Let's reverse engineer a POGO charger. (With a used pogo cable I just bought)! - Nexus 10 Accessories

So I just bought a pogo charger from ebay.
With it, I was able to bring back my nexus 10 that I once thought was dead for sure.
I think it's ridiculous that the nexus 10 didn't come with a Pogo charger,
even if the micro usb charger takes 10 years to go from 0 to 10%.
I don't have much knowledge on how to reverse engineer this, but I have tools and access to tools.
So my proposal is, if people can help me, we can create a DIY POGO charger for anyone who is still using this tablet, including myself.

I'll be using this post to post updates on it. Including pictures in the future.

I don't have much knowledge either, but am interested in the outcome. Thanks for posting this!

I found this old thread: https://forum.xda-developers.com/showthread.php?t=2024366&page=4
From user onoakino:
"Yay! With the tablet lying on it's back, counting from the left-most, pin 1 is ground, and pin 4 is 5v. I used a USB cable from an HP mouse that I had lying around and connected black wire to pin 1, and red wire to pin 4.
Nexus 10 charges! Hurray! "
---------- Post added at 05:15 AM ---------- Previous post was at 04:53 AM ----------
Also this: https://forums.androidcentral.com/google-nexus-10-tablet/243018-pogo-charger-arrived-today-2.html
Seems it's symmetrical (which makes sense given that the charger works in either direction). So at any given point it's drawing voltage from just one of the two 5v pins (I'm not technical so I also have no idea what I'm talking about).
1-Gnd
2-1.21 VDC +Data
3-5.25
4-5.25
5-1.21 VDC -Data
6-Gnd

policenauts said:
I found this old thread: https://forum.xda-developers.com/showthread.php?t=2024366&page=4
From user onoakino:
"Yay! With the tablet lying on it's back, counting from the left-most, pin 1 is ground, and pin 4 is 5v. I used a USB cable from an HP mouse that I had lying around and connected black wire to pin 1, and red wire to pin 4.
Nexus 10 charges! Hurray! "
---------- Post added at 05:15 AM ---------- Previous post was at 04:53 AM ----------
Also this: https://forums.androidcentral.com/google-nexus-10-tablet/243018-pogo-charger-arrived-today-2.html
Seems it's symmetrical (which makes sense given that the charger works in either direction). So at any given point it's drawing voltage from just one of the two 5v pins (I'm not technical so I also have no idea what I'm talking about).
1-Gnd
2-1.21 VDC +Data
3-5.25
4-5.25
5-1.21 VDC -Data
6-Gnd
Click to expand...
Click to collapse
I've seen the first post, but I haven't seen the second. It's good to confirm both posts says the same thing.
I'll disect my charger in the future and post what it looks like, so we can make a block diagram for it.

If you ever get one created I would like to purchase one for my nexus 10 tablet. [email protected]

I bought a new battery. I have been using it for 1 year, it won't charge and the tablet won't turn on

Related

does this accessory exist?

I want a case that has a stand, wirelessly charges the phone but still leaves the usb port open (or has a secondary), and that all you have to do to put it in your car is snap the case into a holder I know it's a bit much to ask but I can't believe no-one would have thought of it before
price is of no consequence
Sent from my SPH-L900 using xda app-developers app
I'm planning to build pretty much this, if that's any help. I have the Samsung stand, and just plug the cable in at the moment. I'm planning to mod it with the touchstone stuff and install the charger just below the surface that the phone sits on in the dock, and just plug into that instead. I also want to activate car mode, so I'm planning on using NFC for that but I don't know too much about what can be done with it.
---------- Post added at 11:22 PM ---------- Previous post was at 11:20 PM ----------
Using this dock:
http://www.amazon.co.uk/Samsung-Gal...1?s=electronics&ie=UTF8&qid=1352668918&sr=1-1
Fits the Note 2 perfectly as well
I would be very interested to see your setup. I've been looking for a proper Note II dock that supports aux-out through microUSB but haven't really seen any promising products. So I've got it in my head that I could mod a Samsung Universal mount for wireless charging and Bluetooth connectivity. First mod the phone for wireless charging and add an inductive plate on the dock. As far as audio transfer goes I have a Sony Ericsson MW600 Bluetooth Adapter that I was thinking I could use. Last throw on a NFC tag to put the phone in car mode and turn on BT.
Thoughts, ideas?
you know that the note II supports charging/MHL/USB OTG now all at the same time?
djashjones said:
you know that the note II supports charging/MHL/USB OTG now all at the same time?
Click to expand...
Click to collapse
You forgot the USB Audio output. Get all that with USB (x3) & Docked profile on this smart dock: http://www.samsung.com/us/mobile/cell-phones-accessories/EDD-S20JWEGSTA
If I had this compatibility on a Car Dock with a pivot mount that fits our SGN2, that would be awesome (sans MHL, not needed in a car but maybe the RV?).
I would pay quite a bit for that. :good:
My idea was a no-go. You will not be able to add wireless charging to that dock as it stands. I'm currently looking for a more suitable dock to modify, but I might see if I can modify the Samsung one once my touchstone arrives and I can see what parts I need to include in it. I don't think it's going to happen though - there's just too much mechanics in the way to operate the arms.

