Yes, there are some differences between an iPad and an iPhone. First, the iPad fast charge typically has a higher power output because of the iPad's larger battery capacity.
Second, the iPad fast charge may use different charging protocols to adapt to the charging needs of the iPad. In addition, the iPad Fast charge may have a faster charging speed in order to fill the iPad's battery faster. However, it is important to note that not all iPad fast charges will work with the iPhone, as the iPhone's charging needs and charging protocols may be different. Therefore, when choosing a charger, it is best to choose a fast charger that is suitable for a specific device to ensure the best charging effect and safety.