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Hi,
I just stuck here, cause I found a thread about fast usb charging. But there is no answers or solutions.
I have many htc devices. It seems that some of them has a problem with 3rd party usb chargers.
My most used device is Universal. It suck a lot of power. THis one doesn't enable usb charging at all, until you put it in sleep mode before pluging the charger.
Anyway, the same issue for Kaiser too.
The problem is, that it doesn't matter how much current is the charger able to deliver. They just use some kind of recognition of original chargers.
What I already measured: Original charger and universal running => takes 1200mA. 3rd party charger or my 5A PSU => Universal/Kaiser sucks just 500mA.
This is fast/slow charge. I found here discussion about 4 and 5 pins shorted??
But WTF which 4 & 5 pin?
http://www.tracyandmatt.co.uk/blogs/index.php/2006/09/10/htc_hermes_usb_connector_pin_config
According to this pinout. It would be 2 GND of Audio side? I'm not sure that original charger use extUSB audio side to charge...? It also could be D & A pins, but I'm afraid to connect 5V to Data- pin.
Anyway, someone here have to know it.
If not, in a few days I'll try all possible combinations and post the results.
Thanks
Shef
I'd also be interested to know about this. When I charge my TYTN II via USB, it takes much longer to charge than if I charge it via the mains charger (I prefer USB since I travel a lot and it's one less charger I need to carry around).
Better still, is it possible to buy a USB cable that will charge at the same rate as the mains charger rather than messing with a USB cable with the associated risks?
Best,
Gary.
Shef said:
Hi,
What I already measured: Original charger and universal running => takes 1200mA. 3rd party charger or my 5A PSU => Universal/Kaiser sucks just 500mA.
This is fast/slow charge. I found here discussion about 4 and 5 pins shorted??
But WTF which 4 & 5 pin?
http://www.tracyandmatt.co.uk/blogs/index.php/2006/09/10/htc_hermes_usb_connector_pin_config
Click to expand...
Click to collapse
a usb port only supplies 500ma, while the wall charger does 1200ma as the OP has measured (although it says 1A at the back of the charger). changing a cable is not gonna superpower up your usb port.
unless maybe you get hold of a forked USB cable, like the one that Seagate Free Agent drives come supplied with... you know, 1 mini USB splitting halfway down to two normal USB plugs.
Worth experimenting with, do you think?
wyrm said:
unless maybe you get hold of a forked USB cable, like the one that Seagate Free Agent drives come supplied with... you know, 1 mini USB splitting halfway down to two normal USB plugs.
Worth experimenting with, do you think?
Click to expand...
Click to collapse
good call.......with a little googling i came up with this
http://www.universaluk.com/acatalog...2_x_Type_A_to_mini_B__USB_2_0__1m__Lindy.html
tried ebay, my brief search came up with lots of unrelated results, so i gave up
I got one of those leads, came with my portable 2.5" hard drive. Just tried the lead on my Tytn 2 and it does charge almost as fast as the mains plug
Success
Ok, so, I tried to experiment.
Here you go.
Usb simple cable 480ma charge.
The same result with Motorola charger.
Motorola charger pins A and B short circuit - 890mA.
That's much better, althrough I suppose it can suck more current then 890mA, but it's significantly better.
THere is also pins data+ and data- short circuited (I don't know if it has effect, but I can't disconnect it in this connector).
Apparently NC (not connected) pin on our pinout schematics definitely is connected.
With % of charged battery it suck less and less current....I suppose it's usual, this should be even driven by ROM.
So, update your cables
It works even with car charger, so no more charger problems...
Shef
Just to be clear - you took a Motorola USB cable and shorted pins A and B (which are which by the way?) and it provides a decent current....
How do you short the pins? I've looked in the end of cable and I can hardly see the pins, let alone short them! What's the trick here or have I missed something?
Thanks,
Gary.
Shef said:
Ok, so, I tried to experiment.
Here you go.
Usb simple cable 480ma charge.
The same result with Motorola charger.
Motorola charger pins A and B short circuit - 890mA.
That's much better, althrough I suppose it can suck more current then 890mA, but it's significantly better.
THere is also pins data+ and data- short circuited (I don't know if it has effect, but I can't disconnect it in this connector).
Apparently NC (not connected) pin on our pinout schematics definitely is connected.
With % of charged battery it suck less and less current....I suppose it's usual, this should be even driven by ROM.
So, update your cables
It works even with car charger, so no more charger problems...
Shef
Click to expand...
Click to collapse
Also interested in how to short the pins. I use Navizon, bluetooth HSDPA tethering, and iGuidance while on the ambulance and even my iGo 3A max rated charger can barely keep up because the tilt wont accept all of the available current.
So have anyone found a way to fast charge our ppc through usb??
Yes, that is correct. Short pins 4 & 5 (4 is normally NC) to enable fast-charging. If you do it correctly, the phone shouldn't pick up tethering, and therefore should not say "PC Connected" or the like..
The TracyAndMatt pinout is wrongly numbered. The pin assignments are correct, but the number/letter scheme they used is incorrect. True ExtUSB pinout translation to their pinout is as follows:
T & M Real ExtUSB
-------------------------------
Pins E D C B A = 1 2 3 4 5
Pins 1 2 3 4 5 6 = 6 7 8 9 10 11
The way I remember is that the corner opposite the angled one is where pin 1 starts (where E is on the T&M pinout) - and they go like most IEC-standard connectors, in a clock-like circular numbering scheme.
Here's a better pinout: http://pinouts.ru/PDA/htc_extUSB_pinout.shtml
Hope this helps!
--W5i2
its the milliamps that is the problem even doubling up with a y splitter does not do much Find a charger with the most milliamps for a faster charge 1.2 amps works best and as far as i know no usb port puts out that much even if they are wired in a series. Many try to sell lower amp chargers they dont even know about it at att. if the screen is off they will charge but not well these phones are energy hogs. I must have at least twenty chargers and messed around with them... the original or one of highest amperage works for me.
