[Galaxy S III Q&A, Help & Troubleshooting] Guru1000:
As a lot of people I don't want to run out of juice and ordered a couple of "Genuine Samsung" batteries on ebay (one for myself and one for a friend). Paid 6.50 pounds each that is approximately 10 dollar. I received the items accordingly and unpacked them. As a technician I checked them intensively on al sides also in comparison with my original battery. Off course, I knew this sounded to good to be true, but the sellers feedback was good and no feedback reported fake goods.

First thing I noticed was that the serial number on both batteries was the same, this can never be the case with a serial number

Second thing is that the contact are lying deeper in the battery housing than the original one

Third thing is a small placard next to the contact points to cover two small holes of the assembly.

Than I started searching on the internet and found the following text which I qoute:

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We particularly focus on the Battery to discuss, because it is difficult to identify real and fake battery. looking from the appearance of many fake Samsung batteries, it almost can not distinguish the fake from the real, however , the fake will not become the real, teach you a few methods of identification, real and fake battery will be crystal-clear to present in your eyes .

Method 1: Check the new battery whether there is a film on the back

when you buy assembled battery, there is a normal film affixed to the back, however the original battery did not have. it is the easiest way of identification.

Method 2: Check the battery positive labels work

the label of the original battery is pasted precisely and its size matches with the size of the grooves, there is no obvious gap; the work of the assembled battery(Cell phone accessories wholesale) is usually less stringent , the size of the label is inconsistent with the battery grooves, giving the impression that the label is not affixed rightly.

Method 3: Check the litter bin symbol on the label

there is a small dot in the circle of right corner of the original battery‘s litter bin, but if you observe carefully, you can pick it out; there is a solid round dot in the bottom of right corner of the assembled battery’s litter bin, it is said that a small number of positive labels of assembled battery also have a small dot , but you'll also find that the patterns of assembled battery’s litter bin slightly larger than the original battery. This point may require you to spend more time on observation, if you do not have experience, you can pretend to select several types of Samsung cell phones, then take the opportunity to make a comparison between them, you can see which one is real and which one is fake.

Method 4: Check print quality of the letter under the bar code on the label

printing font of the original battery is rather special, scan lines are constituted by the dot, they are clear and grainy, the "/" between “S “and “N “slash is very obvious and serrated (sorry picture is not clear); Print quality of the assembled battery is obviously much more rough.

Method 5: Check the battery's internal parameters

Enter your cell phones "* # 0228 #", the original battery generally can display manufacturer, capacity, voltage, temperature and other information. Press the "^" button on the navigation keyboard to page up, the percentage displaying in the bottom of the page is the remaining capacity. The assembled battery does not display electric battery manufacturer, capacity.

Method 6: Check the battery contacts

Samsung original battery(Cell phones wholesale) metal contacts are bright and neat; assembled battery contacts are jet-black and the arrangement is irregular. If you observe closely you may find the differences between their contacts, but it is difficult to make a judgement if there is no comparison. it seems that it is really a bit difficult.

Usually one original battery will take you more than 100 yuan, while assembled battery can be purchased for about ten yuan, a huge difference may let many people fond of bargain, when you purchase cell phones, you can use the aforementioned ways to distinguish carefully,let the thing be worthy of the money.

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I hope it is clear for everybody. Cheers .