Database Users

Impossible to charge sg2 in car

Hi all, just came 3 days ago from an htc hd2, and so far I am more than happy with it.
I have only one complaint and maybe you guys will help me sharing your experience : I can't charge this phone in my car while using gps.
It seems that the power adapter is not powerful enough to charge the phone screen on.
The car charger has a 5v 1000ma output, more than the regular wall charger provided by Samsung and it was working well before with my HD2 so I have no clue about this problem.
Did you experience that issue too, else can you share what car charger do you use?

try to buy new standard car charger with micro plug.. 13 eur and you will be saved..
Sent from my GT-I9100 using XDA App

Charger doesn't matter unless the phone is dropping into USB charging mode - phone limits to around 600-650 mA by default.
Custom kernels can bump this limit up for I9100 users. I777 users are screwed - we've got a crippled charger chip.

I had the same problem, I used the samsung one, useless, so I used my iPad charger, which is 2A, and charges the iPad quick, still useless. We drove from Bathurst NSW, down to Melbourne, about 10 hour drive, plugged in all the way using GPS, and about an hour from home, the connect to charger warning came on!! So once I stopped GPS, it started taking charge. Looks like when the phone is in use, it draws more then it takes charge, plus I read somewhere on here the phone is limited on the charge it takes, so using the 2A does nothing different then the stock 500mA charger.

I always had this problem with my Nexus One, although they are different phones, the problem is the same, uses more power then it can recharge in USB mode.
After trying 3 or 4 different charges I remember that I found one ultra-cheap 'made in taiwan' from a street seller that worked very well.... so it's kind of a lucky shot!
good luck!

Im using a genuine Samsung SGS2 charger and I can charge and run Sygic just fine. I started my journey with 80% and 40mins later I was up to 91% when I stopped and got out. (not in aeroplane mode..)

Very interesting feedbacks... So that confirm that is clearly not a matter of output amperage power.
It is now the same problem on the galaxy tab 10.1, for quickly charge this tab you need the Samsung compatible usb adapter.
It can be likely with a tab bringing a proprietary plug, but I didn't thought it will be the same with a Samsung phone bringing a regular micro usb plug. Quite frustrating and disappointing!
I will search around a micro plug car charger as suggested by redzion, but actually I don't clearly see the difference with my usb charger + a micro usb cable.

Double post, sorry.

If I use the usb cable from my cd player I have the same problem but if I use the official Samsung car charger Ithe only problem I have is the phone getting stupid hot
Sent from my GT-I9100 using xda premium

Oh Samsung, when you will understand?!

Samsung DOES follow the USB charging standard - it goes to its highest current setting when a charger that follows the standard is connected.
Note that iPad/iPhone chargers do NOT follow the standard - Samsungs will treat these as USB hosts and limit to 450 mA instead of 600-650.
Modified kernels can increase both of these values on I9100s.
The only thing Samsung really did **** up is counting screen/CPU current usage against the charge current limits - that's just stupid.

So the charger has smarts. On the i9000 factory chargers, the data pins were bridged. Bridging these pins manually on a USB cable when connecting to a USB source (such as a PC) enabled full current charging. You can see this in Settings -> About; it will say either USB or AC charging.
Do you think this is the case with the i9100?
I don't condone testing this theory on your i9100. Increasing the max current via custom ROM may be a safer solution.

I had the same problem. Two things fixed it for me:
1) I bought this charger: Sony Ericsson AN300 Micro USB 10€
2) I am using a custom kernel now

Any charger that is rated at 1000mA or more (per port) will do just fine. The problem is the cable - you need a quality microUSB cable, or it won't provide all the juice you need. I had the same issue, and I swapped three chargers until I found the real culprit.
Try with the charger you have now and the mUSB cable that was in the phone box - it should work well with that one.

