1. The charging time for the first lithium-ion battery charging is due to the fact that the battery of the electric vehicle has not undergone charging and discharging before leaving the factory. It is necessary to ensure the normal operation of the battery. In general, the charging time should be around 5-6 hours, allowing the battery to fully charge, and later use can be slightly longer.

　　2. After the first charging, although it may not be considered the first time, the second time is also considered a new car charging. At this time, you can make the battery car almost run out of electricity and then perform a long-term charging, which can last for 8-9 or even 10 hours, in order to allow the battery car to undergo a complete cycle of chemical reactions.

　　3. When charging lithium-ion batteries for electric vehicles for the first time, the charger may generate heat quickly and high. Therefore, especially during summer charging, the charger should not be placed on objects that are prone to heat and combustion, and it is best not to place it on the seat of the battery car to prevent ignition.

　　4. Before the first lithium-ion battery charging, the electric vehicle needs to run out of electricity, but it cannot run out. When an electric car is newly purchased, its battery level will not be too full, but it will also not be too low, unless it is an old or inferior battery. When using it, everyone should estimate the approximate distance it can run based on the merchant's estimate, in order to avoid running out of electricity or running out of electricity. When the battery level display of the electric vehicle has reached the last grid, it is important to consider not cycling and prepare to charge.

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