Look at this sign
The logo printed on the real battery board is very clear, while the counterfeit products are copied and printed, and the handwriting is blurred. The "positive and negative" polarity symbols of the real battery panel are directly made on the metal contacts, and the fake ones are made on the plastic case, and some of them have no "positive and negative" symbols at all.
Look at this craft
The real battery panel adopts ultrasonic welding, and the front and rear covers are inseparable without obvious cracks. Fake panels are mostly hand-made, glued together, and will break in half with a little force.
Look at the safety performance
In order to protect the battery and the mobile phone, the normal mobile phone battery panel is equipped with a temperature control switch. If the charging time is too long, the voltage is too high, the temperature rises sharply, and the battery panel heats up, the power supply will be cut off in time to prevent the battery from leaking or exploding. Fake and shoddy battery panels do not have this device, but are welded with an electric soldering iron, and even a small battery dedicated to non-rechargeable cameras is connected in series, while fake lithium batteries, if forcibly charged, may cause an explosion.