spec, you aren't doing squat with a "high power" adapter. The device has an input impedence that will draw a certain amount of current at 5v., and that's it.
Standard battery: 1400 mAh
Time to charge: 4 hrs (according to manual)
That's 1400/4 = 350 mA.
Most adapters on the market spec more than that, they're usually 500 mA or above. And again, unless you boost the volts, you're not going to be able to push more than 350 mA or so.
So don't waste you're money.
On the other hand, if your going to share a car outlet with another device like mp3 or ipod, then yeah, you'll need a higher output, two port, adapter.
Edit: It just occurred to me that if you're using the phone heavily while charging, then yeah you may need more than 500 mA. My currrent widget shows the phone can draw another 250 mA or so during use. That plus the charge totals to around 600 mA. But depending upon design, the phone may not be able to pull in all 600 mA. A test with a current meter would be real interesting.

The charger shipped with the Thunderbolt is a 1 Amp charger.
If I use a 500 mA charger the Current Widget shows a +450mA charge current. However if I use the 1A charger, I get a charge current of about +850mA.
Given that the google navigation gobbles over 400mA when running, you need a car charger with greater than 500mA capacity of you want the phone to charge at the same time.
Sent from my ADR6400L using XDA App

boingboingbilly said:
The Motorola rapid chargers rock.
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Good to hear, I ordered one today for $11 on ebay. I had heard other people say they liked that one too.

Ecomaniac said:
Guys, unless you mod the usb adapter 5V spec, you aren't doing squat with a "high power" adapter. The device has an input impedence that will draw a certain amount of current at 5v., and that's it.
Standard battery: 1400 mAh
Time to charge: 4 hrs (according to manual)
That's 1400/4 = 350 mA.
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Click to collapse
You're making the incorrect assumptions that the charging rate is constant, and charging is 100% efficient. Li-ion batteries can be charged at up to a 1C rate (i.e. 1.4A for a 1400 mA cell). Add the power drawn by the phone itself, and a 1.8 Amp charger might not be unreasonable (1.8 A is the specified limit for micro USB connectors). Whether the phone will actually do a maximum rate charge, I don't know.
This, from a TI Application Note (Google for SLAA287, board won't let me post links):
A Li-Ion battery charging process consists of three stages:
· Slow Charge: Pre-charging stage using current of 0.1C
· Fast Charge: Constant current charging stage using current of 1C
· Constant voltage charging stage
During the slow charge stage, the battery is charged with a constant low charge current of 0.1C, if the battery voltage is below 2.5V. The slow charge stage is rarely used during the charging process of a Li-Ion battery.
The fast charge (constant current) and constant voltage charging are the most important stages during a recharge process. Most Li-Ion batteries have a fully charged voltage of 4.1 or 4.2V.
The battery is first charged with a constant current of 1C until a battery voltage reaches 4.1 or 4.2V. The firmware continuously checks the charging current by sensing the voltage at the current sense resistor (Rsense) and
adjusts the duty cycle of PWM output from the MCU. The battery's voltage is checked frequently.
Whenever found the battery's voltage reaches 4.1 or 4.2V, the charger will switch to constant voltage charging mode. The battery is then charged with a constant voltage source at a fixed battery voltage of 4.1 or 4.2 V...When the charging current falls below 0.1C, the charging process must stop.
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Monoprice has Cig to USB(1A) chargers and the USB to Micro cables in multiple lengths(I ordered 6' ones) for far cheaper than you will find anywhere else

mike.s said:
You're making the incorrect assumptions that the charging rate is constant, and charging is 100% efficient. Li-ion batteries can be charged at up to a 1C rate (i.e. 1.4A for a 1400 mA cell). Add the power drawn by the phone itself, and a 1.8 Amp charger might not be unreasonable (1.8 A is the specified limit for micro USB connectors). Whether the phone will actually do a maximum rate charge, I don't know.
This, from a TI Application Note (Google for SLAA287, board won't let me post links):
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very useful, thanks!

walbuls said:
Monoprice has Cig to USB(1A) chargers and the USB to Micro cables in multiple lengths(I ordered 6' ones) for far cheaper than you will find anywhere else
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I second monoprice.

I tried bunch of cig to usb car charger and none matched advertised output... They all showed Charging (USB). I now use AC inverter and it charges just like a wall charger.

eccenpix said:
I tried bunch of cig to usb car charger and none matched advertised output... They all showed Charging (USB). I now use AC inverter and it charges just like a wall charger.
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I suspect you need to find one which properly follows the USB Battery Charging Specification. That link is to the most recent version, which came out on 7Dec2010 (remember Pearl Harbor!). Version 1.1 is easier - a Dedicated Charging Port is indicated by shorting together the data lines (the two middle conductors on a full sized USB connector. By doing so, it indicates the device may try to draw up to 1.8 A of current (although a dedicated charging port is allowed to limit the current to less than that, it must provide at least 1.5 A).
I bought a cheap USB hub with 5 ports, used an exacto knife to cut the traces going to the data lines (the middle two) on all the ports, and then shorted them together on each port. It's now no longer a USB hub, but a USB charger with 5 ports I can used to charge stuff (phone and Bluetooth, quite often). The AC adapter which it came with does 2 Amps. My Thunderbolt says "Charging (AC)" when plugged into it.
So, if you can open up one of your adapters, just solder a jumper between the middle two contacts (make sure they're not connected to anything else).

