Database Users

Power adaptors

Anyone seen where to buy extra power adapters? Be nice to have one with a longer cable. Stock one is very short.
Wish it was USB charged....
Sent from my Nexus One using XDA Premium App

http://www.androidtablets.net/forum/acer-iconia-tab-a500-forum/13840-chargers.html
Found another forum discussing the lame power cable.
Sent from my Nexus One using XDA Premium App

I couldn't stand it anymore so I snipped my wire and added another 4 ft.

I have been trying to get an additional PSU and car charger for my Acer. Went to Frys, tried almost EVERYTHING they have on those Universal PSU and NONE of them work in the pin connector for the Acer. What gives!
Try to get a free tip for my Energizer Xpal and also result in zero search. Any fellows have a pointer to where in getting the right tip? Thx

So far the ONLY one that I have found that works is the Enercell 12 / 1.5 with the 'G' tip, but it's like $30 at RadioShack. The tip itself is a little long and if it wiggles it will stop/start charging off and on.
I'm working with a few people to find some at decent price for us.

anyone measured the dimensions of the charging tip at all? If worse comes to worse we could always buy a generic 12v 1.5a AC adapter from ebay and buy the tip separately to solder on.
The USB port wont be able to charge the tablet fast enough and the battery will still drain. I've found that this happens on my Xperia X10 mobile phone. I have to disable 3G data in order get it to start charging.

julz said:
anyone measured the dimensions of the charging tip at all? If worse comes to worse we could always buy a generic 12v 1.5a AC adapter from ebay and buy the tip separately to solder on.
The USB port wont be able to charge the tablet fast enough and the battery will still drain. I've found that this happens on my Xperia X10 mobile phone. I have to disable 3G data in order get it to start charging.
Click to expand...
Click to collapse
The 'g' tip for the Encercell is 1.1mm x 3.0mm
Hope that helps

thanks for hte dimensions... unfortunately they don't sell that brand over here in Australia. I'm also reluctant to pay ~$30 for a charger.
I wonder if one of the round tips on this USB charger would fit:
http://www.dealextreme.com/p/10-in-1-usb-powered-charging-cable-for-ipod-psp-cell-phones-34674
It may still charge if the device is switched off completely.

atomicwedgie said:
I couldn't stand it anymore so I snipped my wire and added another 4 ft.
Click to expand...
Click to collapse
Yeah nice one, I was thinking of doing the very same thing as it should not cause any problems.
So did it go ok, what did you use for the extra wire?
________________________________________________________________________
ZTE Blade - Rooted OC 729mh - CM7 RC2 V/nice
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Iconia A500 - Rooted - HComb Sweet

I can confirm the Radio Shack Enercell (12vdc, 1.5a) with the 'G' tip works. Picked one up today for $29 (get the tip for free) and its currently charging the Acer as I type this.
Tip: http://www.radioshack.com/product/index.jsp?productId=3807935
Plug: http://www.radioshack.com/product/index.jsp?productId=3807944&numProdsPerPage=60

MJ-12 said:
Yeah nice one, I was thinking of doing the very same thing as it should not cause any problems.
So did it go ok, what did you use for the extra wire?
)
Click to expand...
Click to collapse
No charging difference at all except I don't have to have my face mashed up against the wall while it charges.
I used a piece of wire from an old 1amp charger I had. The extra piece doesn't even get slighty warm. 1.5 amps isn't all that much juice. I did solder the connetions too.

huh and it is only $10 for a new one.
http://us-store.acer.com/product.aspx?pn=LC.ADT0A.024

atomicwedgie said:
huh and it is only $10 for a new one.
http://us-store.acer.com/product.aspx?pn=LC.ADT0A.024
Click to expand...
Click to collapse
Even at $10 it is grossly overpriced
Acer needs to offer a PS with a six foot cable that is not crazy thin like the stock PS.

rushless said:
Even at $10 it is grossly overpriced
Acer needs to offer a PS with a six foot cable that is not crazy thin like the stock PS.
Click to expand...
Click to collapse
True story

Did a quick google on my powersupply PSA18R-120P.
Came up with http://pdf1.alldatasheet.com/datasheet-pdf/view/284284/PHIHONG/PSA18R-120P.html
or
http://www.phihongusa.com/html/pr_psa18r-120p.html
"The PSA18R-120P is priced at $10.23 per unit at OEM quantities"
Assuming they bought off the shelf:
DC Output Connector
2.1x5.5mm Center Positive Standard
For us australians: Going to see if I can visit Jaycar and will report back in with what I find.

