Precautions Please confirm the battery type and quantity of your device before purchasing. We will deliver the goods in accordance with the model and quantity you choose. Please keep them in a dry and cool place. Please avoid short circuit operation to avoid high temperature. Do not handle in fire or high temperature. Do not pierce, damage or disassemble. Do not mix new batteries with old batteries. Do not use inferior chargers to charge the battery to avoid damage to the battery. If you don't use it for a long time, please charge it fully before storing.