Check winhlp.com/node/855 for the answer.
htc_battery_trout.c said:
/* A9 reports USB charging when helf AC cable in and China AC charger. */
/* Work arround: notify userspace AC charging first,
and notify USB charging again when receiving usb connected notificaiton from usb driver. *
Click to expand...
Click to collapse
I find this annoying. I can't tell if my wall charger is fast charging or not because the G1 always says "AC"
hgmichna said:
Check winhlp.com/node/855 for the answer.
Click to expand...
Click to collapse
That is not going to help HTC owners.
HTC charging cable
kiss_se said:
That is not going to help HTC owners.
Click to expand...
Click to collapse
http://winhlp.com/node/855 was explicitly written for HTC smartphone owners.
hgmichna said:
[...] was explicitly written for HTC smartphone owners.
Click to expand...
Click to collapse
Sorry, I meant to say: That is not going to help extusb owners.
hgmichna said:
Check winhlp.com/node/855 for the answer.
Click to expand...
Click to collapse
Is it possible to get one of the 'fast charge' enabled USB cables on eBay or elsewhere? I am not keen on doing the mod described.
What is the maximum mAh recommended for HTC devices? Is it still 1.2 A or more?
zurpher said:
Is it possible to get one of the 'fast charge' enabled USB cables on eBay or elsewhere? I am not keen on doing the mod described.
Click to expand...
Click to collapse
Check http://winhlp.com/node/855#qaes for the only buyable solution I know, besides compatible chargers. Your best bet is probably the original HTC charger, available for roughly $10.
zurpher said:
What is the maximum mAh recommended for HTC devices? Is it still 1.2 A or more?
Click to expand...
Click to collapse
There can be no recommended maximum mAh. There can only be a required current, which differs from device to device. Check Ohm's Law. The device determines how much current it draws. If the charger cannot deliver that current, then the charging process can fail in various ways, all undesirable.
hgmichna said:
Check http://winhlp.com/node/855#qaes for the only buyable solution I know, besides compatible chargers. Your best bet is probably the original HTC charger, available for roughly $10.
There can be no recommended maximum mAh. There can only be a required current, which differs from device to device. Check Ohm's Law. The device determines how much current it draws. If the charger cannot deliver that current, then the charging process can fail in various ways, all undesirable.
Click to expand...
Click to collapse
Could the USB Switching 2A Power Charger Adapter Convertor Plug be similar in function to the one that you've linked?
zurpher said:
Could the USB Switching 2A Power Charger Adapter Convertor Plug be similar in function to the one that you've linked?
Click to expand...
Click to collapse
I don't know, but probably not. Apple used to use a different signalling scheme involving resistors.
I haven't seen a thread that addresses this specifically:
After reading the threads in this section, it seems that the consensus is that the "fast charging" aspect of the NC is based on extra pins in the special NC cable. When connected to any charger with 1.9amps or greater, you will get the fast charge.
My experience is different.
Using the OEM NC cable:
1. Connected to OEM charger, stock ROM - settings say charging, flashes an icon with charging percent on connection and removal
2. Connected to OEM charger, CM7 - settings say Charging (AC).
3. Connected to 2.1 and 2.0 amp chargers, stock - settings say Not Charging.
4. Connected to 2.1 and 2.0 amp chargers, CM7 - settings say Charging (USB)
Using the generic microusb cables (2 or 3 tried):
1. Connected to OEM charger, stock ROM - Can't remember, but not going back to stock!
2. Connected to OEM charger, CM7 - settings say Charging (AC).
3. Connected to 2.1 and 2.0 amp chargers, stock - settings say Not Charging.
4. Connected to 2.1 and 2.0 amp chargers, CM7 - settings say Charging (USB)
This seems to imply that the OEM charger is required to really use the extra pins in the NC OEM cable. Can anyone test and confirm this?
Alan
The nook charger puts out almost 2A of power, where normal usb chargers and ports on computer only put out 500mA. The cable that the nook comes with has some terminations in it that allow the nook to tell when it is connected to the nook charger. It will charge at a much faster rate when using the combination of the charger and cable that came with the nook. Replace either the cable or the charger with anything else and you get low power charging mode which is very slow.
Nook Charger
I keep seeing reports of people getting a fast charge using various other equipment, as long as the chargers are rated >= 1.9A.
Can anyone confirm or deny this? Any testing?
As long as a charger puts out near 2A of current, it should work. The charger itself is just a four pin USB charger. The cable itself... lots of pins in the connector to the NC.
FrayAdjacent said:
As long as a charger puts out near 2A of current, it should work. The charger itself is just a four pin USB charger. The cable itself... lots of pins in the connector to the NC.
Click to expand...
Click to collapse
That's what everyone's been saying, but it doesn't work that way in my testing. I have tried 3rd party chargers that output 2.0 and 2.1A, using the OEM cable. None of them are recognized as an AC charger. If we knew how the NC knows when it's connected to the original charger, we could find a way to modify something available at WalMart to quick charge our NC's. There's plenty of Ipad chargers (2.1A) available. The one I have doesn't work, though.
Alan
Update to my previous post:
When I got home from work I tested my ipad charger (2.1A) with the nook color cable and it seemed to act like the nook charger. I did not think any charger but the nc one would work, but it seems it does.
I am jealous. My Ipad charger (OEM) paired with the nook cable shows Charging (USB) under Settings --->About Tablet--->Status. I would love know how to get it to say Charging (AC) .
Alan
Keep your eyes open people...as soon as I return to work and have extra cash I plan on ordering and tearing down a charger and cable. Many have noticed poor quality in the chargers..I'm gonna try to engineer an open DIY charger and cable replacement with better filtering components. Hopefully will be creating a thread with full details in 3 weeks...