Pogo charger

Saw this on Android Central
Yah and he won't say where he got it.
Sent from my Nexus 10 using Tapatalk 2
distortion said:
Yah and he won't say where he got it.
Click to expand...
Click to collapse
:/
As for a question, is it possible to charge with both the Pogo Charger and USB, at the same time, for faster charging?
espionage724 said:
:/
As for a question, is it possible to charge with both the Pogo Charger and USB, at the same time, for faster charging?
Click to expand...
Click to collapse
Now THAT is an interesting question.
Err, so release an actual charger later sold separately? I thought it was supposed to be a pogo dock...
Sent from my Nexus 7 using XDA Premium HD app
We've been hearing that they meant to ship that pogo charger with the tablet but something stopped them at the last minute.
My favorite theory? It's an awful lot like an Apple Mag Safe connector, and Apple would LOVE to get a sales ban if they thought they could make it stick. They'd screw both Google and Samsung at the same time and laugh the whole way. So I bet Google and/or Samsung decided not to risk it.
The other theory was that it was defective or didn't pass safety certification. Also likely.
But the one theory that I personally (and completely) reject is that they held back on it in order to make more money selling it as an accessory. Why? Because Samsung AND Google have a **** record in getting device accessories to market in a timely manner, for one thing. So they just don't end up selling that many, if they sell them at all (look at all the hard to find Nexus phone docks, car docks, cases, etc).
And I don't think they held it back to cut costs on the N10 since it's really only a few more pennies expensive than a USB to microUSB connector...same amount of wires, a little bit more plastic, and a couple of cheap magnets that plug into the SAME mains charger they already shipped with the device.
dmoney94 said:
Saw this on Android Central
Click to expand...
Click to collapse
I think when it will become available all you gonna need is the special magnetic plug with the wire. No need new plug in adapter that goes to the wall ,that one on the picture is the original adapter came with the tablet same specs.
So than it should not be expensive!!
And I'm sure Google is aware of the issue.
---------- Post added at 08:49 PM ---------- Previous post was at 08:45 PM ----------
espionage724 said:
:/
As for a question, is it possible to charge with both the Pogo Charger and USB, at the same time, for faster charging?
Click to expand...
Click to collapse
The pogo charger should be fast enough so at while you charging it you can use the USB for other things
---------- Post added at 08:52 PM ---------- Previous post was at 08:49 PM ----------
Croak said:
We've been hearing that they meant to ship that pogo charger with the tablet but something stopped them at the last minute.
My favorite theory? It's an awful lot like an Apple Mag Safe connector, and Apple would LOVE to get a sales ban if they thought they could make it stick. They'd screw both Google and Samsung at the same time and laugh the whole way. So I bet Google and/or Samsung decided not to risk it.
The other theory was that it was defective or didn't pass safety certification. Also likely.
But the one theory that I personally (and completely) reject is that they held back on it in order to make more money selling it as an accessory. Why? Because Samsung AND Google have a **** record in getting device accessories to market in a timely manner, for one thing. So they just don't end up selling that many, if they sell them at all (look at all the hard to find Nexus phone docks, car docks, cases, etc).
And I don't think they held it back to cut costs on the N10 since it's really only a few more pennies expensive than a USB to microUSB connector...same amount of wires, a little bit more plastic, and a couple of cheap magnets that plug into the SAME mains charger they already shipped with the device.
Click to expand...
Click to collapse
Ops I did not see your post , but that make sense!
The charger in the pics above is labeled 5V/2A (10W) - the same as the travel charger that comes with the N10 - in fact it is labeled "travel adapter", so this IS the charger that comes with the N10.
I hope the pogo charger will have at least 5V/5A (25W) when they release it. Even a 5V/10A (50W) would not really be too strong for a 9000mAh battery.
Valynor said:
The charger in the pics above is labeled 5V/2A (10W) - the same as the travel charger that comes with the N10 - in fact it is labeled "travel adapter", so this IS the charger that comes with the N10.
I hope the pogo charger will have at least 5V/5A (25W) when they release it. Even a 5V/10A (50W) would not really be too strong for a 9000mAh battery.
