vivoy5s supports 18w fast charge vivo Y5s is a mobile phone product released by vivo in November 2019. Battery type: non-removable battery; Battery capacity: 5000 mah; Battery charging: wired charging; Charging specification: 18W dual engine flash charge. The 18W dual-engine flash charge uses the 9V\/2A specification, which effectively reduces the heat generated during charging while providing fast charging, and also brings a better charging experience.