Sent from my NookColor using Tapatalk
deadbot1 said:
Keep your eyes open people...as soon as I return to work and have extra cash I plan on ordering and tearing down a charger and cable. Many have noticed poor quality in the chargers..I'm gonna try to engineer an open DIY charger and cable replacement with better filtering components. Hopefully will be creating a thread with full details in 3 weeks...
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
YAY! I have my soldering station warming up.
Cheers,
kev
yep, this is overdue...plugged in last night...almost burned my hand after an hour of charging. I keep my charger by the bed and the hum is just annoying when I'm feeling a bit restless.
Is there a way to identify problem chargers?
There must be some real inconsistency in the charger build quality. I've never noticed mine gets more than just a tiny bit warm and no humming. I wonder if there was a bad lot of them made? I was trying to look at the charger to see if there is a lot # or such, but can't tell what half the darned thing says. I'm posting a pic of the text on my charger in the hopes we can figure out if there is some way to identify problem chargers.
Edit: My nc came from WalMart.
Well there is a difference in the markings at least...The area circled in red...On mine it is R1101.
Still made in China
Edit: BTW my unit came from Walmart. Not sure if there would be any accounting for things like that.
deadbot1 said:
Keep your eyes open people...as soon as I return to work and have extra cash I plan on ordering and tearing down a charger and cable. Many have noticed poor quality in the chargers..I'm gonna try to engineer an open DIY charger and cable replacement with better filtering components. Hopefully will be creating a thread with full details in 3 weeks...
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
Sounds great. The simple tests I have done have yielded more quetions then answers.
Looking forward to your data.
ive noticed i cant transfer data on anything other than the nook cable.
The NC cable is special. It wont fit other devices.
described over here....
http://en.wikipedia.org/wiki/Nook_Color
Charging the NC on a regular microUSB means much longer time.
swaaye said:
The NC cable is special. It wont fit other devices.
described over here....
http://en.wikipedia.org/wiki/Nook_Color
Charging the NC on a regular microUSB means much longer time.
Click to expand...
Click to collapse
Yeah, this much is well known...my plan is to find out if there are "brains" in the charger or if it's just a high amp USB adapter. If the latter is true( which I suspect), then it's easy peasy to make a high power port( or just buy a quality one). If it has special circuitry...then I get to try and replicate it( with better parts) and release the plans so others can make DIY replacements.
Edit: I'm willing to bet that the extra pins in the cable are just to increase contact surface...to handle the higher amperage.
Sent from my NookColor using XDA Premium App
boogerboy72 said:
ive noticed i cant transfer data on anything other than the nook cable.
Click to expand...
Click to collapse
That is totally wrong, since other cables WILL transfer data just fine. I use an LG Micro USB cable from my old dare, and am able to ADB push, install, etc just fine.
As it is, the large end of the Nook's USB cable is normal; this means that if the nook is communicating, it is doing so over the standard USB data ports, and not through some special connection. Keep in mind that some of the extra pins from the micro side are for the status light that is built in.
Hmm R1102 here showing 1.9A output
I'm curious.. some people have talked about warranty replacements. What R versions are those?
Divine_Madcat said:
That is totally wrong, since other cables WILL transfer data just fine. I use an LG Micro USB cable from my old dare, and am able to ADB push, install, etc just fine.
As it is, the large end of the Nook's USB cable is normal; this means that if the nook is communicating, it is doing so over the standard USB data ports, and not through some special connection. Keep in mind that some of the extra pins from the micro side are for the status light that is built in.
Click to expand...
Click to collapse
Hmm....hadn't thought of that...that charger almost has to be dumb...just higher output...the smarts all have to be in the USB/power management chip in the nook. Those extra pins must be for the led and maybe a few for handling the higher amperage. Need to check out the spec sheet for that chip again...
Sent from my NookColor using XDA Premium App
Why does it HAVE to be dumb? I mean, the charger needs to do nothing more than respond to a ping, saying "Hey, im a Nook charger, take me for a 1.9A ride!". I guess that makes it dumb, but no reason said technology won't be in the charger.
I got an aftermarket charger in my area since original ones were not available. It says on the label though it's for Galaxy Tab but the max amp is 2100mA min 150mA and the usual 5volts. Is it safe to use even if the original one says 2000A?
Sent from my GT-P1000 using XDA Premium App
Anyone?
Sent from my GT-P1000 using XDA Premium App
charger
Yes,where did u get it,I need one
Just some cell phone shop in my area. My original question was I was asking if it's safe to use even if it has higher amps.
Sent from my GT-P1000 using XDA Premium App
technically, its ok to charge at a higher amperage, it would just entail that you would be able to charge it faster.
but there might be a risk of overheating the battery during charging and that might lead to problems in the long run.
on the other hand, 100mA wouldn't be much of a difference.
It will be perfectly fine. The units charging circuitry will only use as much current it requires, heck you could charge it from a 10Amp 5volt supply with no troubles. I have used in the past an old pc power supply rigged up to some usb sockets to charge various usb devices without any trouble. They are capable of supplying upwards of 20amp @ 5volt.
Btw, i am a qualified electronics technician of 12years experience, i have experimented a LOT.
@baskarz thanks for clearing everything up baskarz.
@prinzhernan could you post a pic of what the charger looks like? thanks
baskarz said:
It will be perfectly fine. The units charging circuitry will only use as much current it requires, heck you could charge it from a 10Amp 5volt supply with no troubles. I have used in the past an old pc power supply rigged up to some usb sockets to charge various usb devices without any trouble. They are capable of supplying upwards of 20amp @ 5volt.
Btw, i am a qualified electronics technician of 12years experience, i have experimented a LOT.
Click to expand...
Click to collapse
Thanks a lot you two for taking time to explain. I understand it all now.
Will post a pic when I get home.
