Samsung Galaxy tab 8.9 car charger recommendations?

0okami

Senior Member
Oct 12, 2005
191
9
0
USA
Hi everyone
I'm looking for a car charger that would actually charge my 8.9 tab.

I have hooked up my tab to various USB sockets and im still getting the red X on the battery. I even tried a 2.1a socket. No luck. This is going back to amazon unfortunately.

XTG (Does not charge my tab)
"Ultra Compact High Output Dual USB Car Charger - 2.1A Output Ideal for Charging iPad, iPad 2, Galaxy, iPhone, HTC, Droid, GPS, and Other Tablets, Smart Phones and USB Powered Devices"
http://www.amazon.com/gp/product/B00470C35E/ref=oh_o03_s00_i00_details DOES NOT WORK for me.



(actually, i might keep it for my HTC evo. I like how its blade fused)



samsung galaxy tab 8.9 and XTG 2.1a car charger showing device is not receiving charge from the 2.1a usb charging port. XTG at fault?





samsung galaxy tab 8.9 and XTG 2.1a car charger on ac to dc bench test inverter. The XTG fails to charge while device is powered on. It will only charge when off. Even a standard USB port can do that.





Samsung galaxy tab 8.9 on wall charger showing proper charge receiving from wall charger.




So if anyone can recommend something that does work, please do let me know. Im trying to find something low profile instead of having to use a DC-> AC -> wall socket -> usb in the jeep. >_<
 
Last edited:

0okami

Senior Member
Oct 12, 2005
191
9
0
USA
Here's UPDATE in case someone has the same issue with charging the 8.9 tab via usb.
With these steps followed, I was able to get USB charging from any usb socket. Not just wall.


I rooted my Galaxy 8.9 following these instructions:
http://forum.xda-developers.com/showthread.php?t=1287205

And then, I flashed this rom:
http://forum.xda-developers.com/showthread.php?t=1359068

After that, I flashed this Kernel:
http://forum.xda-developers.com/showthread.php?t=1323957

And then, I enabled USB charging as described in here:
http://forum.xda-developers.com/showthread.php?t=1323957

And DONE. Now its charging from USB.
It charges slow but that's expected. If i want to charge faster, I use the wall socket.
 
Last edited:

Myster_X

Member
Jan 5, 2012
10
0
0
You were very close to getting it correct with your first post. That car charger you have is plenty powerful at 2.1a (I'd actually recommend getting one that does both 1a & 2a to charge either a phone or tablet in the car). My understanding of the Galaxy Tab is that they won't charge correctly over USB. By default, they just behave as mass storage devices. If you want to get your Galaxy Tab to charge over USB, you'll need a special USB adapter that connects inline with your existing charging cable. This little gem was designed for the earlier generation of Galaxy Tab, but the charging issue is the same.

USB Data/Charging Extension Cable for Samsung P1000 - Black (found at DealExtreme dot com)

Or, you could buy this nifty external battery, which includes the required inline charging cable.

New Trent IMP99D (found at NewTrent dot com)

Obviously, you were able to get it to work by rooting, etc. But for those who may be interested in a vanilla solution, this may help. Also, sorry for not posting links, but I'm a noob poster, and the rules don't allow me. You should be able to find the products I mentioned above pretty easily though.

-me