I just press the power button to turn the screen off. when i need the sat nav i press the power and it still tracks you so there is no delay. With the screen off it does charge.

same problem

Duffman19 said:
I just press the power button to turn the screen off. when i need the sat nav i press the power and it still tracks you so there is no delay. With the screen off it does charge.
Click to expand...
Click to collapse
You are right, but even if it is better than nothing the charging time is still a big problem.
Yesterday I drove for at least 40mn phone off. Arrived to destination, I turn the device on: it charged only from 0 to 5%
I would like to test the mariusi theory concerning the Samsung micro usb cable, unfortunately on my SgsII box I just have a wall charger, no a microusb-usb cable.
Entropy512 said:
Samsung DOES follow the USB charging standard - it goes to its highest current setting when a charger that follows the standard is connected.
Click to expand...
Click to collapse
Is there a way to know before buying if the charger respect this charging standard?
I have some cheap usb chargers here and no one is a fast as the one provided by Samsung.
Entropy512 said:
The only thing Samsung really did **** up is counting screen/CPU current usage against the charge current limits - that's just stupid.
Click to expand...
Click to collapse
Maybe for safety purpose? Gps phones can become very hot behind the car glass.

Samsung are trying to "encourage" you to buy only their official accessories. To do this they've wired something differently in their chargers and cables. This "problem" exists on the Galaxy Tab too and can be solved with this adapter...
http://www.ebay.co.uk/itm/USB-car-w...ccessories&hash=item2c5c07736b#ht_3084wt_1163
It's cheap and turns a trickle charge into a full charge. I don't know the specifics of what they've done, but their USB charging just isn't the same as most others manufacturers.

Archer said:
It's cheap and turns a trickle charge into a full charge. I don't know the specifics of what they've done, but their USB charging just isn't the same as most others manufacturers.
Click to expand...
Click to collapse
Great find.

Pretty sure it just bridges the data pins.

Won´t charge unless it's off

Hi,
Is there anything I have to do for the GT 7.7 to charge while it's on? I´ve notice that it will only charge when it's off.
I've tested charging via usb and via outlet (2 different cables). I´m using the rom that came with it (as a matter of fact I haven't even rooted the tablet).
Any thoughts?

Which charger are you using? Seems you need to use a correct rated charger (ie the one that came with it) for it. Normal usb power hasn't got sufficient power.
You can trick it into using usb but you need an adapter from eBay
Sent from my HTC Desire S using Tapatalk 2

I´m using the charger that came with it. I've tried charging connected to my laptop and I've tried connected to the outlet (at least this last one should work).

rawfa said:
I´m using the charger that came with it. I've tried charging connected to my laptop and I've tried connected to the outlet (at least this last one should work).
Click to expand...
Click to collapse
Charging using usb port has not enough current (500mA only), unless your computer has a high current output usb port (1A - not many have).
The supplied charger is rated at 2A if I'm not mistaken, and take around 3 hrs to fully charge from empty, maybe more...

skycruzer said:
Charging using usb port has not enough current (500mA only), unless your computer has a high current output usb port (1A - not many have).
The supplied charger is rated at 2A if I'm not mistaken, and take around 3 hrs to fully charge from empty, maybe more...
Click to expand...
Click to collapse
It DOES charge, but only when it´s turned off.

It will charge when off if you are using the USB cable
If you are using the cable that plugs into a powerpoint then it'll charge when ever.

rawfa said:
It DOES charge, but only when it´s turned off.
Click to expand...
Click to collapse
Has Samsung Kies installed on that laptop your USB was plugging into?

Charge tab 2 via usb!!!

As we know that we can not charge tab 2 via usb when connected to pc.
But there is a way:
do not insert whole usb to port at once.slowly insert the usb(connected to tab) to port(of pc) upto its approx 1/2-3/4 portion.you will see charging symbol on tab battery icon.it may take some time to figure it out.but it works.....
Note:it works on p3100 for sure and may work other models.
ENJOY!do not forget to hit thanx button...

a video demo how to do this should help :cyclops:
it works! thanks for the tips

i charged my tab via my computer. although it has an x above the battery it still charges.

mad5870 said:
i charged my tab via my computer. although it has an x above the battery it still charges.
Click to expand...
Click to collapse
no buddy if tab shows a x on battery that means it is not charging and tab is connected in kies/media device mode.but he you follow above method tab will show charging on battery.