Sent from my GT-P1000 using XDA Premium App
Sharing link to aftermarket charger
Hi guys
Share my aftermarket charger with you all
http://www.wsdeal.com/ID321W/YXT023_US_2_in_1_Micro_Home_USB_Charger_with_Charge_Syne_Cable_for_Apple_iPadiPhone_4G3GS_White.ws
Takes 4 hours to charge from 10% to 100%.
Shows "CHARGING" word
Below 2A charger does NOT work on SGT, shows "NOT CHARGING"
http://www.mobilefun.co.uk/powerhub-4-port-usb-charger-p19416.htm
http://www.chinavold.com/dual-usb-p...e-ipod-eu-plug-with-charging-cable-p-196.html
Although both says 2000mA, but does NOT work on SGT, I was lucky the retailer let me trial-run at home.
Results = takes 10 hours to charge from 10% to 100% same like notebook or desktop USB with software upgraded (USB fast charging from ASRock) tested on ASRock mobo and Thinkpas T60.
Make sure to buy only when box PRINTS for GALAXY Tab !!!
cx5 said:
Hi guys
Share my aftermarket charger with you all
http://www.wsdeal.com/ID321W/YXT023_US_2_in_1_Micro_Home_USB_Charger_with_Charge_Syne_Cable_for_Apple_iPadiPhone_4G3GS_White.ws
Takes 4 hours to charge from 10% to 100%.
Shows "CHARGING" word
Below 2A charger does NOT work on SGT, shows "NOT CHARGING"
http://www.mobilefun.co.uk/powerhub-4-port-usb-charger-p19416.htm
http://www.chinavold.com/dual-usb-p...e-ipod-eu-plug-with-charging-cable-p-196.html
Although both says 2000mA, but does NOT work on SGT, I was lucky the retailer let me trial-run at home.
Results = takes 10 hours to charge from 10% to 100% same like notebook or desktop USB with software upgraded (USB fast charging from ASRock) tested on ASRock mobo and Thinkpas T60.
Make sure to buy only when box PRINTS for GALAXY Tab !!!
Click to expand...
Click to collapse
2A chargers will work with the SGT, but you need an adapter like these that I bought.
http://cgi.ebay.com/USB-car-wall-ch...ccessories&hash=item2c5c07736b#ht_3085wt_1163
Reason is the ones that says "For Galaxy Tab" chargers have resistors soldered to the usb port allowing the SGT to know it's connected to an AC adapter and to pull the full amount of power it needs. The adapters have the resistors in them allowing u to use any cheap charger. It allows you to charge with a standard computer/laptop usb port as well. I think it's supposed to charge faster than the trickle charge you get without the adapter but I have yet to try it out. There's another thread that goes into way more detail about it and even how to solder your own resisters to make your own adapters. Think it was this one: http://forum.xda-developers.com/showthread.php?t=845844&highlight=usb+charge
you can charge anywhere were there is a USB port. Just make this.
http://forum.xda-developers.com/showthread.php?t=845844&page=3
that tells your galaxy tab to DRAW POWER from the USB port thinking it is the supplied CHARGER. you can use ANY USB port or charger with this.
Ricey said:
Reason is the ones that says "For Galaxy Tab" chargers have resistors soldered to the usb port allowing the SGT to know it's connected to an AC adapter and to pull the full amount of power it needs.
Click to expand...
Click to collapse
Hi Ricey
Correcto, my post can help anyone who wants a 2nd charger to be permanent in office or etc
And most importantly not buy the regular 2A without the resistors inside.
Awesome. Sounds great.
EDIT - Post #6 has a quote from Kensington confirming the charger does not work with the Nexus Tablet
So been trying to get a dual-USB 2.1A charger to use with my Nexus 7 and my old desire-Z phone (I also have a 1st gen iPad so figured would be a nice perk for both ports to deliver that juice).
I even went as far as buying a new USB Cable thinking something was wrong with my cable and flashing a couple of different kernels (thinking it was maybe that).
Fact is whenever I plug my N7 into a Kensington AbsolutePower 4.2 w/ PowerWhiz (K39690AM), Battery Monitor Pro widget will say in green "AC Plugged", "Discharging", and if it does show "Charging", it's only drawing in around 130mA or so. But yet on my Desire-Z (G2) I plug that in, it'll show maybe around 500mA (it won't go over 1A because it's designed not to for smart phones).
However If I plug the N7 into a Samsung 2.1A charger that came with a Galaxy Tab 2 7.0, The N7 will show a power draw from the charger a little above 1,800mA (and then goes down to around 500 or less once it hits 99%), similar situation with the samsung charger + my G2.
So I'm constantly googling trying to figure out whats up, and the only thing I've come across are various reviews on Amazon (they list this as a Dual 2.1A USB charger), with some complaints saying they don't work with Asus Tablets and another saying it wouldn't charge much at all on his Nexus 10.
So I'm wondering... what's up with that, and why does it not say it's not compatible on the box (though guess they sort of did by excluding Asus and Google from the list of brands on the side).
Its charging. Just the os is not showing it properly
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
madman604 said:
Its charging. Just the os is not showing it properly
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
Click to expand...
Click to collapse
As I said, I'm using Battery Widget Monitor Pro. IF it was only the OS it would show the exact same deal with the Samsung 2.1A Charger, Nook 1A charger, HTC 1A charger. But instead on ALL chargers except the Kensington one, it shows a much higher charge rate (on the 1A around 800mA charge, on the Samsung around 1.7A charge).
But on the Kensington one never more than 500mA (usually around 300-400). I even exchanged the unit for a new one, and still the exact same behavior. I think the powerWhiz feature of the charger is detecting it not as a tablet but rather as a generic USB Device and is not providing more than 500mA for 'safe' charging. Just like how it won't charge my phone past 1A since it's detected as a SmartPhone even though it's a 2.1A port.
kbeezie said:
As I said, I'm using Battery Widget Monitor Pro. IF it was only the OS it would show the exact same deal with the Samsung 2.1A Charger, Nook 1A charger, HTC 1A charger. But instead on ALL chargers except the Kensington one, it shows a much higher charge rate (on the 1A around 800mA charge, on the Samsung around 1.7A charge).
