Related
I remember on my WinMo phones there was a program to speed up the charging through a USB port. Anyone know of a similar app, hack, what have you for our Heros?
all that ever got me was an overheated phone. and defective batteries
Negrito said:
I remember on my WinMo phones there was a program to speed up the charging through a USB port. Anyone know of a similar app, hack, what have you for our Heros?
Click to expand...
Click to collapse
you could try a wireless charger, or use the normal wall charger or get a 3rd party battery.
I use a 3rd party battery, and my phone charges from Dead, to full in under 2 hours. i think my brand battery is a radioshack one but i dont remember, and im too lazy to look lol
If the phone detects that it's hooked to a USB port, it'll charge more slowly because the typical computer port will only output 500 mA. A wall charger typically does a full amp.
codelockdown said:
you could try a wireless charger, or use the normal wall charger or get a 3rd party battery.
I use a 3rd party battery, and my phone charges from Dead, to full in under 2 hours. i think my brand battery is a radioshack one but i dont remember, and im too lazy to look lol
Click to expand...
Click to collapse
No thank you, i dont need something else to carry around. I work next to a computer. it just sucks that if my phone is near dead in the am when i arrive to work it will have to be tethered to the computer most of the day to fully recharge.
kynetx said:
If the phone detects that it's hooked to a USB port, it'll charge more slowly because the typical computer port will only output 500 mA. A wall charger typically does a full amp.
Click to expand...
Click to collapse
yes, thank you. i know. that's why i am asking for a program to trick the device into believing its always the wall charger while its plugged into anything with that program running.
Negrito said:
yes, thank you. i know. that's why i am asking for a program to trick the device into believing its always the wall charger while its plugged into anything with that program running.
Click to expand...
Click to collapse
There is no point in "tricking" the device to think it's the wall charger because what you want is the phone to charge up, not to beleive it's charged up when it's not. The usb port will not output more than 500mA. The phone will only charge as fast as 500mA will get you, no matter what tricks we try to pull on them.
daveli said:
There is no point in "tricking" the device to think it's the wall charger because what you want is the phone to charge up, not to beleive it's charged up when it's not. The usb port will not output more than 500mA. The phone will only charge as fast as 500mA will get you, no matter what tricks we try to pull on them.
Click to expand...
Click to collapse
Actually, most USB 2.0 ports can unofficially support up to 1000mA (which is indeed out of spec), with the only limitation from the device itself which when in spec will not draw more than 500mA. This is why no2chem's Fastcharge worked on WinMo phones, by increasing the maximum limit on the device.
Rootwind said:
Actually, most USB 2.0 ports can unofficially support up to 1000mA (which is indeed out of spec), with the only limitation from the device itself which when in spec will not draw more than 500mA. This is why no2chem's Fastcharge worked on WinMo phones, by increasing the maximum limit on the device.
Click to expand...
Click to collapse
Thanks for the clarification, It's good to learn something new every day
Rootwind said:
Actually, most USB 2.0 ports can unofficially support up to 1000mA (which is indeed out of spec), with the only limitation from the device itself which when in spec will not draw more than 500mA. This is why no2chem's Fastcharge worked on WinMo phones, by increasing the maximum limit on the device.
Click to expand...
Click to collapse
Thank you so much for this post, i couldnt remember no2chem's nick to save my life. I wonder how he feels about dev in android.
daveli said:
There is no point in "tricking" the device to think it's the wall charger because what you want is the phone to charge up, not to beleive it's charged up when it's not. The usb port will not output more than 500mA. The phone will only charge as fast as 500mA will get you, no matter what tricks we try to pull on them.
Click to expand...
Click to collapse
I don't know where you're coming from, but the phone will indeed pull more current when it detects it's on a wall charger. I specifically remember seeing it in the manual.
Has anybody heard anything new on this matter, I really hate not being able to charge at 1A from a computer USB anymore. 500mA is pretty much useless, especially in constant usage, it pretty much just maintains the current %.
from less than 10% to 100% in about 30 minutes when plugged into the wall...turn your phone off while charging!! itll charge so much faster!!
This was specifically about usb....
