Database Users

Different charging option?

I'm not sure if this is even possible and sorry if it has already been answered, but is there a way to make the A500 micro usb port actually charge the tablet? I know it doesn't charge thru that port now, but is there a mod that can be done via software tweaking; or is it a hardware issue that can't be changed? It would be nice to charge the A500 with a micro usb cord and especially in the car with my Thunderbolt's car charger.

Microusb does not put out enough juice to charge tablets effectively.
Sent from my A500 using Tapatalk

From what I understand, the USB connection won't provide enough current to charge the batteries sufficiently, so I would say no. This is the same on the iPad as well, no USB charge like is possible with the iPhone. The dock (shown on the Acer website) will at least allow another charging option, albeit probably not what you had in mind. Best thing to do is probably just get a power inverter for your car and plug it in.

I don't think there is enough electrical current through the USB port to charge the device effectively. As USB can only give you 5v 900mA, this device requires 12v 1.5A to charge.

Oh, gotcha. Thanks everybody, it makes sense about not putting out enough juice. I wondered if it didn't charge maybe because Acer didn't design for it to, and it was strictly for data transfer; which it is.

I've always wondered why they didn't include one of the double ended USB plugs like DVD burners over USB use. Still 2 x 5V x 500mA(900mA is USB 3.0 only) isn't the same as 12 x 1.5.
Personally, mine gets it's power from it's molecular density's proximity to our yellow sun. I've also named it Zod.

_motley said:
From what I understand, the USB connection won't provide enough current to charge the batteries sufficiently, so I would say no. This is the same on the iPad as well, no USB charge like is possible with the iPhone. The dock (shown on the Acer website) will at least allow another charging option, albeit probably not what you had in mind. Best thing to do is probably just get a power inverter for your car and plug it in.
Click to expand...
Click to collapse
I got this car adapter from Wal-Mart (it's a universal adapter - Powerline Model #90293). It's a 12V 2A adapter (originally bought it for a Viewsonic G Tablet...couldn't find a 1.5A version). It works well with the A500...the adapter plug sticks out a little bit, but it's not a big deal.

As long as the amperage is higher and the quality is as good or better, any DC adapter would work. It just needs to fit in the hole.

USB 3.0?
Would using a USB 3.0 port and cable make a difference since it carries a higher charge?

ssmug said:
Would using a USB 3.0 port and cable make a difference since it carries a higher charge?
Click to expand...
Click to collapse
No. It's simply not wired to charge the tablet. For the same reason you can't charge your laptop via the USB port.
Sent from my A500 using XDA Premium App

Ok since USB charging is out of the question I have another. People who have used the Xoom, is the Acer's charging port the same as the one on the Xoom? The Xoom has an official car charger, but just by looking I can't tell if they are the same size ends.
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You could probably head out to BestBuy or Staples etc.. and compare the 2. They should be side by side. Otherwise, I'm sure Acer (or some other 3rd party) will probably release a car charger that plugs into the proprietary port on the bottom?

From what I remember, the Motorola charging port is like a little thin nubbit. I think the plug on our Acer is larger. Check it out and post some pics.

My charger's head got broken into half just now ==! Hopefully can get the warranty.

Car charging whilst on GPS

I have used my new Nexus4 on the road with google navigation. I was surprised to find out that the 1Amp samsung charger I have used with my SGS2 was not able to maintain the charge of the phone. After couple of hours of driving my Nexus 4 died ( I didn't start with full battery)
What is your experience? I would expect the phone not only to work whilst on cable for the whole time, but also to eventually charge the phone fully.
Now I am not sure if it is my charger or nexus 4.
I had a look on mains charger and the output is 1.2Amp, is this the problem, that the car charger is not powerful enough?

I currently use CAD300UBE, which is the official i9300 car charger, with a rated output of 700mA.
When streaming over bluetooth using Spotify, and using Google Navigation I can say that this charger does charge the phone.
My old S2 charger, also genuine did not manage to charge my S3, hence the replacement.
Phil

My recollection is that Nexus devices are looking for pins 2 and 3 (data) of the charger to be shorted. If they are not, you'll only get 500ma from the supply.

Turn the screen of when not needed in navigation,

I use a kensington 2A flush cigarette lighter so it isn't an issue, the charger is <$15, and it makes life easier when I want to charge my ipad. Only thing I regret about the charger is that I didn't get the dual port version.