But on the Kensington one never more than 500mA (usually around 300-400). I even exchanged the unit for a new one, and still the exact same behavior. I think the powerWhiz feature of the charger is detecting it not as a tablet but rather as a generic USB Device and is not providing more than 500mA for 'safe' charging. Just like how it won't charge my phone past 1A since it's detected as a SmartPhone even though it's a 2.1A port.
Click to expand...
Click to collapse
The N7 has a circuit to detect whether the USB cable is plugged into its charger or into a regular USB port. The N7's charger shorts the two data pins. If your charger doesn't short those two pins, the N7 will never go into "high charge" mode.
There is a simple mod to do. Either take the charger apart and short what the data pins should be on the usb port or short the data wires together in a cheapo usb cable at the micro usb side. That will make a charge only cable but it will give. What you need.
Sent from my SPH-D710 using xda premium
So turns out I wasn't crazy after testing two of their chargers.
Dear Karl:
Thank you for contacting Kensington Technical Support.
We understand that our Absolute Power™ 4.2 Dual Fast Charge is not charging your Nexus tablet properly, we regret to inform you that Absolute Power™ 4.2 Dual Fast Charge for Tablets is not compatible with Nexus Tablet, hence we would be glad to refund you the amount.
If the date of purchase is within 90 days, we request you to utilize the 90-days Money Back Guarantee policy.
Please click on the following link to know about the 90-days Money Back Guarantee form
http://www.kensington.com/kensington/us/us/s/1570/90-day-money-back-guarantee.aspx
We are sorry for the inconvenience caused.
If you need further assistance, please feel free to reply to this message.
For any further assistance please feel free to reply back to this email or you may want to call us on our toll-free number 1800-535-4242, Mon Fri 07:30 am to 04:30 pm PST.
Please Read This!
Kensington Technical Support incidents are only processed via our support web site, not via email. Please do NOT reply to this email, but rather you must click on the link below which will bring you to the Kensington Technical Support web portal where you can initiate questions, modify your active incidents, or perform maintenance on your support account.
Again, please do NOT respond to this incident via email, please click on the link below to access your support incident. Thank you.
http://www.kensington.com/kensington/us/us/s/1708/mystuff.aspx
Kensington Computer Products Group
Regards,
Shiva Kumar
Click to expand...
Click to collapse
graydiggy said:
There is a simple mod to do. Either take the charger apart and short what the data pins should be on the usb port or short the data wires together in a cheapo usb cable at the micro usb side. That will make a charge only cable but it will give. What you need.
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Yea... I'm not taking apart a charger. I just returned the second one to the store where I got it and got one that did work. Also that method won't work with the kensington, with it's powerwhiz feature if it can't detect the device it'll limit to 500mA for safety.
Besides I've already returned the second charger (I exchanged the first one, re-ran tests, etc), and ended up getting an RCA 4-outlet power strip/surge protector that has two USB ports (one for 2.1A charging) that does work.
All android devices look for 200ohms on the data pins to determine if it is a charge vs data source. Except the handful of proprietary connections (ex:Nook Color).
Yep. All things said in this thread are true. What I've found to work great with the stuff I already have is a Samsung Galaxy S4 charger. That thing
charges the N7 at about 1500 mA. Measured with my multimeter. It's weird though,
it'll start around 800mA and after about 45s to a minute it will start pulling in almost double that.
Crazy.
Hello,
First time poster long time reader.
I have read 20 billion forums where people continually say that "everything charges a touchpad" and "nothing charges a touchpad but original charger"
we are 5 years after launch and crash. Judging by forum activity people still have and use their touchpads.
what charges a HP touchpad? Do you need a special cable? Do you need a special charger? can some one after all this time give the definitive answer?
I have read through many posts on this forum and multiple others and it seems this question has not be clearly answered.
im looking for a "only a hp charger" or "500v and 90a will do it" or "connect nipples to car battery and furiously tongue the charging port".
to understand why I am asking this question. I dont have my original charger and i dont want to pay $40 for an american charger ( I dont live in America) I use a 5v 2.1a phone charger and it gives me the "to reliably charge" screen.
YesApples said:
Hello,
First time poster long time reader.
I have read 20 billion forums where people continually say that "everything charges a touchpad" and "nothing charges a touchpad but original charger"
we are 5 years after launch and crash. Judging by forum activity people still have and use their touchpads.
what charges a HP touchpad? Do you need a special cable? Do you need a special charger? can some one after all this time give the definitive answer?
I have read through many posts on this forum and multiple others and it seems this question has not be clearly answered.
im looking for a "only a hp charger" or "500v and 90a will do it" or "connect nipples to car battery and furiously tongue the charging port".
to understand why I am asking this question. I dont have my original charger and i dont want to pay $40 for an american charger ( I dont live in America) I use a 5v 2.1a phone charger and it gives me the "to reliably charge" screen.
Click to expand...
Click to collapse
Some are more picky than others, but I charge mine with any 5v, 2a charger. Time to fully charge varies, and if you use it while charging, it will not store much in the battery. Put it to sleep and let it charge until full.
So its more picky,
I am currently using a Belkin wallcharger that outputs 12w 2.4A. I have left my tablet plugged in and off for the last 24 hours and it wont turn on other then to tell me that to reliably charge I need the original charger. I have KK 4.4.4. Is this a typical charge time for these in other users experiances? how do we get it to charge with out an original cable or wallcharger?
