11-06-2012 07:22 PM
Naturally the manual warns us that the S3 battery may blow up if we use a non-Samsung charger but I have a few USB chargers going around the house. Surely they all run the same standards and thus any USB charger would be ok?
12-06-2012 02:05 PM - edited 12-06-2012 02:07 PM
Thanks for your post. I’ve just got to pop on here and let you know that while down at Samsung a few weeks ago, the head of the device development made a point of mentioning that other adaptors would cause issues on the Samsung Galaxy S3, due to the different voltages used.
He did mention that it would never fully charge and would take a considerable amount of time longer to charge than the actual S3 charger. Just for your information
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12-06-2012 04:55 PM
Was he refering to the plug or the USB cable? What if you plugged the USB cable into your laptop's USB socket and then the other bit into the S3? Where is the different voltages there? Is that a risk also?
12-06-2012 08:12 PM
That souds like samsing saying there charger is differant
Well i use my Galaxy S charger now that has all the tecnical info on this
But the new one has not other then a V8 sticker how they got these through customs i don't no unless there a standard USB adapter Now there is a standard that Samsung has to comply with
and also on
Now its the phone that controls as and when it charges, We had this with the Galaxy s it stops and 100% and then the phone starts to work, when you unplug it shoots down to 94%
All the adapter does its to reduce the Voltage down to the EU standard fo micro USB
13-06-2012 10:27 AM - edited 13-06-2012 10:28 AM
Htc desire charger =5.0v 1.0A
Galaxy S GT-I9000 Charger - Output = 5.0V - 0.7A
Galaxy S3 GT-I9300 Charger - Output = 5.0V - 1.0A
Average USB port - Output = 5.0V - 0.5A (Range 4.7V - 5.25V)
13-06-2012 10:58 AM - edited 13-06-2012 10:59 AM
Beat me to it dec. My current HTC Legend USB Charger plug is 5.0v and 1A.
So, I get the plug voltage/amp differences being an issue. That's fine. But I don't get why the USB cables would be much different? It's a USB standard surely?
13-06-2012 11:16 AM
13-06-2012 11:30 PM
Not researched this but AFAIK usb is supposed to be limited to 0.5 A - I think the actual usb cable supplied with the SAmsung (or HTC desire) charger may have something different about the pinout which enables the phone to know its ok to draw more than 0.5A.
Not tried it but I strongly suspect that if you try a standard micro usb cable with the galaxy s3 it will only charge at 0.5 amp and hence will take twice as long.
Similarly a lot of car chargers only supply 0.5A the htc car charger gives 0.5A which is whats needed if you plan to use GPS in the car for extended periods.
21-06-2012 05:02 PM
I charge my phone plugged into my pc at work,which only seems once in a blue moon.Would the effect of not charging the batteries to 100% every time not prolong the over all life of the battery? my Samsung laptop has a battery saving feature where it only charges to 80%