I seem to remember hearing you can tweak some usb wires (I guess remove the data pins) so the phone thinks it's on AC but I'd want to have connectivity as well as the swift charging. Otherwise I'd have to have two cords on me, though I wonder if the phone charges "AC speed" while off (since there's no mind to talk to the PC's OS)
Negrito said:
I remember on my WinMo phones there was a program to speed up the charging through a USB port. Anyone know of a similar app, hack, what have you for our Heros?
Click to expand...
Click to collapse
yup, i remember that too, it was called fast charge.
iviyth0s said:
I seem to remember hearing you can tweak some usb wires (I guess remove the data pins) so the phone thinks it's on AC but I'd want to have connectivity as well as the swift charging. Otherwise I'd have to have two cords on me, though I wonder if the phone charges "AC speed" while off (since there's no mind to talk to the PC's OS)
Click to expand...
Click to collapse
I know this does't work, as I have a cable with no data pins (it's a cheapy charge cable only) and it's still slow on a pc to charge.
Get a USB 3.0 port.
swears11 said:
Get a USB 3.0 port.
Click to expand...
Click to collapse
ummm... you mean you would have to buy a whole new mobo with usb3.0 support.
I have a belkin travel power surge protector with 3 outlets and 2 usb ports on it. The phone, when plugged into it, doesn't detect that it is plugged into AC power and just charges at USB speeds. Anybody know why? Will it only charge at AC speed if it detects the HTC supplied Ac adapter?
danaff37 said:
I know this does't work, as I have a cable with no data pins (it's a cheapy charge cable only) and it's still slow on a pc to charge.
Click to expand...
Click to collapse
I have a cheapy cable too and that might be why it's still slow. I don't use the cable anymore because my TP used to charge at like 200mAh with it.
swears11 said:
Get a USB 3.0 port.
Click to expand...
Click to collapse
But the problem here is with the software not hardware lol, all someone has to do is change the value of "when connected to computer: Charge 1A" instead of "when connected to computer: Charge 0.5A" (simplified of course)
gunnyman said:
I have a belkin travel power surge protector with 3 outlets and 2 usb ports on it. The phone, when plugged into it, doesn't detect that it is plugged into AC poer and just charges at USB speeds. Anybody know why? Will it only charge at AC speed if it detects the HTC supplied Ac adapter?
Click to expand...
Click to collapse
Because it was a stupid idea to ever limit the charge speed. lol
If only I knew how to program or to edit code, I'd so fix this for all of us >_<
I've tried searching, but came up with nothing (not even on Google).
It seems to me that my HD2 charges up much quicker when connected to the mains than it does when charging via USB - is this correct ? I'd prefer to only charge via USB as, that way, the phone is still syncing, but it sometimes takes forever to get to full charge that way.
Just wanted to get others' opinions on this.
wilsojer said:
I've tried searching, but came up with nothing (not even on Google).
It seems to me that my HD2 charges up much quicker when connected to the mains than it does when charging via USB - is this correct ? I'd prefer to only charge via USB as, that way, the phone is still syncing, but it sometimes takes forever to get to full charge that way.
Just wanted to get others' opinions on this.
Click to expand...
Click to collapse
The wall charger charges at 1 amp.
USB, with a powered USB socket, will max out at half that due to the 500mA standard that USB uses.
So, in theory, it should take twice as long to charge on USB alone.
Plus the 500mA limit on USB is spread across several physical ports, so if you have anything else plugged in then you'll be charging at an even lower rate.
Good to know - thanks, guys - I learnt something new today
Guess I'll charge via mains going forward.
Thanks again !
plus when connected to active sync the phone is on, when its I wall charger it will be on standby.
Despite HTC shipping a 1A charger (which is the most I've ever seen for a USB charger) Lion battery prefer not to get cooked while charging and would last longer if charged at 500ma.
rp-x1 said:
The wall charger charges at 1 amp.
USB, with a powered USB socket, will max out at half that due to the 500mA standard that USB uses.
So, in theory, it should take twice as long to charge on USB alone.
Click to expand...
Click to collapse
samsamuel said:
plus when connected to active sync the phone is on, when its I wall charger it will be on standby.
Click to expand...
