I have mini USB fan, how can I charge this?

Mini USB fans are small, portable and easy to use, making them a cool assistant for people in many scenarios. Whether it is on a crowded commute, in a stuffy office, or in outdoor camping, it can bring a touch of coolness to people. However, many users hope to make the battery life of mini USB fans longer. Here are some effective methods for you.

1. Charging.
Avoid overcharging and discharging: Most modern mini USB fans use lithium batteries, and should be charged when the power reaches between 20% and 80%. Over-discharging will drain the battery and may cause battery damage; and not unplugging the charger for a long time after full charging may also affect the battery life.
Use the original charger: The output power and other parameters are matched with the fan battery. Non-original chargers may output unstable voltages, and too high or too low voltages may cause the battery to overheat or undercharge, affecting battery performance and life.
Control charging time: When using a mini USB fan for the first time, it is recommended to charge it for at least 4 hours, but there is no need to overcharge. Subsequent charging is generally performed when the battery is low. The charging time depends on the battery capacity and the power of the charger. Unplug the charger in time after it is fully charged.
Choose a suitable charging environment: Choose a dry and ventilated place when charging. Avoid charging on soft surfaces such as pillows and sofas to prevent poor heat dissipation of the device, which may cause excessive temperature and damage to the battery.

2. Usage.
Control the use temperature: Lithium batteries are very sensitive to temperature. High temperature will accelerate battery aging, and low temperature will reduce battery performance. The ideal operating temperature is between 20°C and 25°C, so avoid long-term exposure to high temperatures outdoors or excessive use in cold environments.
Turn off unnecessary functions: If the mini USB fan has some additional functions, such as lights, try to turn them off when not in use to reduce power consumption and reduce the burden on the battery.
Avoid frequent charging: Although lithium batteries have no memory effect, frequent short-term charging and short-discharging will still affect the battery cycle life. Try to charge when the battery is low.
Use the device regularly: Even if you don't use the mini USB fan often, it is recommended to use and charge it every once in a while to prevent the battery from self-discharging for a long time and entering a dormant state, which will reduce the battery capacity.

3. Maintenance.
Keep it clean: Clean the charging port frequently. Dust may corrode the charging port and other devices, affecting the charging effect and battery life. In addition, the fan casing and blades should be cleaned regularly.
Proper storage: When the mini USB fan is not in use, place it in a dry, cool place, away from moisture and direct sunlight. If it is not used for a long time, it is best to charge the battery to about 50% before taking it out for storage.