I charge mine, with my galaxy note charger
Sent from my GT-P3100 using xda app-developers app

I jus got my tab 2 but it charges through usb... no tricks needed... it's slow though
cheers
B

berre said:
I jus got my tab 2 but it charges through usb... no tricks needed... it's slow though
cheers
B
Click to expand...
Click to collapse
which model you have?

I swear mine charges through the usb hooked up in the usb ports in the back of my desktop. I'll check in the am when we get a blown transformer fixed and the power back on. It's 99 degrees and will be a long night. :banghead:
Sent from my HTC One X using xda premium

Mine charges even when it has a x on the battery......
Sent from my GT-P3113 using XDA Premium App

Even mine charges....I have GT P3113

Droidlover123 said:
which model you have?
Click to expand...
Click to collapse
P5100
cheers
B

I wanted to add a clarification: when plugged into USB the notification popup indicates "discharging". But in fact it is charging, because the % charge goes up (slowly) with time.
The trick mentioned in this thread may make the tablet show 'charging', but I doubt that it makes any difference to whether it is really charging or not. The charge rate is determined by the max amps of the charger. The supplied Samsung charger is rated approx 2A; if you use the USB from the iPhone charger it is approx 1A (if you have USB 3.0 ports, that is also about 1A); but USB 2.0 gives you only 0.5A.

As said...charging over USB is painfully slow (2,5-5W). I prefer to charge it with the original adapter (10W )

Chuckles960 said:
The charge rate is determined by the max amps of the charger. The supplied Samsung charger is rated approx 2A; if you use the USB from the iPhone charger it is approx 1A (if you have USB 3.0 ports, that is also about 1A); but USB 2.0 gives you only 0.5A.
Click to expand...
Click to collapse
The tablet or phone will sense if the connection to the charger is AC mode or USB mode, if AC mode is detected then the tab will pull up to ~2.1 depending on the available rate from the charger, if USB mode is detected than the tablet will only draw ~0.5A.
The way the charger is configured will let the device know if it is an AC mode charger or if it is an USB mode charger.
By shorting pins 2 and 3 together on some chargers/cable the device will detect AC mode and it will pull more current.
I have a 1A 12V car charger that was wired for USB, an android device will see it as USB and pull only 0.5A, but an Apple device will pull the rated 1A. I shorted pins 2 and 3 and now android devices pull up to 1A, I am not sure but I think it is no longer compatible with apple devices (I don't own one).

It will say that it's not charging when plugged in via USB, but if you have it plugged in, it will charge, slowly. It takes forever if you're anywhere close to having a dead battery, and if you have wifi and other stuff turned on, it will take even longer but it should work, no tricks needed.

Thanks! Works on the 3113. It's shows charging and doesn't show as media device on the laptop. Nice find.

Hi.
I have a couple of these usb adaptors, see link below, I bought them years ago for the original 7" galaxy tab but i never used them.
If i plug my tab2 into an usb2 port i get the red cross on the battery icon, so i tried one of these adaptor and my tab2 is charging from an usb2.0 port on my notebook and according to battery monitor widget pro at 14% an hour, and i have a lightning bolt sign in the green battery icon.
I did a search for the adaptor i bought and i think i have found it for £6.50 each, see link below.
http://www.mytrendyphone.co.uk/shop/samsung-p1000-galaxy-63928p.html
John.

the tablet charges anyway so the icon says no
In 4.0.4 rom the charge icon its fixed, anyway charge by USB is too, too slow, only use for emergency

Droidlover123 said:
no buddy if tab shows a x on battery that means it is not charging and tab is connected in kies/media device mode.but he you follow above method tab will show charging on battery.
Click to expand...
Click to collapse
not trying to be a smartass but i know when my tab goes from 5% to a 100% while plugged in to my computer its charging. and yes still had the x.
Sent from my SPH-D710 using xda app-developers app

