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[Q] USB Charging

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By moz2k12, Member on 12th March 2014, 05:03 PM
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Hi

I have the Tab Pro 8.4 since yesterday.
Today i noticed that charging over USB is not working. I get a red cross in the Battery Symbol.

Anybody with the same Problem?
 
 
12th March 2014, 06:16 PM |#2  
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Hello.

If you mean charging by other charger than original, it's normal.
All Samsung Tab need original charger or compatible charger (mean mentioned "for Galaxy Tab").
13th March 2014, 09:40 AM |#3  
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Quote:
Originally Posted by Samsara69

Hello.

If you mean charging by other charger than original, it's normal.
All Samsung Tab need original charger or compatible charger (mean mentioned "for Galaxy Tab").

no I mean charging on the USB Port with a normal Micro USB Cable. I have one here from a Galaxy S2 or S3 and with them it doesn't work.
13th March 2014, 10:17 AM |#4  
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It requires 2amps to charge while the screen is on. The other chargers are probably only providing 1amp so while screen is on it is not charging.
13th March 2014, 10:22 AM |#5  
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Quote:
Originally Posted by phage80

It requires 2amps to charge while the screen is on. The other chargers are probably only providing 1amp so while screen is on it is not charging.

once again, i dont use the charger, it is connected to the USB Port from my Computer!!!! Normaly a Device like the Nexus 7 is charging wenn connected over USB, the Tab Pro 8.4 not.
13th March 2014, 01:05 PM |#6  
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Then it is the same issue.

A computers USB ports only output 500ma for usb 2.0 devices unless the machine has a piece of software designed to tell it to send more over the port.
It is still not the 2 amps required to charge the device while the screen is on, it should still slowly charge with the screen off.

The nexus 7 probably has a lower power draw allowing it to charge at 500ma with the screen on.
13th March 2014, 06:25 PM |#7  
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Quote:
Originally Posted by moz2k12

no I mean charging on the USB Port with a normal Micro USB Cable. I have one here from a Galaxy S2 or S3 and with them it doesn't work.

It's what i mean.
You cannot use another charger or computer USB port than original or compatible for recharge Galaxy Tab.
It's not a question of intensity ,Galaxy Tab wait for signal on +-DATA pin .
Original charger has 2 resistors between +-DATA for be recognized by Galaxy Tab.
You can use a special USB dongle for recharge at any USB port http://dx.com/p/usb-charging-adapter...b-black-151322
14th March 2014, 09:12 AM |#8  
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Quote:
Originally Posted by Samsara69

It's what i mean.
You cannot use another charger or computer USB port than original or compatible for recharge Galaxy Tab.
It's not a question of intensity ,Galaxy Tab wait for signal on +-DATA pin .
Original charger has 2 resistors between +-DATA for be recognized by Galaxy Tab.
You can use a special USB dongle for recharge at any USB port http://dx.com/p/usb-charging-adapter...b-black-151322

That su...., never seen this on other brands!
14th March 2014, 09:20 AM |#9  
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Same for iPad and somes Asus Transformer.
14th March 2014, 03:20 PM |#10  
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I found right now that it is charging also when there is the red cross in the battery symbol
14th March 2014, 07:32 PM |#11  
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Quote:
Originally Posted by moz2k12

I found right now that it is charging also when there is the red cross in the battery symbol

Are you sure?
If you switch off the Galaxy Tab, it charge under computer USB,otherwise not.
Here the user manual
http://downloadcenter.samsung.com/co...ual_NAC_F2.pdf
Page 7
Quote:
Originally Posted by Samsung

Note: You cannot charge the battery using the USB cable and
your PC

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