1. Children under ten years old are not supposed to extend hands into fans to avoid being injured. 2.Lithium ion battery with memory function. You can charge it any time you want to prolong its service life. 3. When not in use, a. please fully charge the battery; b.take out the battery and keep it in a dry&cool place after sealing it in a plastic bag. Otherwise, the battery might be unable to be charged. 4. While the fan is spinning, please do not extend anything into fan to prevent the latter from being broken. 5. The battery cannot work in an environment above 60℃, cannot be extruded or disassembled, which might shorten the battery's service life or cause leakage or explosion. 6. For a better effect, please only use accessories offered by our company.