First, the length of standby time

Battery standby time is a measurement of the battery length ,it's similar with laptop battery such as ASUS UX50V Battery and  iPhone Batteries. Battery standby time is the length of the monomer form of rechargeable batteries battery balanced decision.

The true battery standby time should be basically the same as the logo and instructions. The fake identity only half the time. Some battery used poor cell battery for the core, coupled with new packaging assembly.

Second, the battery capacity

The general capacity of mobile phone battery is 1000 mA / h or 1000mah. Some did not leave the battery capacity of identification, a logo is also illegible. Can also get mobile phone to repair shop to measure the current to distinguish authenticity.
Now we are using lithium batteries, lithium batteries by sections 5 and the 7th battery strings together, coupled with switchgear and protection circuit formed. So it has some weight. If you buy the lithium batteries are too light, the battery cell capacity shortage, the battery may be a problem. General 900mah lithium-ion battery cell weight of 35g,  if the battery cells plused other equipment  ,the weight of the battery  less than 35g, then this battery is probably false.

Third, security

Mobile phone battery is inflammable and explosive materials, if there is no protection circuit inside the battery ,it easily get deformation, leakage, or explosion. However, many low-quality batteries aimed low prices to attract consumers, removing the piece of circuit protection board, in order to earn greater profits. The battery on the market that has a lot of insecurity, people from the appearance of hard to discern.

The appearance of discrimination

Authentic appearance of mobile phone batteries generally have the following features: battery labels using second printing technology, as notebook battery(Apple A1189 Battery or Acer Aspire 3820T Battery)in a certain light, from the slope of view, part of the color bar was darker than others, and feels with hand, a little more Convex than other parts , many of the original battery has such characteristics. Genuine battery labels at the surface of white light with a metal object program, similar to pencils across the traces. Battery casing is made of special material, very strong, difficult to damage, under normal circumstances is not easy to open the battery cover, battery and tidy appearance, no extra burr, the outer surface has some roughness and feel comfortable, feel smooth inner surface, light Can see the fine vertical scratches.

By color

Under normal circumstances, the appearance of genuine mobile phone battery color and the appearance of color is identical. Therefore, we can just choose to install the battery to the phone to see if the color is the same between them, if their appearance between the color, the color has a significant difference, the battery most likely is fake and shoddy products.

Package distinguish method

Each piece of superior quality cell phone batteries, looks neat and clean from the outside , the color texture is very clear, no scratches the surface casing and damage the Department; and posted on the label the battery cover, should include the type, model, capacity , Positive and negative signs, standard voltage, battery manufacturers name and other parameters. In addition, the metal contacts on the battery, it should be no scratches, should not have green or black moldy phenomenon. If you choose to cell phone batteries, and genuine mobile phone batteries described above, the appearance of the phenomenon is not the same, then you can buy basically confirmed the current battery is fake.
Know distinguish authenticity, whether mobile phone battery or apple accessories can use it.