I too would like to get to the bottom of this. I use the original charger and cable and from a dead battery takes a goot 15hrs before it boots up. The only indication its charging is the home button LED that flashed back and forth. I've tried 3rd party chargers and none work. I've tried 3rd party cables and none work.
theraque said:
I too would like to get to the bottom of this. I use the original charger and cable and from a dead battery takes a goot 15hrs before it boots up. The only indication its charging is the home button LED that flashed back and forth. I've tried 3rd party chargers and none work. I've tried 3rd party cables and none work.
Click to expand...
Click to collapse
It is a well-known fact that allowing the battery to fully discharge is problematic at best, disastrous at worst. None of the chargers are reliable when this occurs. The simple answer is don't let the battery go below about 10% before recharging, or you may not recover your tablet without having to debrick it.
This has been my experience:
Any old charger and cable will charge a Touchpad so long as the battery isn't completely dead. If the battery is completely dead, then there is a way to get enough power to turn it on without needing the original charger or cable. You simply plug it into the USB port of any computer and let it sit. Let it sit for a long time. I let mine sit for a day before trying to power it back on.
YMMV, but I've had success with that method.
YesApples said:
Hello,
First time poster long time reader.
I have read 20 billion forums where people continually say that "everything charges a touchpad" and "nothing charges a touchpad but original charger"
we are 5 years after launch and crash. Judging by forum activity people still have and use their touchpads.
what charges a HP touchpad? Do you need a special cable? Do you need a special charger? can some one after all this time give the definitive answer?
I have read through many posts on this forum and multiple others and it seems this question has not be clearly answered.
im looking for a "only a hp charger" or "500v and 90a will do it" or "connect nipples to car battery and furiously tongue the charging port".
to understand why I am asking this question. I dont have my original charger and i dont want to pay $40 for an american charger ( I dont live in America) I use a 5v 2.1a phone charger and it gives me the "to reliably charge" screen.
Click to expand...
Click to collapse
You are right about the many discussions about what chargers work with the TouchPad and which ones don't. I have sat in on many of them as well as done some testing of my own. The rule of thumb is it is best to use the official HP TouchPad charger. HP for some reason made the charging circuits proprietary on the TouchPad so that if you use a third party charger rated the same as the official one, it will charge but only at the lowest rate of 500mA. You can also charge the TP from a PC usb port, but again it is rated at 500mA. The catch is the TP uses more than 500mA when awake, so to use one of these methods, the TP has to be put to sleep or be turned off and will charge very slowly. That being said, you may find a third party charger that will charge the TP at the higher rate, but they are rare. At one time I was aware of a user who was modifying USB cords so that you could use a third party charger. He used to have a thread on RootzWiki forum, but that that forum was pretty much destroyed by spammers and his thread was lost. He had instructions with pictures and parts lists. Also, keep in mind, any good USB cable will work with the original HP charger. It's the modification that he was making to the cable that tricked the TP into thinking it is connected to a real HP charger.
However, I did find this post from a fellow that knows the mod one needs to make to get a third party charger to work with a TP:
https://forum.xda-developers.com/showpost.php?p=22990010&postcount=16
NT
PS. Here is a link to the entire thread if you want to read the whole thing, 4 pages: https://forum.xda-developers.com/showthread.php?t=1475537
nevertells2 said:
You are right about the many discussions about what chargers work with the TouchPad and which ones don't. I have sat in on many of them as well as done some testing of my own. The rule of thumb is it is best to use the official HP TouchPad charger. HP for some reason made the charging circuits proprietary on the TouchPad so that if you use a third party charger rated the same as the official one, it will charge but only at the lowest rate of 500mA. You can also charge the TP from a PC usb port, but again it is rated at 500mA. The catch is the TP uses more than 500mA when awake, so to use one of these methods, the TP has to be put to sleep or be turned off and will charge very slowly. That being said, you may find a third party charger that will charge the TP at the higher rate, but they are rare. At one time I was aware of a user who was modifying USB cords so that you could use a third party charger. He used to have a thread on RootzWiki forum, but that that forum was pretty much destroyed by spammers and his thread was lost. He had instructions with pictures and parts lists. Also, keep in mind, any good USB cable will work with the original HP charger. It's the modification that he was making to the cable that tricked the TP into thinking it is connected to a real HP charger.
However, I did find this post from a fellow that knows the mod one needs to make to get a third party charger to work with a TP:
https://forum.xda-developers.com/showpost.php?p=22990010&postcount=16
NT
PS. Here is a link to the entire thread if you want to read the whole thing, 4 pages: https://forum.xda-developers.com/showthread.php?t=1475537
Click to expand...
Click to collapse
I have confirmed all that you have said and now know this to be the definitive answer, since OP I have purchased 12 chargers advertising different automatic charge regulation features such as belkin "smart" chargers, none would charge over 500ma which of course as we now know is not sufficient to use the TP and takes days to charge, not what i would call functional.
I made a messy hack job charger.. im definitively not great at that and between an accident prone wife and 2 small children, my end result wasnt good enough to let charge alone next to the couch or something.
Finally, while i did all this I had a HP charger on order with an American wall plug ( i live in western Australia so different plug and long postage time) this charger works as expected and in my research was the only functional way to charge the TP
THANKS TEAM. we got there in the end.
YesApples said:
I have confirmed all that you have said and now know this to be the definitive answer, since OP I have purchased 12 chargers advertising different automatic charge regulation features such as belkin "smart" chargers, none would charge over 500ma which of course as we now know is not sufficient to use the TP and takes days to charge, not what i would call functional.
I made a messy hack job charger.. im definitively not great at that and between an accident prone wife and 2 small children, my end result wasnt good enough to let charge alone next to the couch or something.
Finally, while i did all this I had a HP charger on order with an American wall plug ( i live in western Australia so different plug and long postage time) this charger works as expected and in my research was the only functional way to charge the TP
THANKS TEAM. we got there in the end.
