1.It is strictly prohibited to contact the metal parts of the product with coins or other conductive articles to avoid a short circuit; 2.The product must be placed beyond the reach of a child or pets; 3.Products can not be placed or used in a high temperature and humid environment ;This product can’t be used in the environment with temperature more than 40°C. Suggest the best working environment is 25 °C. 4.Do not place the product in fire, water or other too high temperature (> 45°C) and too low temperature (below-20°C) enviroment. 5. Product charge / discharge power consumption, so there will be a slight heating phenomenon, it is a normal phenomenon; Once charging/discharging temperature over 50℃, pls stop use it. 6.Do not expose power Bank to heat or fire. Avoid storage in direct sunlight. . 7. Do not store the power bank with oxidizing, acidic substances. 8.Do not storage Power Bank haphazardly in a box or drawer where they may short-circuit each other. 9.Please do not disassemble, repair or modify this product by yourself. We will not be responsible for any damage or other serious consequences caused by this. Please understand.