Mine P 3100 international version even x on battery while usb connected but still its slowly charging this occurred aso to tab 1 and tab 10.1 SII and note

S4 will not charge with AC charger; only USB

Last night I was charging my S4 in my car adapter, but noticed the cattery was still going down. I went home and plugged it into my AC (wall charger) and went to bed. The next morning the S4 was dead and couldn't charge. The only solution was to plug it in my computer and went an hour for it to get some charge back.
I have a root i337m running rootbox 4.1, and I went into TWRP to wiped the phone and installed the ROM again - no luck.
Is this a battery issue, a software issue or a whole device issue? Thanks.

freddywhite said:
Last night I was charging my S4 in my car adapter, but noticed the cattery was still going down. I went home and plugged it into my PC and went to bed. The next morning the S4 was dead and couldn't charge. The only solution was to plug it in my computer and went an hour for it to get some charge back.
I have a root i337m running rootbox 4.1, and I went into TWRP to wiped the phone and installed the ROM again - no luck.
Is this a battery issue, a software issue or a whole device issue? Thanks.
Click to expand...
Click to collapse
I don't think its a rom issue. I tried charging via USB as well and had phone charging a few hours and it ate crap. So I only charge via AC outlet only. USB charges but at a very slow pace.

Reinaldo33897 said:
I don't think its a rom issue. I tried charging via USB as well and had phone charging a few hours and it ate crap. So I only charge via AC outlet only. USB charges but at a very slow pace.
Click to expand...
Click to collapse
I made an error in the OP - I meant to say I left it to charge on the wall and I got nothing.
Right now, the charge light doesn't even come on if I plug it with AC.

freddywhite said:
I made an error in the OP - I meant to say I left it to charge on the wall and I got nothing.
Right now, the charge light doesn't even come on if I plug it with AC.
Click to expand...
Click to collapse
Maybe see the results by changing the charger you're using?

r8revealed said:
Maybe see the results by changing the charger you're using?
Click to expand...
Click to collapse
I've tried 3-4 different chargers and cables, same issue. Charges slowly through PC,doesn't charge at all with AC. Did a factory reset after reverting to stock FW, no luck.

freddywhite said:
I've tried 3-4 different chargers and cables, same issue. Charges slowly through PC,doesn't charge at all with AC. Did a factory reset after reverting to stock FW, no luck.
Click to expand...
Click to collapse
I doubt it's a ROM issue, but there's no harm in reverting back to stock to see the results (assuming you've backed it up). If it all fails, i think you should unroot and send it to Samsung for the warranty. Software problems are somewhat easier to fix here than hardware, so it may be the best option to let Samsung handle it.

I had similar problems with my Note 2 before and now with my S4. What I found was, sometimes the usb cable wasn't tightly plugged into the wall charger. Once I've made sure of this, I've been able to charge (AC) every time.

I found this article that indicates that the S4 is looking for special sauce on the D+D- pins.
http://www.anandtech.com/show/6914/samsung-galaxy-s-4-review/2
Obviously the Galaxy S 4 will charge with any USB charger, but the charge time will simply be longer. Samsung uses a voltage divider and signals the presence of their own charger by sending 1.2-1.3 V across the D+ / D- pins, this is similar to what Apple does with 2.0 or 2.8 V across the pins for various USB chargers they've shipped over the years. This signaling is essentially Samsung's proprietary tablet charging signaling which they've employed on the Galaxy Note 2 and now SGS4, in fact the two use the same exact charger, so it's worth tossing out your old ones and getting the appropriate one to take advantage of the faster charging.
However I do not believe this to be 100% true. I think not all chargers will work..
I took a charger that is very vanilla (Wall charger but the D+D- pins are NC) and it works with the S3 and NEXUS7 but does not work with the S4.
This charger uses a stock USB cable so I took a wall charger that had gone bad but had a dedicated cable and hacked off the end and wired up my own cable...
That works! So it appears that the S4 will only charge properly with certain chargers that do something to the D+D- pins (either shorting them with a resistor like the article indicates
I then took a look at the cable I used to replace. It is a Motorola cable and it has the ID pin pulled high built into the cable... So I suspect that is required for the phone to work... But to fast charge it will need the special sauce indicated above!