Click to collapse
Exact, the phone actually limits what it draws from an USB port to about 450mA (some safety margin). Then, is stays powered on and active (due to ActiveSync running), drawing approx 100mA. So it actually charges at about 450-100= 350mA, taking ridiculously long (4-5h) to charge. With the supplied charger it charges at 850mA.
Aterlatus said:
Plus the 500mA limit on USB is spread across several physical ports, so if you have anything else plugged in then you'll be charging at an even lower rate.
Click to expand...
Click to collapse
Wrong, each port gets 500mA.
airwater9 said:
Despite HTC shipping a 1A charger (which is the most I've ever seen for a USB charger) Lion battery prefer not to get cooked while charging and would last longer if charged at 500ma.
Click to expand...
Click to collapse
Li batteries support 1C charge without drawback (would be 1.32A for the HD2's battery).
Wrong, each port gets 500mA.
Click to expand...
Click to collapse
Incorrect. The USB standard requires 500mAh nominal at any port when used alone. Manufacturers then decide whether they will "over specify" or not. You will not get 2mAh from a 4 port USB bus unless the internal power supply its built for it and many are not. Current is drawn by the device and if the draw exceeds the supply rating then there is a shortfall to all devices. It all depends on how well the equipment is specified and there its wide variation.
More details about charging here
pa49 said:
Incorrect. The USB standard requires 500mAh nominal at any port when used alone.
Click to expand...
Click to collapse
Read page 171 of the USB 2.0 specification:
Root port hubs: Are directly attached to the USB Host Controller. Hub power is derived from the same
source as the Host Controller. Systems that obtain operating power externally, either AC or DC, must
supply at least five unit loads to each port. Such ports are called high-power ports. Battery-powered
systems may supply either one or five unit loads. Ports that can supply only one unit load are termed lowpower
ports.
Click to expand...
Click to collapse
A port is either low power, in which case it can supply 1 unit load (100mA), or high power, which can supply 500mA. There's no spreading between ports, for each port if it's a high power one it must be able to supply 500mA at any time, if it's a low power one it will never provide more than 100mA. So there's no such thing as one that provides 500mA if used alone and less if others are connected... or the manufacturer is violating the spec.
Note that low power ports pretty much don't exist on PCs. They can be found on multimedia players with host function for example, which are just good to power a USB key or card reader.
Further on the page you can see that with hubs that don't have external power, the output ports are required to be low power ones, so that a 4-port hub can give one of the 5 unit loads it receives to each port, plus one for its own power, so you can't draw 500mA on any port of a bus-powered hub and be within spec.
Now if you could refrain from misleading users... can't count anymore how many times I've corrected you on your firm affirmations...
I woke up this morning and the battery of my Atrix was completely dead. Since I was in a hurry to get to work I thought I'm going to charge using the computer in my office with the supplied USB cable.
It appears that the phone won't charge from 0% turned off! I had to borrow a Blackberry wall charger from a college and jump start the Atrix before plugging it to my computer's USB and start charging.
My iPhone 3GS would come back to life if plugged to the USB port after a complete discharge.
Is there a solution for the Atrix? Are there other android devices you know of with the same issue?
Thank you
my milestone also have this prob
The moto wall chargers run at 800+ma. This is more than the usual ~400-600ma that other chargers run at. Computer USB ports only supply 500ma MAX. The atrix doesn't seem to like anything under ~600ma and prefers 800-1000ma for some weird reason.
If you've got a well powered USB port, it will charge the phone. If it's underpowered, the phone won't even take the charge.
Yes, from a dead batt, the phone wont even wake up the charge circuit for anything under 600ma. I've experienced it as well.
Thank you. What about USB 3.0? I have that in my home PC. But it still sucks how I can't wake up the phone if the battery completely drained with all the USB around me at work or wherever when a wall-charger is not within reach.
Shouldn't the phone preserve the last drops of the battery before shutting down so it allows us time to start it up again and charge by USB 2.0?
I think it wouldn't hurt if Motorola made it shutoff at like 2% allowing us to charge the device and get it up using USB 2.0. Or maybe a dev can get around it as an optional tweak for users?!
