[Q] USB Charging with Pc/Mac

[zerocool76]

I'm having an issue,and seems not just me,that I can't charge the Tab via usb connected on a laptop or a Mac book (pro).
I'm wondering if its firmware related, I've tried JID and JI6 same issue.
Are you guys having the same?
If someone is not having this problem can please be so nice to tell me the firmware version?

Thanks

 

[chowdarygm]

no, you cannot charge the tab from a PC usb slot cause of some minimum power requirements which was the same way with ipad

 

[zerocool76]

no, you cannot charge the tab from a PC usb slot cause of some minimum power requirements which was the same way with ipad

No is not the same than ipad, ipad is possible to recharge with new macs (that what apple says on the web site, the don't say how new though). But is true the iPad has 2A battery versus the Galaxy Tab that has 4000mAh, I was hoping that there was a way to recharge it (slowly but at least to keep it alive when is connect)

 

[chowdarygm]

No is not the same than ipad, ipad is possible to recharge with new macs (that what apple says on the web site, the don't say how new though). But is true the iPad has 2A battery versus the Galaxy Tab that has 4000mAh, I was hoping that there was a way to recharge it (slowly but at least to keep it alive when is connect)

no idea on that. i didn't keep my tab connected so long to pc but whenever i connect it to pc it shows on battery with cross mark on charging symbol. may be will test it this weekend

 

[hipath]

charging

hi guys,
mine is also showing the non-charging-sign but it charges slowly - get juice plotter and try it your self

 

[Portos61]

Can I recharge the Tab in the car sigarette ligther socket with USB adapter?

 

[zerocool76]

Can I recharge the Tab in the car sigarette ligther socket with USB adapter?

check this out, they have the adaptor for cigarette...

http://www.thinkgalaxytab.com/universal.html

I found the link above on google, but I've seen other around the web.So I think you can

 

[dickenz]

hi guys,
mine is also showing the non-charging-sign but it charges slowly - get juice plotter and try it your self

Mine is the same guys... I left my AC charger at work over the weekend and have been charging it via USB the whole time... Slow but it gets there if you leave it on over night!

 

[TheGrammarFreak]

Mine won't charge unless I use the power adapter from Samsung

 

[eskasi]

Mine does charge but slowly from USB.... you should also know that different PC boards and laptops have different power outputs.... in most cases, your tab should charge very slowly on USB power. Mine charges and has BT and Wifi on also... but with heavy use and plugged in to my laptop, it may offset and drain ever so slightly....

Same thing goes for car chargers... if not rated for higher output, it will charge VERY slowly. The original Samsung car charger has a much higher power output. If you can find one that has the same aftermarket USB car adaptor for Ipad charging, that should work too

 

[daniel.weck]

The original Samsung car charger has a much higher power output.

Indeed (yet it is very compact and doesn't get hot).

Related discussion here:

http://forum.xda-developers.com/showthread.php?p=9172163#post9172163

 

[brucewilsonpa]

I tried my iPad charger - output rating looks to be the same - but it didn't work very well.

 

[ekinnee]

I tried my iPad charger - output rating looks to be the same - but it didn't work very well.

The contacts on mine are upside down compared to an iPad/iPod/iPhone charger. The blade on which the contacts sit is also higher in the charger slot than an iPad charger. How did you get it to fit without breaking something?

 

[Picea]

Some PC:s (motherboards) have so weak power output via USB, that they just barely provide a mouse and a keyboard but nothing more.
So anyone should not expect it to be enough for charging Tab.
Tab's own power supply gives 2 Amps out!

My experience about car-usb-adapters: one can charge Tab, other quite similar for some reason not. However, both charge Galxy S fine.

 

[pdiddypdiddypdiddy]

Just something to keep in mind as an option... Usb 3.0 will give more juice to usb cables than current usb ports. Apple has "cheated" and already increased the power to the regular usb ports on their newer laptops on par/better with usb 3.. So... If you get usb 3 cards installed you'll have a port with enough amps to charge the tab. Easier/cheaper to just buy a pdmi cable but if you are about to upgrade to usb 3 its more incentive to do so.

Sent from my SCH-I800 using XDA App

 

[essahar]

Regarding the ipad charging you can use the below link to to download an ASUS program that will boost the USB power for Windows this works for the ipad and it's showing as charging when connected to my PC this may also work for galaxy tab

http dlcdnet.asus.com/pub/ASUS/misc/utils/AiCharger_V10006_XpVistaWin7.zip

 

[clovis_ll]

Charging using usb on my mbp does take a long time. I timed it and it took at least 6 hours to charge from completely empty to full. Its ok since I plug it in when I'm about to go asleep and by the time I'm up its fully charged.

 

[Croak]

Regarding the ipad charging you can use the below link to to download an ASUS program that will boost the USB power for Windows this works for the ipad and it's showing as charging when connected to my PC this may also work for galaxy tab

http dlcdnet.asus.com/pub/ASUS/misc/utils/AiCharger_V10006_XpVistaWin7.zip

Careful with that.

Seems it has the not-uncommon tendency to screw up USB drivers to the point that mice and keyboards won't work either, especially on Win7 and Vista X64 machines. It got me, had to do a system restore to fix it. Neat idea though.

 

[Technomancer]

Apple has "cheated" and already increased the power to the regular usb ports on their newer laptops on par/better with usb 3.

USB port should give at least 500mA. But anything more is OK. So Apple can make their USB ports to give anything over 500mA and it is well within the standard. Actually it is good for everyone because if Apple port can give 2A you can use non powered hubs and have power for lots of USB devices.

 

[Starganderfish]

Actually the Tab charges fine (albeit slowly) from a USB, you just have to be aware of a few things. Firstly as mentioned above some USB ports provide more power than others. Try the different ports on your machine and you'll soon figure out which ones work best. Secondly, while the Tab will display the "Connect your charger" message, it is actually charging. Go into Settings, About Phone, Status and watch the battery level. It'll take a while but will creep up. Finally, it charges faster when the Tab is switched off. ie: if you're actually using it, you won't get a charge, if you have it in standby with screen off, it'll charge slowly (takes most of a day for a full charge) and if the Tab is switched off, it'll go a lot faster (though still not as fast as with the power adapter.)
This is good to know as you can plug it in to your computer and let it set on your desk at work all day and know that it is slowly trickle charging.
I also found that plugging the USB cable into an Apple adapter (from an iPhone) brought up the same "Connect your charger" message, but did charge the Tab, faster than a USb but not as well as my samsung plug.