Had the same issue and found the solutions which worked for me. Go into the developer mode and deactivate the usb debug mode.

Had the exact same issue. I took a soldering iron to my charging port on my phone. Problem solved. The ID pin had a bad joint.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

I have a strange issue, my s4 is detected by pc, charges normally with usb ( wall or pc charge ) my battery is full but when I take the cable from microUSB port and s4 should work with the battery, turns off and consumes no battery, it's like refusing to use the battery and that it is full! battery checked on a sph l 720
I've tried installing other roms with safestrap but I still have the same problem, refuses to consume battery and while the battery is at 100% ,my s4 shows 0% if I disconnect the usb cable... game over. However, I can be on the safestrap menu for hours only with the battery, no problem, is a problem of rom I think but did not know how to fix it .. : (

I'm having the same issue as the original poster. The USB port is good, charges fine when connected to PC (although much slower because of different mVS). Have tried amidst everything and nothing fixes it. I've turned debugging mode off and back on, restore to backup, complete wipe and reinstall of 2 ROMs with and without apps, fix permissions, different kernels, different USB cables... The adaptor is in good condition. But when plugged in while on my phone doesn't recognize that's it's connected. Previously out would give a false charging reading. If off sometimes I got the grey bar battery but note is just vibrating every few seconds. Idk what to do...

crazy_dr0id said:
I'm having the same issue as the original poster. The USB port is good, charges fine when connected to PC (although much slower because of different mVS). Have tried amidst everything and nothing fixes it. I've turned debugging mode off and back on, restore to backup, complete wipe and reinstall of 2 ROMs with and without apps, fix permissions, different kernels, different USB cables... The adaptor is in good condition. But when plugged in while on my phone doesn't recognize that's it's connected. Previously out would give a false charging reading. If off sometimes I got the grey bar battery but note is just vibrating every few seconds. Idk what to do...
Click to expand...
Click to collapse
I'd guess it's the charger. Get a new one
Sent from my Nexus 5 using XDA Free mobile app

I had the same problem. S4 will recognize charger as USB charger, not AC. solution was to clean usb port connector, was some cloth covering wires. then restarted and worked ok

I am having trouble charging the phone the same way. I have reset the phone 3 times and still can't get a charge.

[Q] Galaxy S5 Charging Time

I've just got a new Galaxy S5 and I really love it. I'm currently anxious of its charging time. The moment I've booted the phone for the first time it showed around 51-52% battery. I've plugged the USB 2.0 (sad to see a USB 2.0 instead of USB 3.0 in box) and started charging through my laptop and at the same time imported contacts. Email is on Sync (15 min), wifi on, its been about 4 hours since the usb cable plugged in and is charging but still at 92%. Is it normal for the first time.
The problem I have is that the Wall outlet came with the phone isn't compatible with what I have at home and will make the adjustments tomorrow for that. So, I didn't tested it directly with its charger plugged.

Yeah mate. Charging seems too slow, while using USB cable plug-in with my laptop..
But with regular charger it's okay..

Laptop charging always takes too much time, that's not unusual.
Sent from my HTC One_M8 using Tapatalk

Use the usb on usb wall charger or use micro usb data cable or use nokia usb ca-101 data cable it fast charge the mobile fastly
Sorry for my bad english
Sent from my milkyway 5000 using xda premium

Thanks a lot guys, I thought if there is some problem with my phone.

Mine one does from 10% to 100% in around 1.30 hrs with wall charger and with USB on computer takes around 2 hrs to 2.30. Stock...
If my post helped you, please press THANKS BUTTON, It feeds my mind...