That also made me think of something else. Would the alarm go off if the battery completely died while you were asleep? I know iphone, Nokia and probably many other smartphones does that (preserving last drops for this purpose).
all usb has the same voltage specs, 3.0 ports wont charge better than 2.0 ports on the same system, the only thing that will make a difference is the build quality of the hardware and the voltage regulation from the power management.
A powered usb hub would be your best bet if you can't get to a moto charger
diedemus said:
all usb has the same voltage specs, 3.0 ports wont charge better than 2.0 ports on the same system, the only thing that will make a difference is the build quality of the hardware and the voltage regulation from the power management.
A powered usb hub would be your best bet if you can't get to a moto charger
Click to expand...
Click to collapse
I thought it's better to bring up this thread instead of opening a new one since I've been investigating the same issue.
We all know that Android phones and widgets especially can drain the battery unexpectedly.
I PM'ed kennethpenn if there's a way to automate a shutdown when the battery reaches a certain level so it can charge and wake up connected to a computer USB 2.0 port (As in if it can be implemented in his ROM). Kenneth replied that he's not sure, and I've been looking for an app that can do that.
Now before we go more on that, I wish to have your opinion on how important you think it is to sacrifice the last little drops of the battery in favor of being to charge/wake up your devices when you're on the go and may not have access to wall charger?
If there's an app that can allow it then I'm welling to do the tests and find the sweet spot of when to shutdown and if it would actually charge to wake up.
Thank you
I had the same problem yesterday, I only have the USB cord with me and I thought my phone was dead for real or defective. Thanks god for XDA ... The user manual did not say anything about computer usb power not being powerfull enough.
CyberPunk7t9, there is (a few) threads dedicated to improving Atrix battery life full of usefull tricks. I did not try it yet, but SetCPU might be of a great help too.
Remeber, the Atrix requires the Motorola usb drivers to be installed to charge the phone off a port. If the phone is off, your computer is not reconigizing that it was plugged in, so the drivers do not start. *I could be wrong* Happen to me last night though
it's a hardware issue on the computer side. without the moto drivers there telling the USB port to up the current coming out, your phone won't charge on it. most computer-based USB ports do not run high current for power purposes unless enabled. it cannot be solved with an app and mandating a shutdown at 2% is most likely going to cause more problems than solve. the solution is to not run your battery down, honestly. you shouldn't be for LiPo batteries anyway.
diedemus said:
all usb has the same voltage specs, 3.0 ports wont charge better than 2.0 ports on the same system, the only thing that will make a difference is the build quality of the hardware and the voltage regulation from the power management
Click to expand...
Click to collapse
It's not voltage that matters, it's current.
I have a gigabyte board which has 'rapid charge' technology, meaning it supplies extra amperage to the usb ports...my battery was close to dying when I saw this thread so as a test I let it completely die and then I tried charging from usb.
Result: It worked.
I still don't get as quick of a charge from USB as I do from the wall but at least there is enough amperage to charge from a completely dead state.
diedemus said:
all usb has the same voltage specs, 3.0 ports wont charge better than 2.0 ports on the same system, the only thing that will make a difference is the build quality of the hardware and the voltage regulation from the power management.
A powered usb hub would be your best bet if you can't get to a moto charger
Click to expand...
Click to collapse
Get your facts straight!..............USB 3.0 IS a powered USB port!
USB 3.0 will charge more devices, quicker
Not only will USB 3.0 cables facilitate faster transfer speeds, but they’ll carry more power, too. The USB-IF recognizes the growing number of portable devices that charge via USB (cellphones, MP3 players, digital cameras), and have bumped the power output from about 100miliamps to 900 milliamps. That means not only will you be able to power more than 4 devices from a single hub, but the increase current will let you charge up heftier hardware as well.
Maximum PC
<edit> Also, my Atrix charges fine off the 3.0 ports on my HP laptop.
dcarpenter85 said:
I have a gigabyte board which has 'rapid charge' technology, meaning it supplies extra amperage to the usb ports...my battery was close to dying when I saw this thread so as a test I let it completely die and then I tried charging from usb.
Result: It worked.
I still don't get as quick of a charge from USB as I do from the wall but at least there is enough amperage to charge from a completely dead state.