Wal-Mart Car Charger
The Wal-Mart Car charger for portable DVD players works perfect.
a quick look at the wall power supply says that it it needs 12V at 1.5 amps with center of tip positive.
The Wal-Mart car charger puts out 2000ma (2amps), and has a tip that works.. It works PERFECT and it only costs 15 bux.
usb charging is out.. usb is only 5V at 500 ma (.5 amp).. not sure why everybody complains about wanting USB to charge their tablet. Even if they did add it, it would take so terribly long to charge it, you would get mad. With the proper charger and voltage, it only takes about 2-3 hours to fully charge the thing...
Good luck!

mikldom said:
The Wal-Mart Car charger for portable DVD players works perfect.
a quick look at the wall power supply says that it it needs 12V at 1.5 amps with center of tip positive.
The Wal-Mart car charger puts out 2000ma (2amps), and has a tip that works.. It works PERFECT and it only costs 15 bux.
usb charging is out.. usb is only 5V at 500 ma (.5 amp).. not sure why everybody complains about wanting USB to charge their tablet. Even if they did add it, it would take so terribly long to charge it, you would get mad. With the proper charger and voltage, it only takes about 2-3 hours to fully charge the thing...
Good luck!
Click to expand...
Click to collapse
This has been a topic of discussions for a LONG time hopefully you'll know.... Couldn't there be a potential issue with charging at 2 amps when it calls for 1.5?? I was told you could use less but not ore without causing damage to the battery?
I have a 'demo' on the way from overseas to try that I should get Wednesday. I will let you know ASAP.
This is a big issue with me as I prefer a charger at home and the office and I'd like something that I can charge on my desk 'without my face mashed up against the wall' (as atomicwedgie so perfectly put it)

it2steve said:
This has been a topic of discussions for a LONG time hopefully you'll know.... Couldn't there be a potential issue with charging at 2 amps when it calls for 1.5?? I was told you could use less but not ore without causing damage to the battery?
I have a 'demo' on the way from overseas to try that I should get Wednesday. I will let you know ASAP.
This is a big issue with me as I prefer a charger at home and the office and I'd like something that I can charge on my desk 'without my face mashed up against the wall' (as atomicwedgie so perfectly put it)
Click to expand...
Click to collapse
The Amp rating on wall chargers is what the charger is CAPABLE of outputting, not what it is always outputting. As long as there is current limiting built into the charging circuit (which is a must), then the charging circuit in the A500 won't pull any more amperage than it needs to charge. Don't worry about buying a higher amperage charger than is needed, but do worry about buying one that is lower as it can overload the charger.

silic0re said:
The Amp rating on wall chargers is what the charger is CAPABLE of outputting, not what it is always outputting. As long as there is current limiting built into the charging circuit (which is a must), then the charging circuit in the A500 won't pull any more amperage than it needs to charge. Don't worry about buying a higher amperage charger than is needed, but do worry about buying one that is lower as it can overload the charger.
Click to expand...
Click to collapse
Absolutely correct.

silic0re said:
The Amp rating on wall chargers is what the charger is CAPABLE of outputting, not what it is always outputting. As long as there is current limiting built into the charging circuit (which is a must), then the charging circuit in the A500 won't pull any more amperage than it needs to charge. Don't worry about buying a higher amperage charger than is needed, but do worry about buying one that is lower as it can overload the charger.
Click to expand...
Click to collapse
Yes... pulling too much amperage is a very bad thing.

I killed my phone's usb connector. HELP!!!

