Please read the instruction manual carefully after received the package, this will help you to use the product effectively. If you want to return our battery back, please pay attention to the following points to avoid short circuit caused by improper operation : 1. If the battery has a switch, be sure to turn off the power switch. Please keep the positive and negative poles of the battery insulated just like the battery you received. Please use foam or other materials to fix the battery to avoid the battery shake in the carton. Important notice for recycling of used batteries As a professional battery distributor, we strictly abide by local laws and regulations to ensure battery quality, transportation and storage safety, environmental protection. According to the battery regulation, batteries must not be disposed of with household ordinary waste. Consumers are obliged to dispose of the used batteries to the professional recycling agency for proper disposal. They must not be arbitrarily throw into the trash. Please protect the environment! It is not allowed to plagiarize without permission or we keep the right to pursue legal responsibility.