Click to expand...
Click to collapse
I have a gigabyte UD7 in my PC. I wanted to use the rapid charge feature for a while. Still planned. Also the On/Off Charge feature to charge the iphone/ipod while the computer is turned off. I will probably assign some time to test those tomorrow.
CaelanT said:
Get your facts straight!..............USB 3.0 IS a powered USB port!
USB 3.0 will charge more devices, quicker
Not only will USB 3.0 cables facilitate faster transfer speeds, but they’ll carry more power, too. The USB-IF recognizes the growing number of portable devices that charge via USB (cellphones, MP3 players, digital cameras), and have bumped the power output from about 100miliamps to 900 milliamps. That means not only will you be able to power more than 4 devices from a single hub, but the increase current will let you charge up heftier hardware as well.
Maximum PC
<edit> Also, my Atrix charges fine off the 3.0 ports on my HP laptop.
Click to expand...
Click to collapse
I have USB 3.0 in my PC too. But as someone stated here, USB 3.0 does not provide more voltage than USB 2.0. Just more consistency I think.
But what matters, Can any of those solutions charge and start a completely dead Atrix?
Thank you for participating guys.
USB ports can only source 100mA unless the host and client agree to a higher current. If as mentioned the Atrix needs more then this to wake-up the phone with a dead battery then it can never request the higher current. This is also why the Moto drivers need to be installed to get the higher current.
CyberPunk7t9 said:
I have USB 3.0 in my PC too. But as someone stated here, USB 3.0 does not provide more voltage than USB 2.0. Just more consistency I think.
But what matters, Can any of those solutions charge and start a completely dead Atrix?
Thank you for participating guys.
Click to expand...
Click to collapse
you need a port or power source that will supply enough current to the phone. period. if your computer's ports don't do it, it won't work. go find a higher amp USB port.
Maybe try the usb 2 to 1 cable? So you plug it into 2 usb ports and than into the atrix
CaelanT said:
Not only will USB 3.0 cables facilitate faster transfer speeds, but they’ll carry more power, too. The USB-IF recognizes the growing number of portable devices that charge via USB (cellphones, MP3 players, digital cameras), and have bumped the power output from about 100miliamps to 900 milliamps.
Click to expand...
Click to collapse
Actually USB 2.0 can supply 500 mA, but as someone said to get more than 100 mA, the host and device have to 'negotiate' which I think means driver support of some kind.
I have noticed in Device Manager says that my SGS plugged into my laptop as a mass storage device is only taking 100 mA, but it doesn't charge much slower than it does from a wall charger (which is actually pretty slow, almost 3 hrs for a full charge). Still if I do the math to charge 1500 mAh at 3.7V with 5v in 3 hours would take about 370 mA (assuming 100% efficiency, so the actual current draw must be higher).
If anyone knows a more accurate way of determining the current a USB port is supplying, since Device Manager seems to be wrong, that would be interesting information.
What's interesting here is that at 0% the device isn't even on and can't power up to negotiate a higher current draw. If it can't turn on with 100 mA from the charging port it's stuck, which I suspect is the problem here with the Atrix.
USB 3.0 has the potential to charge at 900mah but yes it’s still 5vdc, the phone will not pull more than 500mah unless it detects the data lines are bridged. This is a safety feature so it doesn't blow your usb2.0 ports as the phone wasn’t built with usb 3.0 spec in mind. If you have a 3.0 usb port you can make a fast charge cable with the data lines cut and bridged, make sure you cut them and they aren't still connected to the host side or you might kill your port.
callen81 said:
USB 3.0 has the potential to charge at 900mah but yes it’s still 5vdc, the phone will not pull more than 500mah unless it detects the data lines are bridged. This is a safety feature so it doesn't blow your usb2.0 ports as the phone wasn’t built with usb 3.0 spec in mind. If you have a 3.0 usb port you can make a fast charge cable with the data lines cut and bridged, make sure you cut them and they aren't still connected to the host side or you might kill your port.
Click to expand...
Click to collapse
mA, not mAh
dLo GSR said:
mA, not mAh
Click to expand...