Click to expand...
Click to collapse
5V/2A feeding through the pogo charger should be fine.
2 amp chargers are what the Galaxy Tab/Note 10.1, the iPad1/2/3/4, Transformer, Xoom, etc use with similar sized batteries. Of course they're all mated to a higher-rated connector than microUSB.
A 2 amp charger should mean 2 hours from empty to fully charged, and enough current to throw a slower charge on while using the tablet.
I estimates for my nexus 10, it would take around 7-7.5 hours for a full charge
Croak said:
5V/2A feeding through the pogo charger should be fine.
2 amp chargers are what the Galaxy Tab/Note 10.1, the iPad1/2/3/4, Transformer, Xoom, etc use with similar sized batteries. Of course they're all mated to a higher-rated connector than microUSB.
A 2 amp charger should mean 2 hours from empty to fully charged, and enough current to throw a slower charge on while using the tablet.
Click to expand...
Click to collapse
I don't know much about batteries, but in a mathematical point of view, shouldn't a 9Ah battery take 4,5 hours to fully charge if supplied with constant 2A? 2A * 4,5h = 9Ah
Valynor said:
The charger in the pics above is labeled 5V/2A (10W) - the same as the travel charger that comes with the N10 - in fact it is labeled "travel adapter", so this IS the charger that comes with the N10.
I hope the pogo charger will have at least 5V/5A (25W) when they release it. Even a 5V/10A (50W) would not really be too strong for a 9000mAh battery.
Click to expand...
Click to collapse
But then couldn't we find a "generic" 5V/5A charger on like ebay or electronics store and just plug in the USB cable into it? Or heck even the Apple charger...
---------- Post added at 02:26 PM ---------- Previous post was at 02:19 PM ----------
Croak said:
5V/2A feeding through the pogo charger should be fine.
2 amp chargers are what the Galaxy Tab/Note 10.1, the iPad1/2/3/4, Transformer, Xoom, etc use with similar sized batteries. Of course they're all mated to a higher-rated connector than microUSB.
A 2 amp charger should mean 2 hours from empty to fully charged, and enough current to throw a slower charge on while using the tablet.
Click to expand...
Click to collapse
iPad chargers are 5.1V/10A btw... And the iPad 3 still takes a lot longer to charge the the iPad2.
Croak said:
A 2 amp charger should mean 2 hours from empty to fully charged, and enough current to throw a slower charge on while using the tablet.
Click to expand...
Click to collapse
I'm sorry but I fear physics are not on your side, young Padawan.
garciaw said:
I don't know much about batteries, but in a mathematical point of view, shouldn't a 9Ah battery take 4,5 hours to fully charge if supplied with constant 2A? 2A * 4,5h = 9Ah
Click to expand...
Click to collapse
Yep. But a LiIon charging current always tapers off towards the end (last ~20%), so it will take longer than that.
G-Bus said:
But then couldn't we find a "generic" 5V/5A charger on like ebay or electronics store and just plug in the USB cable into it? Or heck even the Apple charger...
Click to expand...
Click to collapse
In theory, yes. Maybe they limited the amount of current that can be applied via the micro USB port, though. I will not be the one to test it.
G-Bus said:
But then couldn't we find a "generic" 5V/5A charger on like ebay or electronics store and just plug in the USB cable into it? Or heck even the Apple charger...
---------- Post added at 02:26 PM ---------- Previous post was at 02:19 PM ----------
iPad chargers are 5.1V/10A btw... And the iPad 3 still takes a lot longer to charge the the iPad2.
Click to expand...
Click to collapse
I believe those chargers are 10 watts, not 10 amps.
convexmacrolabs said:
I believe those chargers are 10 watts, not 10 amps.
Click to expand...
Click to collapse
Yea and the new ipad 4th come with a 12 watt i believe
I need one of these, got spoiled with how fast my old Xoom would charge. I'd likely end up buying two if I could, one as my home charger and extra cable to keep in my truck. I'm still glad the option of micro USB is on the Nexus too though.
Someone has already the nexus 10? That would clear all the questions...
I do, and indeed it takes almost 5 hours to charge, like they said, elemental physics.
I should receive an external battery with 3a, will try that, though I don't know if the 3a are supplied or if they are 2 plus 1
Enviado desde mi Nexus 10 usando Tapatalk 2
rookiegenius said:
I estimates for my nexus 10, it would take around 7-7.5 hours for a full charge
Click to expand...
Click to collapse
That's about right, I received mine yesterday with about a 65% charge, it took almost 4 hours to 100%. Granted it was on and downloading software with the screen on about half the time....
anyone find out where to buy one of these?

