1. 18w fast charge and 3.0 flash charge are good charging technologies.
2. 18w fast charge means that the charging power is 18 watts and the device can be quickly charged.
Flash charge 3.0 refers to the charging technology standard as QC3.0, which has higher charging efficiency and faster charging speed. 3. If your device supports QC3.0 technology, then 3.0 flash charge is better because it can provide faster charging speed. But if your device does not support QC3.0 technology, then 18w fast charge is also a good choice, it can provide relatively fast charging speed. 4. In addition, it is also necessary to consider the brand and quality of the charger, and whether the charging interface of the device matches. Taking the above factors into consideration, it is most important to choose the charging technology suitable for your equipment and needs.