Click to collapse
I'm so used to talking about batteries I guess I left the "h"ours in, haha.
I would like to charge my SGT 7.7 with the normal USB cable it came with on my pc; however, due to its lower mA output (USB standard is 500mA). The standard adapter it came with has 2000mA (2A) output, hence it detects and charges. However, I do notice that the unit charges at 1A with my iPhone charger, perhaps just a bit slower.
Anything we can modify in the rom to enable force usb charging? there is such a way in SGT 10.1 but I can't find a method similar to it on my 7.7
it charges when the device is in a powered off state... but very slowly
onicrom said:
it charges when the device is in a powered off state... but very slowly
Click to expand...
Click to collapse
Yep, it does.
But I would like to keep my device on while charging...
it's very slow because device detect voltage in data line. check out adapter in ebay.
Sent from my GT-P6800 using xda premium
zoftdev said:
it's very slow because device detect voltage in data line. check out adapter in ebay.
Sent from my GT-P6800 using xda premium
Click to expand...
Click to collapse
Yeah understood.
I'm using the Galaxy Nexus USB charger and it works well (1A)
but the iPhone 4S charger does not (also 1A)
kazuni said:
Yep, it does.
But I would like to keep my device on while charging...
Click to expand...
Click to collapse
Mine still charges even with the red X on the battery icon. Albeit, very slowly, and only really when the screen is off. Not bad for just listening to music while I'm at work!
USB charge adapter
To charge your GT7.7 using a usb cable you need to have an adapter.
You can make an adapter from the below parts. See attached images of the end result.
user rick75204 explains it best below.
http://forum.xda-developers.com/showthread.php?t=845844&page=2
USB Extension Cable
33k-Ohm Resistor (Shack Part No. 271-1129)
10k-Ohm Resistor (Shack Part No. 271-006)
Steps:
1. Cut USB Extension Cable in half, lets name the 2 halves, the half you will plug into the power suppy will be called "Cable A" and the half that you plug into the Galaxy Tab Data Cable will be called "Cable B"
2. On 'Cable A" strip outer plastic to expose all wires within, eliminate Green and White on this cable only as it will not be needed, leaving you with only the Red and the Black Cables
3. On "Cable B" strip outer plastic to expose all wires within, this should leave you exposing all 4 wires
4. On "Cable B" strip both the Green and White wires and join thes 2 wires with the 2 resistor ends (you should be using the resistor ends that have the red band with these wires), these can be joined by either soldering or just twisting together.
5. Strip Red wire from both cables and join together with the 33k-Ohm Resister (this will be the larger of the 2 resistors and should also be the end with the Gold Band) and as well join these together with solder or just twisting together.
6. Repeat the above process with the Black wires and 10K-Ohm Resistor.
7. No finally use Electrical Tape or Shrink Tubing to cover all your work.
USB Charging
Hi Guys
I recently bought a "Samsung Charging Adapter" from power gorilla for use with their portable power packs.
It is a usb adapter which when used in line with the Samsung USB cable, charges my 7.7 while I am using it from a 500ma USB port on my MAC ....
Philip
This works great for $7, has a switch to go from data to charging
http://item.mobileweb.ebay.com/viewitem?itemId=160709394617
how do you force charge on Galaxy Tab 10.1??
razorwokid said:
how do you force charge on Galaxy Tab 10.1??
Click to expand...
Click to collapse
Wrong forum Look in 10.1 development forum, in the thread for pershoot's kernel. Or buy one of the cables mentioned above.
morkli said:
Wrong forum Look in 10.1 development forum, in the thread for pershoot's kernel. Or buy one of the cables mentioned above.
Click to expand...
Click to collapse
Thanks for the response
I have similar charging problem with the stock data cable, but I could be able to charge with a USB 2.0 mini USB cable with a Galaxy Tab to mini USB convertor as shown below.
And I even use an USB extension and it is charging up just fine.
I just ordered this
http://www.ebay.com/itm/Micro-USB-t...-Galaxy-Tab-P1000-7500-7510-730-/170969489675
for $2.99 I hope it works. The things we go through in order to be not price gouged..