Man I'm confused, Kensington Charger don't work with Asus Tablets?

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.

[Q] Power on cover when charging

Power on cover when charging,
I don't know if I use the correct words but when my TF701 is charging and I go over the cover with my fingers I feel a some tingling.
If I rotate the charger in the socket it's a bit else but still it's there.
When I use my TF101 charger I don't feel this at all.
Any else feel this and know a possible solution?
Elrar
It's common on the tf700 as well as if the tablet is not fully grounded while charging.
Sent from my SGH-M919 using Tapatalk
aznmode said:
It's common on the tf700 as well as if the tablet is not fully grounded while charging.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Don't have this behavior.
But when on charger it has no ground connection.
elrar2012 said:
Power on cover when charging,
I don't know if I use the correct words but when my TF701 is charging and I go over the cover with my fingers I feel a some tingling.
If I rotate the charger in the socket it's a bit else but still it's there.
When I use my TF101 charger I don't feel this at all.
Any else feel this and know a possible solution?
Elrar
Click to expand...
Click to collapse
I have this issue with my TF700 when in Europe but not when in the United States. It only happens when charging the keyboard dock. Since I use the same charger and don't have any issues with other electronic devices, I assume that it is related to a combination of the voltage and grounding in my dock.
Got my TF701 today and its the same.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
some details
Here's what I have noticed so far:
Infos:
- The TF101 was shipped with a different charger. On that one I have a set of plugs to match different sockets (sort of a travel adapter).
- I live in Switzerland, ungrounded connectors look a bit like this <- -> and can be used rotated. Connectors with PE look more like this <-.->, and cannot be rotated.
- In any test I used the docking, and tried with two identical power supplies
- The TF101 charger showed this effect from day one, but only in one orientation. Use it the other way round, problem gone.
- The TF30x charger shows this effect, but in both charger orientations, and slightly less noticeable
- The TF701 charger shows the same effect as with the TF30x
Let's swap chargers. (The cables are different, the chargers themselves, which generally are no more than 5V/15V CV, which switch from 5V to 15V when a tablet is detected are interchangeable).
This showed the effect is clearly caused by the chargers. It's safe to say there's different circuitry inside the different charger revisions.
My conclusion: If you want to get rid of this effect, try finding one of the old international chargers and use it with your TF701 cable.
What may work: Try an isolation transformer
Also worth a try: Aftermarket chargers
---------- Post added at 12:34 PM ---------- Previous post was at 12:17 PM ----------
I'm pretty sure this is called 'stray voltage', but not a problem.
as i can not post links, try this:
search google for 'noteboook tingle sensation', click the dell community link
also, wikipedia has an article about stray voltage (warning: technical)

Possible unable to charge fix??

