Precautions when using lithium batteries:

　　1. The outer packaging is aluminum-plastic composite film. The outer packaging box of polymer lithium battery 18650 3.7v is aluminum-plastic composite film, which is easily scratched by sharp parts such as needles, nails, and nickel electrodes. Therefore, it is prohibited to use all sharp and thin hardware parts. Contact with the outer packaging film. Manufacturers of polymer lithium batteries believe that it is best to wear rubber gloves or cut off long nails during operation to clear the operating table and prevent the presence of sharp parts. The heat-sealed rechargeable battery is close to the side of a certain temperature, so the following matters must be paid attention to in actual operation: the pressure side is already in the process of charging the battery, and the pressure side must not be opened or damaged according to the sealing test.

　　2. When using lithium battery 18650 3.7v cells, they are easily damaged on one side of the top component.

　　3. The impact toughness of the rechargeable battery electrode lug is not very strong, so it is very important to pay attention to the primary lug. (Note: Tensile strength of aluminum/nickel metal.)

　　4. It is forbidden to use lithium-ion core safely. It is forbidden to drop, hit or bend the core (including the bottom of the core). It is forbidden to short-circuit the core at any time to seriously damage the core.

　　2. Lithium polymer batteries should be stored within the appropriate voltage and temperature range specified in product specifications.

　　3. Issues that should be paid attention to in the design of lithium polymer battery casing

　　1. When designing the shell, the shell should have sufficient mechanical strength to ensure that the core is not subject to mechanical impact.

　　2. When designing the protection circuit board, the overcharge limit voltage should be less than the over-discharge limit voltage, and the protection circuit module should have a short-circuit protection function.

　　4. Things to note when assembling lithium polymer batteries using cores and shells

　　1. Lithium polymer battery is connected through the battery: Lithium-ion packaging devices recommend using ultrasonic welding or spot welding technology to connect the core with the protection circuit module or other components. For example, when using manual tin soldering, the battery family believes that the things that need to be paid attention to include ensuring the function of the core, the temperature of the soldering iron can be controlled and anti-static, the temperature of the soldering iron cannot exceed 350C; the tin soldering time cannot exceed 3 seconds; the tin soldering time No more than 2 times; secondary welding must be performed after the edge sealing is cooled; direct welding on the edge sealing is prohibited (note: the distance between the solder point position and the aurora position). A height above 60c will reduce the sealing resistance, resulting in charging , instant heating of lithium batteries and damage to lithium-ion cores.

　　2. During the installation of the lithium-ion battery, the lithium-ion battery cannot be activated in the casing.

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