The LiFePO4 battery has the advantages of high working voltage, large energy density, long cycle life, good safety performance, small self-discharge rate, and no memory effect.

18650 is the originator of lithium-ion batteries a standard lithium-ion battery model set by Japan's Sony Corporation in order to save costs, where 18 represents a diameter of 18mm, 65 represents a length of 65mm, and 0 represents a cylindrical battery.

Precautions for charging lithium batteries: 1. When charging the lithium battery, it is best to choose the original special charger, otherwise it will affect or damage the polymer lithium battery. 2. When charging lithium batteries, it is best to use slow charging. Avoid fast charging as much as possible. Repeated charging and discharging will also affect the life of lithium batteries.

The internal resistance of a battery refers to the resistance to the current flowing through the battery during operation. It includes ohmic internal resistance and polarization internal resistance. Polarization internal resistance includes electrochemical polarization internal resistance and concentration polarization internal resistance.

How to pack lithium batteries? 1. Make sure that lithium batteries are individually packaged in completely closed inner packaging, such as blister packaging or cardboard to ensure that each battery can be protected; 2. Cover and protect the lithium battery, so as to avoid short circuit or contact with any conductive material in the package, which may cause short circuit; ......