I posted this in the GN forum about a year ago when the same sort of problems were coming up there. You need a 2A charger and a data only cable to make you charge like you are on a wall charger. (Charging AC - Check this by going to Settings > Battery, the top shows charging AC.
bmolloy said:
There was another thread, I think in the General that discussed all of this, what people came up with was the best combination if you want a dual port usb charger is to make sure you have a "charging only" USB cable. This cable will not make your phone think it is connected to a computer. You can tweek a data/charging cable to work but some people messed that up so it is probably worth just spending the $4 on a cable that works.
Here is my combination that works great. With this set up I can have on my navigation going with the screen on the whole time and stream Pandora over Bluetooth into my car and the battery still charges really quickly.
Dual USB Port with a 1 amp port and a 2.1 amp port (2.1 amp port is for tablets or power hungry devices - like the phone while navigating). http://www.amazon.com/gp/product/B0056VNVV8/ref=oh_o01_s00_i01_details
Charging Only USB cable:
http://www.amazon.com/gp/product/B003VYBCAY/ref=oh_o00_s00_i00_details
This combo has me as "Charging AC" whenever I am in the car and I still have a port open to charge another one of the 27 or so different electronic devices that seem to clutter my life!
Click to expand...
Click to collapse
Here is what it should look like in the car if it is getting enough juice to run everything at once.
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kerman19 said:
I currently use CAD300UBE, which is the official i9300 car charger, with a rated output of 700mA.
When streaming over bluetooth using Spotify, and using Google Navigation I can say that this charger does charge the phone.
My old S2 charger, also genuine did not manage to charge my S3, hence the replacement.
Phil
Click to expand...
Click to collapse
I just checked my charger and it does say 700mA and also shows charging as AC. But in reality the charger was not able to charge the phone whilst on navigation.

Official HTC car charger charges my N4 effectively despite bluetooth + CoPilot/Google Navigation without issue.

CodeMonkey said:
Official HTC car charger charges my N4 effectively despite bluetooth + CoPilot/Google Navigation without issue.
Click to expand...
Click to collapse
Mine too, but I actually installed a dedicated 2 amp, isolated supply in my truck, shorted pins 2 and 3 on the USB connections on the board with a couple of beads of solder, and get full charging current on both my Nexus 4 and 7.
This is the supply I used:
http://daqstuff.com/400116_5volt_switching_power_supply.htm

Motorola Rapid Rate Charger charges the galaxy nexus perfectly while on navigation.
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA

I have now ordered thishttp://www.hotukdeals.com/deals/tom...ered-tomtom-rrp-19-99-2x-usb-1x-12v-8/1387378 I hope it does the job.
Sent from my Nexus 4 using xda app-developers app

This was always a problem even on my Gnex, so what i did is i bought a 2amp car charger, no more discharging while using... you can find them at bestbuy or futureshop if you're in Canada.
Sent from my Nexus 7

Slow charging? get a better cable(with proof)

Yesterday I just bought a new 8000mah power bank(ProMini 8000), which has 2.1A output but I still not very satisfy with the charge speed compare to the stock Note 2 lte charger.
So I did some experiments, found out charge speed have A LOT to do with the quality of cables! Going to share the result with you guys.
here are the tests
1. First is "Note 2 LTE stock charger + Note 2 LTE stock USB cable"
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1.8A, not bad!
2. "The new power bank(ProMini 8000) + The USB cable came with the package"
1A...meh
3. "ProMini 8000 + Note 2 LTE stock usb cable"
WOAH!! 1.5A, lower than the stock charger but really not that bad!
4. "Note 2 LTE stock charger +My old Galaxy Note 1 stock USB cable"
1A, So what material is the Note 2 USB cable made of? Uranium? Even Note 1 stock USB cable can't compete
5. "Note 2 LTE stock charger + some home depot generic micro-USB to USB cable"
0.6A Well, you get what you pay for..
Honestly, I didn't expect USB cable quality make this much of a difference.
I guess the Note 2 USB cable used some higher gauge wires?
Anyway I am going out to get some more Note 2 stock cable tomorrow, for the power bank and maybe other computers.

what app are you using to test the charging current?