Click to expand...
Click to collapse
12 chargers! Holy Cow!!!! :laugh: I do remember that the guy who was building these cables purchased a USB connector and used surface mount resistors what he could fit inside the metal shell of the connector.
NT
Definitive answer... maybe...? 5.3+ volts and 2.0+ amps...?
YesApples said:
can some one after all this time give the definitive answer?
Click to expand...
Click to collapse
In seeking the same answer as you I seem to have stumbled upon a couple options that explain the answer...
Here I wanted to post a "Screenshot of HP forum answer regarding HP Tablet charger reqs" but the forum bots won't allow it...
So the screenshot the i wanted to include above will not post properly, i'll explain... the screenshot showed a h30434.www3.hp com/t5/Tablets-and-Mobile-Devices-Archive-Read-Only/Need-a-charger-for-my-HP-10-2101-Tablet/td-p/5962461" post on the HP support forum of someone asking basically the same question... specifically about the HP 10 2101 Tablet... forum user "Wyrenut" (has over 16,000 posts on the HP support forum) states confidently;
You can find one at pretty much any computer/electronics store, or online at amazon comIt just needs to be rated for a tablet - providing at least 2.0 amps of DC current and at least 5.3 volts, and a micro-USB port on the tablet end."
This seems to check out thus far in this quest for tablet power because I was able to find in my adapter bin a 5.1 volts DC @ 2.4 amp charger with a micro-USB end and after hours of being plugged in, and that has failed to charge an HP TouchPad 32GB I recently acquired without a charger. So I am currently seeking an adapter that will satisfy "Wyrenut's" stated requirements for an HP Tablet charger and once I get my hands on one, we will have the definitive answer and I will followup on this thread as well.
Useful infos to include in the definitive answer...?
www makeuseof com/tag/hp-touchpad-probably-not-bricked/" HP TouchPad Not Charging? Don’t Worry, It’s Probably Not Bricked!
HUGE thead...
forums.webosnation com/hp-touchpad/311591-hp-touchpad-won-t-turn-charge-5.html" HP TouchPad won't turn on or charge
Along discussion regarding TouchPad charging problems though I don't think it resolves anything.. it's lot of opine... a lot...
forums.webosnation com/hp-touchpad/311491-how-i-revived-my-dead-touchpad-6.html"How I revived my dead TouchPad
and another...
forums.webosnation com/hp-touchpad/296106-touchpad-won-t-charge.html" Touchpad won't charge?
I'll try to remember to follow up on this when I finally find a charger that is 5.3+ volts and 2.0+ amps to report my findings...
Good luck...
You Must Be of my Ilk!
I like posting to moldy old Touchpad Threads too!
Would love to see what you find out if they actually go to 2 AMPS although I have 8 actual TP chargers and 6 docks.....the chargers have been known to fail after a time.
Lip Lip Lip
[email protected] said:
You Must Be of my Ilk!
I like posting to moldy old Touchpad Threads too!
Would love to see what you find out if they actually go to 2 AMPS although I have 8 actual TP chargers and 6 docks.....the chargers have been known to fail after a time.
Lip Lip Lip
Click to expand...
Click to collapse
Do you know where I could obtain a TouchPad original charger? What charger exactly am I looking for? (I have never seen a real TP charger IRL)
Maybe you have some tips for what keywords I should search for on eBay?
Sanras said:
Do you know where I could obtain a TouchPad original charger? What charger exactly am I looking for? (I have never seen a real TP charger IRL)
Maybe you have some tips for what keywords I should search for on eBay?
Click to expand...
Click to collapse
https://www.amazon.com/North-Americ...prefix=hp+touchpad+usb+charger,aps,136&sr=8-3
Wireless charger:
https://www.ebay.com/itm/154667142566?epid=1234774932&hash=item2402e14da6:g:yzsAAOSw64Jhb6y5
https://www.ebay.com/itm/304026565204?epid=1234774932&hash=item46c9653a54:g:FiYAAOSwP4RgwFqE
https://www.ebay.com/itm/194688668828?epid=1234774932&hash=item2d5459549c:g:cR0AAOSwv2phhf6x
HP_TOUCHPAD said:
https://www.amazon.com/North-American-Power-Charger-TouchPad/dp/B0055QYJJM/ref=sr_1_3?crid=48DGI4WUGP7Z&keywords=hp+touchpad+usb+charger&qid=1641357732&sprefix=hp+touchpad+usb+charger,aps,136&sr=8-3
Wireless charger:
https://www.ebay.com/itm/154667142566?epid=1234774932&hash=item2402e14da6:g:yzsAAOSw64Jhb6y5
https://www.ebay.com/itm/304026565204?epid=1234774932&hash=item46c9653a54:g:FiYAAOSwP4RgwFqE
https://www.ebay.com/itm/194688668828?epid=1234774932&hash=item2d5459549c:g:cR0AAOSwv2phhf6x
Click to expand...
Click to collapse
Yeah, I found the Touchstone charger as well. I think that's probably the best choice, because not only is it pretty cheap and gets me a stand, but it also comes with the original barrel charger required for the proprietary HP charging circuit to use the full 2 Amps. (So I assume I could then use that barrel charger with a micro usb cable as a wired charger if I didn't want to use the wireless stand)
Still, I'm impressed a 2011 device has wireless charging. If I do buy that Touchstone, I'll probably just use the wireless charging for convenience.
Anyway, I first need to get this thing to boot. I have the (seemingly) common dead battery issue. I received this tablet from a friend for free, he said it was barely ever used and then put away in storage. The tablet is in like-new condition, so I believe him on that.
I've plugged it into a 5V 2A (10W) USB charger from a Moto G Pure, and it's currently alternating between two lights on the home button. (And has been doing so for the last 8 hours or so). I'll leave it overnight as well.
