What to Do If an Electric Vehicle Gets Waterlogged?

1. Forcibly using the vehicle may burn out the motor controller or the motor, so the user can leave the electric vehicle parked for a few days.

   
   

2. If the waterlogging of the electric vehicle is not severe, you can leave it parked for a few days and expose it to the sun to dry, or disassemble the motor and dry it thoroughly with a hair dryer. Note: Forcibly using the vehicle in this state may still burn out the motor controller or the motor.

3. If the electric vehicle is severely waterlogged or has been soaked in water for a long time, it is recommended to take it to a professional repair shop for inspection and maintenance after it has dried completely before using it again.

How to Inflate a Flat Tubeless Tire on an Electric Vehicle  

1. **Use Motor Inertia**: Prop up the electric vehicle with its main stand. Turn on the ignition key, twist the throttle to the maximum to make the motor run at high speed. Once the speed builds up, squeeze the brake suddenly. Repeat this process several times. Now try inflating the tire again—this may make it easier to inflate.  

2. **Seal the Gaps**: Take a few plastic bags and seal all the gaps between the tire edge and the wheel hub to prevent air from leaking out of these gaps during inflation. Then use an air pump to inflate the tire; it will inflate quickly. After the tire is inflated, remove the plastic bags and add a little more air to top it up.  

3. **Elevate the Tire and Tap It**: Prop up the vehicle so that the front tire is suspended. Once suspended, use a hammer or a board to tap the tire, reducing the gap between the tire and the wheel rim. Then proceed to inflate the tire.  

4. **Remove the Valve Core**: If none of the above methods work, the gap between the tire and the wheel hub may be too large, or there may be other issues. In this case, you can remove the valve core, then use an air pump to inflate the tire— the tire will slowly inflate. After it inflates, stop, reinstall the valve core, and then add more air to the tire to reach the proper pressure.  

5. **Use Lubricant**: You can spray a small amount of lubricant on both sides of the tire. Then try inflating it again; this may make inflation easier.   It should be noted that if a tubeless tire is flat for a long time, it may cause the tire and wheel hub to stick together or result in other damages. Before inflating, it is best to check the condition of the tire and wheel hub first to ensure safety.

  The number of charge-discharge cycles of lithium-ion batteries can generally reach about 500-1000 times; some high-quality lithium-ion batteries can even achieve 1000-1200 charge-discharge cycles, with a service life typically ranging from 3 to 5 years. Currently, mainstream electric vehicles adopt lithium-ion batteries (such as ternary lithium batteries and lithium iron phosphate batteries). Compared with traditional lead-acid batteries, they have higher energy density (200-300 Wh/kg), longer lifespan (1000-2000 charge-discharge cycles), and lighter weight (only 1/3 of that of lead-acid batteries).

  The number of charge-discharge cycles of lead-acid batteries is usually around 300-500 times. Specifically, low-grade lead-acid batteries have about 300-400 charge-discharge cycles and a service life of approximately 1.5 years; mid-grade graphene lead-acid batteries have around 500-600 charge-discharge cycles and a service life of 2-3 years; high-grade lead-acid batteries have about 1000 charge-discharge cycles, and it is feasible for them to be used for 3-4 years.

• Usage Environment: Lithium-ion batteries have more stable performance and are less affected by temperature. They can work normally within a relatively wide temperature range, and their charge-discharge efficiency and lifespan remain relatively stable in both high and low temperature environments.Lead-acid batteries, however, are prone to electrolyte evaporation and loss in high-temperature environments, which shortens their lifespan. In low-temperature environments, the rate of chemical reactions in lead-acid batteries slows down, resulting in reduced charge-discharge efficiency and a significant decrease in driving range. Long-term use in low-temperature environments will accelerate the aging of lead-acid batteries.
• Usage Habits: To maintain optimal performance, lithium-ion batteries need to be recharged after the power is exhausted. When not in use for a long time, they should be fully charged every two months.For lead-acid batteries, over-discharging and over-charging should be avoided. It is advisable to start charging when the remaining power is about 20%-30%, and the charging time should not exceed 8 hours.

The charging time of an electric bicycle depends on several factors, including battery capacity, charger power, battery type (lead-acid/lithium-ion), and remaining battery level. The theoretical analysis is as follows:

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