DaBountyHunter said:
what app are you using to test the charging current?
Click to expand...
Click to collapse
This probably
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent
Sent from my GT-N7100 using Tapatalk 2

This app. Lies, I got an poor cable clone for Samsung 10.1 tab, and this app tells my note is charging at 1600mah, while it actually was charging at low power usb mode (measured using an multimeter).
Back on my original note 2 cable the app still show 1600 mah and my note was changing at full 1950mah measured on my multimeter.
Was easy to me coz I have an Short usb extension which I peel ti access the positive wire ( I cut it and connected my multimeter to both segment . in series scheme).
So it easy and accurate way to check if some cable actually charges at full current.
The app offered actually don't work accurately (if it's real purpose is it)
Sent From my Un-Rooted GT-N7100
---------- Post added at 06:58 PM ---------- Previous post was at 06:55 PM ----------
Final proof was my note 2 stop charging with fake cable and only drains about 300 mah and of course never charges, while this app still shows 1650-1680. The note actually don't charges.
Sent From my Un-Rooted GT-N7100
---------- Post added at 07:01 PM ---------- Previous post was at 06:58 PM ----------
Good emergency replacement Cable are the ones for HTC Sony and those charging cables that comes with power banks and which uses multiple interchangeable tips to match different connectors, my note 2 think it's an true usb Samsung cable.
Sent From my Un-Rooted GT-N7100

I just bought a Note 2 recently, T889 (T-mobile). I noticed it charges alright when plugged into my comp with the stock cable.
Now I use the stock AC adapter near my bed, but I attached a extended USB cable (10-15ft) and connected a USB to MicroUSB after that. I noticed charging my Note 2 that after 8 hours, it only charged from 60%-97%. Ridiculous. If I turn the screen on while plugged into that setup and not do anything heavy tasking to the phone, my battery would drain down even while charging.

Aria807 said:
I just bought a Note 2 recently, T889 (T-mobile). I noticed it charges alright when plugged into my comp with the stock cable.
Now I use the stock AC adapter near my bed, but I attached a extended USB cable (10-15ft) and connected a USB to MicroUSB after that. I noticed charging my Note 2 that after 8 hours, it only charged from 60%-97%. Ridiculous. If I turn the screen on while plugged into that setup and not do anything heavy tasking to the phone, my battery would drain down even while charging.
Click to expand...
Click to collapse
I'd guess this is normal. Basic facts : ÜSB is a 5V-powered bus, and a 1.1 port pumps out 500mA (to all the devices connected to a same root hub on the motherboard), and the USB3 norm raised this current to 900mA, not even half of what your wallcharger provides.
I seem to recall the USB2 spec. sheet only guarantees a 500mbits/s data throughput if the cable is 1.5m or smaller in lenghth, because of inline losses. and since a datastream is nothing more than waves of current pumped into a wire, the same applies to the current a USB lead provides : the longer the cable, the more current will be lost along the way, until there's nothing left to provide.. Low-voltage current is absolutely not transportable over long distances, that's the reason why we have hi-voltage lines all across our landscapes, and the reason why you see hi-to-lo-voltage converters at every streetcorner in the US and not in europe : european 240V current can be transported (once 'downvolted' from 20kV,5kV or 380V) over up to 100m without inline losses becoming too high, US 110V current barely over 20-25m... So a 5V-powered cable, well you do the math m8

It has nothing to do with the cable. It was a rom issue. I changed roms and have not had the same issue.
I went from same charge setup (while able to drain while plugged in and phone in use), switched roms and all of a sudden it is able to charge up even while in use.

Not trying to be a spoilsport, but this has already been extensively discussed here http://forum.xda-developers.com/showthread.php?t=2112811. So there isnt much use for this thread.
As for the OP, the cost/quality of the wire doesnt matter. What matters is that the wire should offer less resistance to the current, or in other words should be as short and thick as possible. Check page 6 of the link above. I brought a $5 generic cable and it has been working perfectly for me since...full charge in around 130-150 minutes.
The app simply copies information stored in sys/class/power_supply/battery/current_avg, and if the app is wrong then that means that your system is giving you wrong information.
Sent from my GT-N7100 or the Nexus 10, heaven knows.
Those who help noobs go to heaven. True story.

please link to ebay for good quality cable
cheaper the better.
and is it safe to use some chinese noname cables?