Just experiencing the drain of death...
Backstory:
Bought this tablet at a pawnshop and battery was dead for 10$.
Came home and recently had pulled a pile of USB chargers out of the dumpster.
Plugged it into random charger.
Let sit for couple hours, got battery ? sign.
Left over night, battery with critical red sign.
Left another day and almost 35% charged and then was able to turn on.
Corrupted android install and rescue.
Few days of searching, found all the webdoctor files, update script, restored, upgraded to latest webos.
Added PAC-ROM 4.4.4, ran great.
Upgraded to 5.1? Ran like crap and then horrible battery drain.
Left it alone for a few days and died all the way.
The fun part:
Wouldn't charge. Tried 5 different USB chargers, all 2A. No sign of life at all.
Start to think back over the steps and realized...I hadn't tried the first charger I used!
Pulled it off my raspberry Pi cause I knew it was a 2Amp.
Plugged in the tablet. INSTANT BUTTON LIGHT!!!
Left overnight. Hard Reset gets me ? battery logo. Still charging and waiting.....
Differences:
Samsung Galaxy USB Charger - 2Amp 5.3V!
Reports online say some put out as much as 5.6. Most agree the battery charge circuit will regulate the excessive voltage down on 95% of devices.
You can find them online for 5$. Someone else try a 5.3v charger and confirm this.
Explains why my Raspberry was running hot as well..
Haha my sister just asked if she could use my HP touchpad, couldn't find the charger, my Samsung Note 3 charger will get it going, but once it dies dies and I plug it in, it will need a solid 20 minutes before I can get it to hit 0 percent and turn on. I just ended up buying some chargers and cables based on TheWireCutter website that has a ton of information about both chargers and cables... seriously I ended up spending probably nearly an hour looking at just different micro usb cables (they are not all made equal) obviously length of the cable and gauge can affect the max amp it can put through... ended up buying EZOPower Extra Long 6ft Black Micro-USB. Even though they didn't have the highest rating in terms of consistent amp the only better ones were 3 foot long cables, and I really wanted the 6ft. For charger I got Anker 24W 4.8A 5V charger with 2 usb, which makes each one output 2.4A 5V and 12W with a high reliability. So I'll see if 5V will make it haha.
The stock HP charger than comes with the Touchpad is 5.3v...
I find that for the BEST and fastest charge, you need to hit that sweet spot of 5.3V. Anything that puts out less will take practically an eternity or not charge at all really.
darranwil said:
...[-SNIP-]... Samsung Galaxy USB Charger - 2Amp 5.3V!
Reports online say some put out as much as 5.6. Most agree the battery charge circuit will regulate the excessive voltage down on 95% of devices.
You can find them online for 5$. Someone else try a 5.3v charger and confirm this. ...
Click to expand...
Click to collapse
theronkinator said:
The stock HP charger than comes with the Touchpad is 5.3v...
Click to expand...
Click to collapse
Yes, theronkinator is correct about the voltage ratings.
My perception is that the TouchPad is a picky eater when it comes to chargers and USB cables -- even more-so in webOS than Android. I suspect webOS is coded to fight, resist, or flat-out refuse connection with any charger that doesn't precisely match the current and voltage specs of the HP charger. Apple seems to be the same way.
Keep in mind that the USB cable can play an equally-important role in the charging circuit. Some of the cheap USB cables are wired for charging only. I recall reading something years back that the original HP TP cable was wired differently from standard USB cables. I think it had something to do with resistance across certain pins, but I'm not sure.
It's a sad fact of e-waste that more than a few HP TPs and iPads have found their way into land fills, just because the owner used the wrong charger and/or USB cable and then blamed the tablet for not charging.
---------- Post added at 06:33 PM ---------- Previous post was at 05:53 PM ----------
As I said in the above post, there is a physical difference in the HP TP USB cable. Details, courtesy mpgrimm2, can be found here.

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