For safety reasons, batteries are usually not fully charged when shipped out. Please fully charge the battery as soon as you receive it before use. Battery operation precautions: prohibit touching the aluminum foil packaging material with sharp objects, prohibit bending the top sealing edge, prohibit opening or destroying the folded edge, prohibit bending the fragile pole lugs, prohibit falling impact bending the battery, prohibit short-circuiting or reversing the positive and negative poles of the battery use at any time. Other matters: to prevent short circuit in the battery package, it is strictly prohibited to disassemble the battery, it is strictly prohibited to put the battery into the fire, it is strictly prohibited to immerse the battery into the liquid (such as: water, drinks, juice, coffee), shall not replace the battery by itself, it is prohibited to use the battery has been damaged. All products in this store are real power for the actual standard, the specific use of how long, depending on the machine power consumption. ~We can guarantee that the batteries sent out are new, but polymer lithium batteries are more prone to scratches, which does not affect their use.