Charging Nexus 4 battery in India

I just got my Nexus 4 in India. I am looking for a solution other than plugging to computer USB port because it is slow and not flexible.
Is it possible to get a adapter for the nexus 4 "in the box" charger to use it with indian wall socket? If so please provide links. Will my samsung wave charger work? Do Indian nexus 4 users manage?
Thanks

mrcet007 said:
I just got my Nexus 4 in India. I am looking for a solution other than plugging to computer USB port because it is slow and not flexible.
Is it possible to get a adapter for the nexus 4 "in the box" charger to use it with indian wall socket? If so please provide links. Will my samsung wave charger work? Do Indian nexus 4 users manage?
Thanks
Click to expand...
Click to collapse
I am using Nexus 4 in India and I have been using it with my old nexus one charger as well as samsung chargers. Works just fine.
Alternatively, the converter for nexus 4 "in box" charger can be easily found in any decent electical goods store.

seventyfivein said:
I am using Nexus 4 in India and I have been using it with my old nexus one charger as well as samsung chargers. Works just fine.
Alternatively, the converter for nexus 4 "in box" charger can be easily found in any decent electical goods store.
Click to expand...
Click to collapse
Thanks.
But the power rating(volt and amp) for Nexus charger is different samsung galaxy charger. So wont that damage nexus 4 battery also nexus 4 battery is non replaceble? The converter you mentioned what is it called in general? So that i can convey it to the electical goods store person.
when did u order and recieve your phone in US? What is ur hardware version?
Do you have the below updated version?
http://www.gsmarena.com/updated_nexus_4_design_adds_nubs_around_the_rear_edge-news-5777.php

mrcet007 said:
Thanks.
But the power rating(volt and amp) for Nexus charger is different samsung galaxy charger. So wont that damage nexus 4 battery also nexus 4 battery is non replaceble? The converter you mentioned what is it called in general? So that i can convey it to the electical goods store person.
when did u order and recieve your phone in US? What is ur hardware version?
Do you have the below updated version?
http://www.gsmarena.com/updated_nexus_4_design_adds_nubs_around_the_rear_edge-news-5777.php
Click to expand...
Click to collapse
Volt stays the same, amp changes. It's a USB port charger, it'll always be 5V. You could plug in a 5V 2.1A (meant for tablets) charger into your Nexus 4 and it won't charge any higher than 1A or so. These sort of protections have been in phones for awhile now.
For directness sake, my Motorola Droid chargers (plus 1 car charger) worked with my Galaxy Nexus and Nexus 4. I am still using them in fact, along with the Samsung charger that came with the GN and the LG charger that came with the N4.
And what you're looking for is a plug type converter/adapter. Looks like
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There are many different types.

moe6 said:
Volt stays the same, amp changes. It's a USB port charger, it'll always be 5V. You could plug in a 5V 2.1A (meant for tablets) charger into your Nexus 4 and it won't charge any higher than 1A or so. These sort of protections have been in phones for awhile now.
For directness sake, my Motorola Droid chargers (plus 1 car charger) worked with my Galaxy Nexus and Nexus 4. I am still using them in fact, along with the Samsung charger that came with the GN and the LG charger that came with the N4.
And what you're looking for is a plug type converter/adapter. Looks like
There are many different types.
Click to expand...
Click to collapse
Thanks moe6!!
But going by the 1st picture i cant see how nexus for charger can be pluged to the back of this. Can you give some links from which i can buy this product?

HELP !!
GUYSS HELPP !!
Now the problem is , i used to always charge with USB thr LAPTOP and i think i mistakenly replaced my Nexus 4 USB ADAPTER with that of my friends cuz the pins in this one are round not flat . And Nexus 4 in box usb adapter has FLAT pins i guess .
So now How can i charge my battery? The Nexus 4 original usb adapter wont be available in india , and even if it would be it would be costly!!
So, Can i use any USB adapter , Wont my N4 have current rating issues? And even if i use any adapter would it be safe to use it for long term as N4 has non replacable battery?
Please guys give me Simple and Cheap ssolutions. Thanks a ton !!

trippinn said:
GUYSS HELPP !!
Now the problem is , i used to always charge with USB thr LAPTOP and i think i mistakenly replaced my Nexus 4 USB ADAPTER with that of my friends cuz the pins in this one are round not flat . And Nexus 4 in box usb adapter has FLAT pins i guess .
So now How can i charge my battery? The Nexus 4 original usb adapter wont be available in india , and even if it would be it would be costly!!
So, Can i use any USB adapter , Wont my N4 have current rating issues? And even if i use any adapter would it be safe to use it for long term as N4 has non replacable battery?
Please guys give me Simple and Cheap ssolutions. Thanks a ton !!
Click to expand...
Click to collapse
You can use any other adapter. The Nexus will only draw the amount of power it needs to charge so don't worry about it. It won't overcharge or anything.
Sent from my Nexus 4 using Tapatalk 2

mrcet007 said:
I am looking for a solution other than plugging to computer USB port because it is slow and not flexible.
Click to expand...
Click to collapse
Just a suggestion.. Try and use some application such as Fast charge from play store.. It will speed up your USB charging as if you were plugged into AC supply..

