The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Previous page Next page 1 How to Install 2 Product overview 3 Safe Driving Built-in Backup Battery The product has a built-in 230mah small battery, which is used to open the clamp arm and take out the mobile phone after the car is turned off. Cant charge? 1. Make sure your cell phone support Qi wireless charging; 2. Please check whether the power supply is normal, and if the connection port of the cable and car charger loose. How to achieve fast charging? 1. According to the size of your mobile phone, adjust the bottom tray of the stand to the corresponding size position, the more accurate the adjustment, the faster the charging; 2. Must use >18W QC3.