Hi!
I made big big big mistake. I thought I am able to make the inductive mod and solder it directly to the usb connector of the phone. Big fail! Dumb me...
First everything was working but then I wanted more and tried to resolder the new cable to the very small VCC pin of the usb connector. Puff and nearly the complete pad for USB VCC disappeared :-(. Seems I soldered to hot or to long.
I now have a phone which I can't charge any more. Right now I'm on 30% battery so I don't have much time...
I think there are some possibilities:
1st:
Find out where the USB VCC pin goes and solder a cable from there. Right now I had no luck and I can't measure with a ohm-meter to find an other pad with the same net. I also have no board layout from the pcb. Maybe someone of you can help with measuring or pcb data?
2nd:
I find a temporary solution by charging the battery (i have to of them) manual with a lab power supply and some resistor? Does anybody know the max ampere load for the battery of the SGS? Any ideas for charging voltage and series-resistor value?
3rd:
Is there a way to get a working main pcb for the GT-I9000? Maybe from a phone with a defect display? This shouldn't cost too much since I am also thinking about a new model.
4th:
Will it blend? Kaboom? Burn baby burn? ...
Hope I can get help with this!

Well you need a hardware engineer to answer you and here youll rarely find one.
hit thankxx if i helped. sent from my mind through telepathy (ya its possible)!

Purchase another battery (have at least 2) and an external battery charger.

upichie said:
Purchase another battery (have at least 2) and an external battery charger.
Click to expand...
Click to collapse
I already have 2 batteries. Where do I get such a "external battery charger"? Most of them seems to use usb connectors and this is broken on my phone.

Search for it on ebay and if ypu cant find one search for it on google.
hit thankxx if i helped. sent from my mind through telepathy (ya its possible)!

BHuvan goyal said:
Search for it on ebay and if ypu cant find one search for it on google.
Click to expand...
Click to collapse
For example, one of these.
(Note: I merely searched "i9000 battery charger" and sorted by price. I in no way recommend, have tested, or endorse the usefulness of the previously linked to product.) ...

fpdragon said:
...
2nd:
I find a temporary solution by charging the battery (i have to of them) manual with a lab power supply and some resistor? Does anybody know the max ampere load for the battery of the SGS? Any ideas for charging voltage and series-resistor value?
...
Click to expand...
Click to collapse
it is dangerous but possible:
use a precision voltage source of
4.195 V +- 10mV
and a series resistor of 2.2Ohm, 1%, 1/2W
if your batt is down to 3.3V it will start charging with about 400mA and goes up to 4.195 V ( will need several hours, you can charge it over night)
never charge to a voltage above 4.210V !!! your LiIon batt will die !!!
best solution is: go and buy an external charger with a battery (approx. 12-19€ with shipping) on ebay
look for a polarcell 1800mAh batt, like this one
http://goo.gl/Cun7U
it's worth the money, i've bought one and use it since two weeks and am very pleased with it.
But be careful, there are some other batterys from hongkong, which also claim 1800mAh, but they don't have it, i had one too and it measured only 1300mAh.

tiwag said:
it is dangerous but possible:
use a precision voltage source of
4.195 V +- 10mV
and a series resistor of 2.2Ohm, 1%, 1/2W
if your batt is down to 3.3V it will start charging with about 400mA and goes up to 4.195 V ( will need several hours, you can charge it over night)
never charge to a voltage above 4.210V !!! your LiIon batt will die !!!
best solution is: go and buy an external charger with a battery (approx. 12-19€ with shipping) on ebay
look for a polarcell 1800mAh batt, like this one
http://goo.gl/Cun7U
it's worth the money, i've bought one and use it since two weeks and am very pleased with it.
But be careful, there are some other batterys from hongkong, which also claim 1800mAh, but they don't have it, i had one too and it measured only 1300mAh.
Click to expand...
Click to collapse
thanks for the detailed infos.
I already have one of these 1800mAh batteries and my subjective impression was good. The second battery I have is the original one.
I will buy one of these charging adapters. Until it is coming I was thinking about using a labratory power supply with your mentioned 2,2Ohm Resistor and with a Ampere limitation of 400mA. Should be no risk, isn't it? Then slowly rise the voltage until I get the current of about 300mA.
The thing is... I have no spare phone and I really would need it on Monday.

I configured the power supply to 4,21V at 400mA max (current delimiter).
It startet at about 4V and I had a constant 400mA load. After about one hour the current delimiter switched off and I now have stable 4,21V. The current lowers slowly.
I think this should be a save charging procedure?