Can someone post pic of the factory LG USB cable?

I swear I am using the cable that came with the phone but fast charge isn't working.... Always says I'm charging in slow mode...
Looking specifically for a close up pic of the two ends of the cable so I can visually verify I have the right one...
Thanks!

Do you use the cable with the original LG Charger ?
The LG Charger is 1,8A output.
The commons chargers and USB on computers are 1A output.
SO if you plug in your cable to a computer or other charger, it's normal.

tstretch said:
I swear I am using the cable that came with the phone but fast charge isn't working.... Always says I'm charging in slow mode...
Looking specifically for a close up pic of the two ends of the cable so I can visually verify I have the right one...
Thanks!
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from the D802, but really just try another cable to the charger if it makes any difference.

Hmmm, that is definitely different than what I believe to be the cable that came with my G2. Not sure how to tell what version of us, but it's Verizon.
But yes I have tried many combinations of cables with the LG charger and none of them are fast charging. Using CurrentWidget and a couple other battery monitoring apps, I've also found that I get a much higher amperage draw from the charger that came with my galaxy s3. Anywhere from 200mA - 400mA, whereas I only get 50mA-150mA with the cable in this pic and the 1.8mA LG charger. But still all of then state that they are Slow Charging.
Can someone tell me if this is the stock LG USB cable?

Does it matter if we use the fat g2 USB vs regular one like above picture?
Sent from my LG-D802 using Tapatalk

stickmage said:
Does it matter if we use the fat g2 USB vs regular one like above picture?
Sent from my LG-D802 using Tapatalk
Click to expand...
Click to collapse
You would be surprised how many times an USB cable matters, and then again when it doesn't.
For example a chromecast USB cable which I accidentally got, did not charge my phone almost at all and not DATA connection was possible. But that was a clear error and I do not think that cable should be used with anything but with the Chromecast being nicely shielded and all.
ASUS in my country uses same cables as the one pictured above (Still does not mean that his is not original LG). But if you get a normal connection on the computer same goes for AC , USB charging in places where they should be, use whatever cables you want.
Stay away rather from too generic, skinny unbranded ones from chinese pages. (Even though from them I always buy iPhone cables . BUt who would pay 15 bucks instead of 1 and they served my wife well)
So far ASUS, HTC, Samsung , LG, and Nokia cables did there job mixing across my devices.

Verizon stock cable.
Sent from my VS980 4G using Tapatalk

Thank you JasonSF!!!
I apparently lost mine then.. Does anyone where you can buy a cable that supports the fast charge? Or even what spec to look for?
It doesn't seem like its a very exact science..

PAGOT said:
You would be surprised how many times an USB cable matters, and then again when it doesn't.
For example a chromecast USB cable which I accidentally got, did not charge my phone almost at all and not DATA connection was possible. But that was a clear error and I do not think that cable should be used with anything but with the Chromecast being nicely shielded and all.
Click to expand...
Click to collapse
Pagot - YEESS! I acutally used my Chromecast USB cable (which I'll be returned on Monday btw cause, well its just not that cool) ALL NIGHT LONG!!! I didn't think anything of it plugged it in and immediately walked away. Little did I realize, it was one of those cables that, 5 seconds after plugging in, reports that you should unplug it immediately to avoid damaging the phone!!!
I didn't see the message until the next morning and saw that my phone didn't get charged that night. And for about 2 days, I had VERY strange charging issues.. (see this post) I think they've gone away now, except that my fast charge isn't working.. But, back to the original purpose of this post, Im hoping that is USB cable related..
Anyway, it was the wierdest this, for about 2 days, certain chargers and USB cables that have always worked on this phone, didn't. The first day nothing but plugging into my computer would register any charge.. By that night most chargers worked but some wouldn't provide more than 50mA, and now, all of them seem to be working again..
SOOO, moral of the story is that in incorrect USB cable CAN damage your phone! At least temporarily.. Still doesn't make any sense to me how though.. Perhaps some protect feature kicked in and caused the symptoms I saw, but all I know is that my phone wouldn't charge anymore after using that Chromecast cable...

tstretch said:
Thank you JasonSF!!!
I apparently lost mine then.. Does anyone where you can buy a cable that supports the fast charge? Or even what spec to look for?
It doesn't seem like its a very exact science..
Click to expand...
Click to collapse
There is a thread in the G2 Accessories forum discussing compatible cables.
http://forum.xda-developers.com/showthread.php?t=2460881