At that point, I assume I should start trying power vol and home button combos to try to turn it on? Do you have any suggestions on what I should do to get this tablet to boot?
Once I can get it to turn on, I'll probably look into getting the original charger (that Touchstone). Until it works though, I don't really want to invest $12 to $16 into this thing and then be left with a useless wireless charging stand.
I assume using a non original charger for now shouldn't be much of a problem apart from the charging being slow. It'll still charge, after all, even if at 500mA.
Sanras said:
Yeah, I found the Touchstone charger as well. I think that's probably the best choice, because not only is it pretty cheap and gets me a stand, but it also comes with the original barrel charger required for the proprietary HP charging circuit to use the full 2 Amps. (So I assume I could then use that barrel charger with a micro usb cable as a wired charger if I didn't want to use the wireless stand)
Click to expand...
Click to collapse
Yes the barrel charger from the wireless charger (Touchstone) can be use with any other USB cable and be use that way.
Sanras said:
Still, I'm impressed a 2011 device has wireless charging. If I do buy that Touchstone, I'll probably just use the wireless charging for convenience.
Click to expand...
Click to collapse
The HP Touchpad in 2011 had features not even available in devices at this moment in 2022.
Sanras said:
Anyway, I first need to get this thing to boot. I have the (seemingly) common dead battery issue. I received this tablet from a friend for free, he said it was barely ever used and then put away in storage. The tablet is in like-new condition, so I believe him on that.
I've plugged it into a 5V 2A (10W) USB charger from a Moto G Pure, and it's currently alternating between two lights on the home button. (And has been doing so for the last 8 hours or so). I'll leave it overnight as well.
Click to expand...
Click to collapse
Any charger providing exactly an output of 5.3 volts 2.0 amps will work, it does not need to be the original HP charger but with the same specs.
Sanras said:
At that point, I assume I should start trying power vol and home button combos to try to turn it on? Do you have any suggestions on what I should do to get this tablet to boot?
Click to expand...
Click to collapse
There is no special trick, just charge it in a warm room temperature above 80F with the right charger. Lithium batteries does not charge well in cold.
Sanras said:
Once I can get it to turn on, I'll probably look into getting the original charger (that Touchstone). Until it works though, I don't really want to invest $12 to $16 into this thing and then be left with a useless wireless charging stand.
I assume using a non original charger for now shouldn't be much of a problem apart from the charging being slow. It'll still charge, after all, even if at 500mA.
Click to expand...
Click to collapse
After it boots and is 100% charge the Tablet can be charge with any charger, but always keep it plug in ( charging ), never let it discharge.
HP_TOUCHPAD said:
Yes the barrel charger from the wireless charger (Touchstone) can be use with any other USB cable and be use that way.
The HP Touchpad in 2011 had features not even available in devices at this moment in 2022.
Any charger providing exactly an output of 5.3 volts 2.0 amps will work, it does not need to be the original HP charger but with the same specs.
There is no special trick, just charge it in a warm room temperature above 80F with the right charger. Lithium batteries does not charge well in cold.
After it boots and is 100% charge the Tablet can be charge with any charger, but always keep it plug in ( charging ), never let it discharge.
Click to expand...
Click to collapse
Ok, well, I don't have anything at 5.3 exactly, only 5.0V. I guess I'll go and buy a touchstone charger so I get the stand and barrel charger, so that it has the correct output. I really didn't think 0.3V would make much of a difference though.
Anyway, once I plug it into the original charger, how do I know when it is ready to turn on? Will it just turn on by itself, show a charging icon, or something else?
Sanras said:
Ok, well, I don't have anything at 5.3 exactly, only 5.0V. I guess I'll go and buy a touchstone charger so I get the stand and barrel charger, so that it has the correct output. I really didn't think 0.3V would make much of a difference though.
Anyway, once I plug it into the original charger, how do I know when it is ready to turn on? Will it just turn on by itself, show a charging icon, or something else?
Click to expand...
Click to collapse
It could probably work, give it a try.
1. LED light blink from side to side. ( The tablet's battery is depleted, but taking charge ( awake ). Leave it until it boots, it could take a week.
2. Second stage ( a battery sign with a red line under it ) will show on the screen.
3. It will boot.
Look at this guide for the info.
https://forum.xda-developers.com/t/hp-touchpad-novacom-repair-android.3960435/
HP_TOUCHPAD said:
It could probably work, give it a try.
1. LED light blink from side to side. ( The tablet's battery is depleted, but taking charge ( awake ). Leave it until it boots, it could take a week.
2. Second stage ( a battery sign with a red line under it ) will show on the screen.
3. It will boot.
Look at this guide for the info.
https://forum.xda-developers.com/t/hp-touchpad-novacom-repair-android.3960435/
Click to expand...
Click to collapse
Alright. Mine is blinking left/right, so I'll leave it until I see anything on the screen. (I shouldn't need to touch any buttons, right?)
HP_TOUCHPAD said:
It could probably work, give it a try.
1. LED light blink from side to side. ( The tablet's battery is depleted, but taking charge ( awake ). Leave it until it boots, it could take a week.
2. Second stage ( a battery sign with a red line under it ) will show on the screen.
3. It will boot.
Look at this guide for the info.
https://forum.xda-developers.com/t/hp-touchpad-novacom-repair-android.3960435/
Click to expand...
Click to collapse
Welp, I just bought a TouchStone. The eBay seller was surprisingly fast at replying to my offer, so now I have an in-box TouchStone charger arriving in a week for $13 and free shipping . Not bad.
Sanras said:
Welp, I just bought a TouchStone. The eBay seller was surprisingly fast at replying to my offer, so now I have an in-box TouchStone charger arriving in a week for $13 and free shipping . Not bad.
Click to expand...
Click to collapse
Great !
The TouchStone for some reason charge faster and better that USB.
Always keep the Tablet charging, never let the battery drain.
Have FUN!