A doubt about htc charger.

I have an hd 2 and its a used one when i bought it. So i dont get the original charger. I got a samsung charger @ 5v, 700ma. But when i connect it, the phone shows usb detected. Though its charging, its pretty slow, i think the usb mode makes it. Taking only few 100-300ma only. And the charging takes long. I know htc need 1amp charger. But i cant get it here. So i decided to rip the charger and make some modifications ( like grounding or shorting the data pins- the middle two) . So i need a little help. Any of you guys having an htc original charger pls help me. Howz the data pins connected in the original charger? Are they shorted together or they are open? Or they are grounded? Pls help me those who know abot it. I want to make my charger form usb charging to default charging. It badly needed
send from my hd2 @ miui 1.12.2

That's weird. I've got original Samsung 0.7A charger here and HTC Desire HD does detect it as charger aswell and takes 1A from it. Shortening datapins together does usually convince most of phones that they are connected to wall charger. Maybe it's not the case for HD2.

Samsung Galaxy Phone Rapid Charger Modcheck this thread few under yours... speaking of shorting data pins.

HD2 is same as most, requires 2 data pins to be shorted together (2 inner pins).
Easy mod on most charger units. If charger is a cheap china job, the quoted 700mA figure could be optimistic ... temporary mod it by shorting data pins together & see how it performs ...

But there are 3 pins and not 4. So which ones are the middle?
send from my hd2 @ miui 1.12.2

Can you supply a good picture of this.

showlyshah said:
But there are 3 pins and not 4. So which ones are the middle?
send from my hd2 @ miui 1.12.2
Click to expand...
Click to collapse
Sorry thatz an error. I mean 5 pin and not 4. All the pins are present( which are prsent in data cable)
send from my hd2 @ miui 1.12.2

Maybe this will help ...

Is it microusb?
You're supposed to shorten D+ and D-, but rather in charger. ;P

Mister B said:
Maybe this will help ...
Click to expand...
Click to collapse
Is that micro usb?
send from my hd2 @ miui 1.12.2

Thakz dude
send from my hd2 @ miui 1.12.2

@ mister b and rebelloz ..
Thankz dude. I will click thankx button when i get to pc. Now i am frm phone
send from my hd2 @ miui 1.12.2

Very useful guide as I am facing the same problem. Thanks.

Useful guide i am also facing the same problem...

can anyone confirm if it worked for them? I made an adapter by shorting both data leads, but it didn't work for me. My phone will charge when switched off, but when it's on with both gps and data running, it barely gets enough current to charge the battery. Only my original cable works.

stanburn said:
can anyone confirm if it worked for them? I made an adapter by shorting both data leads, but it didn't work for me. My phone will charge when switched off, but when it's on with both gps and data running, it barely gets enough current to charge the battery. Only my original cable works.
Click to expand...
Click to collapse
What device?
Signalling a dumb charger with MiniUSB (as opposed to MicroUSB) is less standardized. On most MiniUSB devices it's done by shorting pin 4 to pin 5, but it varies.

I could be wrong about this (someone please correct me if I am), but I believe the transformer inside the charger will need physically replacing if you're going to be pulling more current from it. If it's not too much over the charger's rated current it may be ok, but I've burned up more than one of them by hooking it up to something that draws more than what they were designed for.

xHausx said:
I could be wrong about this (someone please correct me if I am), but I believe the transformer inside the charger will need physically replacing if you're going to be pulling more current from it. If it's not too much over the charger's rated current it may be ok, but I've burned up more than one of them by hooking it up to something that draws more than what they were designed for.
Click to expand...
Click to collapse
Depends as part of the reason of the mod is to achieve full power draw of a acceptable rated charger by making the phone think it is connected to HTC charger & thus charge at mains rate of 1A or a little above rather than USB standard of 500mA. Most chargers of reasonable quality will supply 800mA to 1.2A & if you buy wisely a bit higher.
Issue arises on cheap china chargers with false specs that actually only handle 500mA & perhaps 800mA max for short bursts but when these are forced to supply more will fail.
A good quality charger will have no problem supplying full charge to a HTC handset ...