I have an existing HDTV (HDMI) adapter and its charging well with the included usb data cable of 7.7. :good:
http://www.samsung.com/us/mobile/galaxy-tab-accessories/EPL-3PHPBEGSTA
Although if you don't have it, it's not practical to buy one just for your usb cable to work for charging.
kazuni said:
I would like to charge my SGT 7.7 with the normal USB cable it came with on my pc; however, due to its lower mA output (USB standard is 500mA). The standard adapter it came with has 2000mA (2A) output, hence it detects and charges. However, I do notice that the unit charges at 1A with my iPhone charger, perhaps just a bit slower.
Anything we can modify in the rom to enable force usb charging? there is such a way in SGT 10.1 but I can't find a method similar to it on my 7.7
Click to expand...
Click to collapse
also would like to know how to force charge via USB I have gigabyte mainboards that have special charging ports that have 3x normal power .. but still can not get them to recharge my galaxy note 2 while its being used :S
strangely my old laptop with USB Ver 1 .. recharges the phone when in use ...
using Ubuntu and unsure if its pc sided software issue or android related issue
The device will certainly charge slowly via USB, although the battery animation may not show it.
You may use other adapters etc, but I'm fairly sure they don't actually work due to kernel limitations. Changes may need to be made within the kernel (same as SGS2) to actually increase actual charging current. SGS2 was set at USB 450mA. I'm sure I've seen the mod while searching github kernel source code.
Some of the measurement apps out their are quite inaccurate, and I have only used as I guide.
You could use init.d script to set on boot, but anything larger than 450mA could be just placebo,.... unless kernel enabled....
If I'm wrong, please correct me.
Sent from my GT-I9300 using xda premium
Simple solution turn off ur tab then connect it to laptop/pc mac/imac it will charge normally
Sent from my GT-P6800 using xda premium
khanfuze said:
I just ordered this
http://www.ebay.com/itm/Micro-USB-t...-Galaxy-Tab-P1000-7500-7510-730-/170969489675
for $2.99 I hope it works. The things we go through in order to be not price gouged..
Click to expand...
Click to collapse
This is garbage. I had three of them and they all broke within a month.
This is what I use now. Built to last.
http://www.amazon.com/gp/product/B009I4HEOO/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1
Hi all, I own a Note 3, got the idea from the following link:
http://www.oneclickroot.com/how-to/how-to-quickly-charge-your-androids-battery/#readsoruce_bottom
Here's a quote from the page:
DOUBLE USB CORDS
I use a mechanical keyboard that has two USB ports. Why? The keyboard – for whatever reason – requires more power than is provided by a traditional USB port. It plugs into two USB ports simultaneously and provides additional power. Some third-party micro USB cables also feature two USB ports, in which case you can access twice the charging power from your PC
Click to expand...
Click to collapse
Has anyone tried that out? Using double usb cords?
Thanks
stormage said:
Hi all, I own a Note 3, got the idea from the following link:
http://www.oneclickroot.com/how-to/how-to-quickly-charge-your-androids-battery/#readsoruce_bottom
Here's a quote from the page:
Has anyone tried that out? Using double usb cords?
Thanks
Click to expand...
Click to collapse
I can't see it working if you are using USB 3 port as that pumps out 2A. Maybe if you were using USB 2's it could crank up the amps and make it work.
stormage said:
Hi all, I own a Note 3, got the idea from the following link:
http://www.oneclickroot.com/how-to/how-to-quickly-charge-your-androids-battery/#readsoruce_bottom
Here's a quote from the page:
Has anyone tried that out? Using double usb cords?
Thanks
Click to expand...
Click to collapse
I'd rather have it charge <500mAh to prolong battery life.
And i wouldnt use/recommend those 2USB connector cables. As it may short out you computers USB busses.
And its also very likely that with those cables (with the 2 connectors on 1 side) have just one of them connectors for power and the other just for data. So you can put the extra plug into a wallcharger.
Dont try to fast-charge lithium battery's they still dont really like it. It shortens life drasticly.
Just keep it charging overnight when asleep, the comment about having lithium battery's at 100% and being bad for the battery is not valid anymore. That was only for the 1st two generations.
Now with these 6th or 7th generation lithium battery's its not a problem.