Just got the Rocketfish premium microUSB at Best Buy and it has a captive coiled cord and a USB port. TBolt says "AC plugged" and reads +670 mA.

Good choice on the Motorola Rapid Charge - I've burned through 3 other cheap car chargers trying to keep my phone alive while using Google Nav and this is the first one to work!

i have the rapid motorola one on amazon

lippstuh said:
i have the rapid motorola one on amazon
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+1 Works great! Battery widget usually shows about +800mA while only charging. Real close to the wall charger

USB Charging Slow

Can someone tell me why is it that when i charge my phone when USB connected to PC its takes hours together to charge and Wall Charger takes 1/4th of that time why is that can anybody tell me what is the login behind it and which is best way to charge ?

USB only outputs 5v, which is why it takes makes longer. You have more power outputted from the ac adapter therefore it charges quicker. Simple as that. They will both eventually charge the device, but it's recommended you use the wall charger all it's faster, no one likes to wait

+1
U cannot compare usb charging with ur charger as output voltage varies across both n btw usb is jst an alternative for charger it's not a replacement
Sent from my LT22i using Tapatalk 2

You can use a custom kernel and change charging current.
Sent from my GT-N7100

Ok thanks Guys to know what is the main difference

Technically, voltage has little to do with charging. The amperage is what counts. USB on a computer gives ~500 milliamp, where ac chargers give 1-2 amps
Sent from my SGH-I997 using xda app-developers app

For a more detailed answer...
All compatible chargers output the same voltage, 5 volts. (Otherwise they just would burn out the charging circuits in the phone. It can happen both if there's too much volts and if there's too little, but for very different reasons.) However, voltage is not the only characteristic of electricity, the other most important is current, that is, amperes. Think of volts as 'water pressure' and amperes as 'amount of water pumped per minute' through a water pipe -- with real water, those are connected, with electricity they're quite separate.
Every source of stabilized electricity you will find in any kind of power supply will have a set voltage it outputs electricity at, and maximum current it can output. Trying to draw more current than it can supply can damage the power supply, so your phone limits the current it attempts to draw when it detects a standard USB port -- to what the USB standard says it should be able to safely supply. For standard ports, it's 500mA. Galaxy Note II by default plays it safe and draws 425mA. The stock AC charger is rated at 2000mA, and Note draws 1700mA when it detects one. This specifically affects the speed of charging -- AC chargers will charge battery faster, because three times more power gets in.
The USB standard was written before everyone and their mother started using it as a charger, and today, USB ports can usually handle more than 425mA, and on some computers they can supply just as much power as the stock AC charger. There are a few standard ways to detect how much current can a phone safely draw from an USB socket, but not all of them are universally accepted or correctly implemented, so the phone always plays it safe when it can't be sure. If you install a custom kernel, you can directly tell it how much power to draw if you know your USB port can handle it.

:good: :good::good::good::good::good:

aukhan said:
:good: :good::good::good::good::good:
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You can use the app Galaxy Charging Current (GCC) from the S3 thread which can measure the output of the incoming current. It will also allow you to detect faulty cables and chargers, as you will be able to see different ratings with different cables and chargers.
Testing on typical USB ports will get you a reading of 460, while the original charger and a good cable will give you 1800 (about the max current draw for the Note 2).
If you use a known good charger and get a lousy reading, it indicates a bad cable. I once had a cable give a readout of 100. I promptly threw it away.

Yes i am using that thanks nyways

Does Plugging In A Fast Charger Do Anything?

Will it charge faster?
Does it do harm?

What do you mean by fast charger? also what tablet -
On my tab pro 8.4 when hooked to the stock 2A charger it will charge close to 2A (1870mA) , I haven't tried hooking it up to anything higher but I suspect its limited by the circuitry.
But generally charging at faster rates will shorten the life of the battery as it causes more heat and the battery can wear out faster, you should generally stick the the charging adapter provided with the device for best results.

I did it once. Is that bad?

Dankees said:
I did it once. Is that bad?
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Since the internal electricity limits the current, it doesn't do harm when the current exceeds the limit.

Dankees said:
I did it once. Is that bad?
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As long as the charger matches the tablet / phone voltage then it should be ok, so plugging in a 5V 3A charger won't hurt it in the short term.
Sometimes the cable matters too (depending on the charger), if the wall charger doesn't support fast charging natively (using internal shorted data pins), then the data pins in a usb cable might need to be shorted to tell the phone to charge using AC mode, this is known as a "charging cable" and will only work with that function (once modified you can't use it for data transfers), you can also purchase charging cables, Though nearly all modern wall chargers now short the pins for you so you don't need the special cable.
On Samsung devices you can see if its charging under AC or USB mode by going to Settings -> General -> Battery and see if it says Charging (AC) or Charging (USB).,
USB is limited to 500 mA , or perhaps 900 mA on usb 3.0 (might need kernel support, and usb 3.0), AC mode should draw as much power as the internal circuitry or the charger can allow .