A good example - getting a non-iDevice to pull its full rated charge current from an iPad charger (charger rated 2.1A, but nothing but iDevices will pull any more than 500 mA from it without modifications.)
A good example of cheap Chinese chargers - the "1A" chargers carried by Monoprice. They're good for 300-400 mA at best. You won't burn them out as it's a fundamental current limit setting of the SMPS chip, but the voltage will droop if you try to pull too much out of it. It's the only Monoprice product I've ever been disappointed with.

Originally Posted by stanburn
can anyone confirm if it worked for them? I made an adapter by shorting both data leads, but it didn't work for me. My phone will charge when switched off, but when it's on with both gps and data running, it barely gets enough current to charge the battery. Only my original cable works.
Click to expand...
Click to collapse
What device?
Signalling a dumb charger with MiniUSB (as opposed to MicroUSB) is less standardized. On most MiniUSB devices it's done by shorting pin 4 to pin 5, but it varies.
Click to expand...
Click to collapse
sorry about that, I have the HD2. if I use the replacement cable with both data lines I shorted, it never charges when the phone is running. but if I swap my original cable the phone charges normally.
it's as though it ignores the shorted data lines, or maybe the HD2 doesn't really work that way?
I'm worried because my original cable is beginning to show signs of wear and tear.
Sent from my HTC HD2 using XDA

[Q] S4 only charges when plugged in to my computer

My phone only goes into charging mode when I plug it in to my computer. Anyone have this problem?

tawalla said:
My phone only goes into charging mode when I plug it in to my computer. Anyone have this problem?
Click to expand...
Click to collapse
Have not had this problem myself. Try another USB charger? Just about anything that's 500mA will work (albeit not nearly as fast as the 2.0 amp charger that came with your phone).
I suspect your charger.

Aou said:
Have not had this problem myself. Try another USB charger? Just about anything that's 500mA will work (albeit not nearly as fast as the 2.0 amp charger that came with your phone).
I suspect your charger.
Click to expand...
Click to collapse
It was the cable. I really didn't suspect it would be that since I have barely used it and I've only had it for two weeks. Thanks!

tawalla said:
It was the cable. I really didn't suspect it would be that since I have barely used it and I've only had it for two weeks. Thanks!
Click to expand...
Click to collapse
Good to hear it was a simple solution. You might check with the place you purchased it from to see if they will provide a new cable. I guess we can just be glad you didn't find out about the cable during the middle of an Odin flash...

Aou said:
Good to hear it was a simple solution. You might check with the place you purchased it from to see if they will provide a new cable. I guess we can just be glad you didn't find out about the cable during the middle of an Odin flash...
Click to expand...
Click to collapse
No kidding. That would hurt a little

I am now having this problem after my phone got wet. No AC or DC chargers will work but the phone will always charge from a computer or even the USB interface of a car.
Even if I can get an AC or DC charger to be recognized, the phone will show as charging but the battery will continue to decline.
It is making no sense to me though I assume getting the phone wet partially fried something.

Yeah the voltage is increased to charge you battery when on AC power, at the kernel level. USB voltage is lower. So i'd say surely fried, and will no doubt stop working sooner or later.
I know that on my s2 I had an issue where it would say its charging and when I woke up in the morning no charge at all. The pin/row of pins or bar if you will would bend down and not make good contact. I used a tooth pick to pry up on it every time it did that.

Jnewell05 said:
Yeah the voltage is increased to charge you battery when on AC power, at the kernel level. USB voltage is lower. So i'd say surely fried, and will no doubt stop working sooner or later.
I know that on my s2 I had an issue where it would say its charging and when I woke up in the morning no charge at all. The pin/row of pins or bar if you will would bend down and not make good contact. I used a tooth pick to pry up on it every time it did that.
Click to expand...
Click to collapse
Thanks. I didn't realize that the charging port was removable on the S4 so I swapped that out and all is fine now. :good:

Ummm... No its not the voltage. It is the ID pin. The voltage stays the same. The only actual difference is the milliamp mAH output of the charger. A normal USB plug has 500mA our charger has 2000. How the phone tells the difference? The 2 data pins inside he charger are shorted together. The voltage always stays the same.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

[Q] charging problem

Hello, I bought tegra note 7 tab couple of months ago. It was working fine but recently im facing problem in charging it. The tab does not recognise its original charger and does not charge with the charger. Tried a lot but cant understand why? Somebody help plz

irfanalik97 said:
Hello, I bought tegra note 7 tab couple of months ago. It was working fine but recently im facing problem in charging it. The tab does not recognise its original charger and does not charge with the charger. Tried a lot but cant understand why? Somebody help plz
Click to expand...
Click to collapse
The TN7 has unfortunately been known to have wonky USB ports, so if you're having issues with it then you might want to contact the manufacturer and see about getting a replacement.

I had the same problem and I was able to fix it. Turn off the device, take a needle and try to narrow the USB port, GENTLY AND SLOWLY, try to make the hole to be tighter. I hope it helps. Tegra note is ****y stuff...

How?
rochspioch said:
I had the same problem and I was able to fix it. Turn off the device, take a needle and try to narrow the USB port, GENTLY AND SLOWLY, try to make the hole to be tighter. I hope it helps. Tegra note is ****y stuff...
Click to expand...
Click to collapse
Hey there my usb port, like many others has also gone bust. You mentioned trying to narrow the usb port, what do you mean by this? My tab has be useless for the past month since curries refused to repair it saying it was my fault. I guess its all down to me somehow fixing it any help would be appreciated. Thanks

Have you tried holding down the power button for around 30secs. My battery got drained completely and it didn't seem to be charging, even after a few hours using different chargers. After holding down the power button down for 30 seconds. Then releasing the button. Then pressing again. It came alive.
I may have had a different problem but hope it works for you.

charging problems...the port maybe?
Just bought a refurbished evga tn7 from ebay and it was charged 84% so cool. I played on it for a while bout maybe an hour or so. I left it to charge that night and it didn't charge very fast. Ever since it will only charge with the wall outlet with another cable or the one that came with it. Takes about 6 hours or so to charge even 40%. It also discharges very quickly about a percent a minute or so. It came with the 4.4.2 update. I love this tablet but I can hardly use it because of this. Please help!

Abdur Desai said:
Hey there my usb port, like many others has also gone bust. You mentioned trying to narrow the usb port, what do you mean by this? My tab has be useless for the past month since curries refused to repair it saying it was my fault. I guess its all down to me somehow fixing it any help would be appreciated. Thanks
Click to expand...
Click to collapse
hya - its not hard but you need some nerve, it is relatively easy to wire a QI wireless receiver direct to the battery then fit a charger into a suitable case.
I've done four of these now using fintie slate 7 extreme cases (ebay US) and QI elements from ebay UK. cost about 25 quid or so.
short term or as an alternative you can strip a usb cable or get a micro usb extension cable and wire that to the battery instead so you can charge it up using a smart USB charger. it is possible to wire into the charging circuit so it registers if you are carefull and solder to the board side of the USB otherwise the QI is probably a better option as the charger will switch off when it decides the battery has been charged minimising any possible fire risk from overcharging,
it is also possible to get a phone/computer repair shop to fit a new usb socket as the boards aren't available for some daft reason - they are listed on alibaba but not available.
the only issue is not having a working usb port but as long as you don't want to root the device it doesn't seem to be needed.
---------- Post added at 07:01 PM ---------- Previous post was at 06:55 PM ----------
Squee777 said:
Just bought a refurbished evga tn7 from ebay and it was charged 84% so cool. I played on it for a while bout maybe an hour or so. I left it to charge that night and it didn't charge very fast. Ever since it will only charge with the wall outlet with another cable or the one that came with it. Takes about 6 hours or so to charge even 40%. It also discharges very quickly about a percent a minute or so. It came with the 4.4.2 update. I love this tablet but I can hardly use it because of this. Please help!
Click to expand...
Click to collapse
my wireless mod charges slower than it should as its only rated to 1A but not that slow - Ideally you need a 2A charger for tablets min 1A for decent charging, most phone chargers are 500-750mA.
otherwise turn the tablet off and all the power goes to charging.